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“Invent a New India Using Knowledge”

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“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 4864 to 4870 (1968): Shell Flanges for Vessels andEquipment [MED 17: Chemical Engineering Plants and RelatedEquipment]

IS : 4864-1968 to

IS : 4870 - 1968 ( Reaffirmed 1991 )

Indian Standard

SPECIFICATION FOR SHELL FLANGES FOR VESSELS AND EQUIPMENT

( Sixth Reprint MAY 1993 )

UDC 621.643’412’6 : 66’026

0 Copyrfght 1969

BUREAU OF INDIAN STANDARDS MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARC3

NEW DELHI 110002

Cr 9 October 1969

IS:4s64- 1968

IS : 487t’. 1968

Indian Standard SPECIFICATIONS FOR SHELL FLANGES

FOR VESSELS AND EQUIPMENT

Chemical Engineering Sectional Committee, EDC 57

Chainnan

DR 0. P. KHARBANDA

Members

Rafiesritircg Larsen & Toubro Ltd, Bombay

SHRI D. L. PPMHAN ( Alternab to Dr 0. P. Kharbanda )

DR J. D. ADHIA Hindustan Organic Chemicals Ltd, Bombay

DR ASQHAR HIJSAIN Regional Research Laboratory ( CSIR ), Hyderabad SHRI K. SIMSACHARYULU ( Altrmate )

SHRI J. M. AYAN DUTT Indian Institute of Chemical Engineers, Calcutta DR D. C. TAPA~AR ( Alturtufe)

SHRI H. N. BANERJP.A Associated Cement Companies Ltd, Bombay DR V. C. TIWCAR ( Altcmatc )

SHRI N. N. BANERJEG Gansons Private Ltd, Bombay DR R. KRISWNASWAMY ( Altanatc )

SHRX S. D. BHASIN Imperial Chemical Industries ( India ) Private Ltd, Calcutta

SHRI P. K. BHAT?ACHARYA ( Alternate ) SHRX P. K. CHAKRAVARTY Directorate General of Supplies & Disposals,

New Delhi

DR %. S. C~~RI Central Design & Engineering Unit ( CSIR ), New Delhi

SHRI G. Corm Lloyd’s Register of Shipping, Bombay ‘SHRI A. KILPATRICK ( Alternate )

SHRI FRANCIS RAYMOND CRUZ Chemida ( India ), Bombay SHRI S. H. RASTE ( Ahnate )

Snm C. R. DASGIJPTA Indian Oil Corporation Ltd ( Refineries Division ), New Delhi

SHRI K. C. JAXN ( Altarnate ) SHRI S. C. DASGUPTA Directorate General of Ordnance Factories, Calcutta

SHR~ C. S. GOIJRI(IBANKNLAN ( Alt4md4)

SHRI R. S. GROVER The Ralph M. Parsons Co of Asia, Bombay SHRI P. V. S. NAYBOOTHIRIPM

( Alternak )

(tJWnnd4npolr40)

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADWR SHAH ZAFAR MARC3

NEW DELHI llooO2

ls:4864-1968

ls t 460 - 1968

Indian Standard SPECIFICATIONS FOR SHELL FLANGES

FOR VESSELS AND EQUIPMENT

0. FOREWORD

0.1 These seven Indian Standard Specifications for Shell Flanges for Vessels and Equipment were adopted by the Indian Standards Institution on 3 September 1968, after the drafts finalized by the Chemical Engineering Sectional Committee had been approved by the Mechanical Engineering Division Council.

0.2 Shell flanges are differentiated from flanges in pipes in that the former are not subject to bending and other stresses due to piping connections to which later are subject. Flange connections between shell sections and between the shell and the head are in gezleral practice in industry as bolted flange means are the easiest means of assembling and dismantling vessels and equipment.

0.3 This group of Indian Standard specifications for shell flanges for vessels and equipment comprises the following:

IS : 4864- 1968 General requirements

IS ;. 4865-1968 Welded’shell flanges for non-pressure service

IS : 4866-1968 Welded shell flanges for carbon steel pressure vessels and equipment

IS : 4867-1968 Welding neck shell flanges for carbon steel pressure vessels and equipment

IS : 4868-1968 Welded shell flanges for stainless steel pressure vessels and equipment

IS : 4869-1968 Welded shell flanges with hub for stainless steel pressure vessels and equipment

IS : 4870-1968 Flat gaskets for shell flanges

0.4 In the preparation of these standards assistance has been derived from the following standards:

DIN 28030 : 1967 Flanchverbind ungen f.r Behalter und Apparate ( Shell flanges for vessels and equipment )

2

IS:4864-xl68

ls : 487~- 1968

DIN 28031 : 1967 Schweissflansche fii drucklose Behilter und Apparate aus unlegierten und nichtrostenden Stihlen ( Welded shell flanges for vessels and equipment of carbon and stainless steel not subject to pressure )

DIV 28032 : 1967 Schweissflansche fib- Druckbehiilter und Apparate aus unlegiertcn Stihlen ( Welded flanges for pressure vessels and equipment in carbon steels )

DIN 28034 : 1967 Vorscheweissflansche f%r Druckbehiilter und Apparate ,( Welding neck flange for pressure vessels and apparatus )

DIN 28036 : 1967 Schweissflansche fib Druckbehiilter und Apparate aus nichtrostenden Stiihlen ( Welded flanges for stainless steel pressure vessels and apparatus )

DIN 28038 : 1967 Schweissflansche mit zylindrischem Ansatz tir Druckbehalter und Apparate aus nichtrostenden Stiihlen ( Welded flanges with hub for stainless steel pressure vessels and equipment )

DIN 28040 : 1967 Flachdichtungen fib Apparate flanschverbindun- gen ( Flat gaskets for shell flanges )

issued by the Deutscher Nom-enausschuss.

0.5 For the purpose of deciding whether a particular requirement of these standards is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in these standards.

*Rules for rod’ .g off numerical values ( mid ).

3

Y$:4S64-1968

Indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT : GENERAL REQUIREMENTS

1. SCOPE

1.1 This standard covers general requirements for shell flanges for vessels and equipment, and fully and clearly defines them by providing information supplementary to that given in the other standards in this series.

2. DEFINlTKONS

2.0 For the purpose of this standard, the following definitions shall apply.

2.1 Maximum Working Pressure-The maximum gauge pressure at the coincident metal temperature that is permitted for the vessel in operation.

2.2 Maximum Working Temperature-The maximum working temperature of the contents of the vessel at the maximum pressure specified.

2.3 Stress Relief Heat Treatment - Uniform heating of the part to a sufficient temperature, below the critical range, to relieve the major, portion of the residual stresses, followed by uniform cooling.

3. FASTENERS

3.1 The, bolts and nuts shall comply with the requirements specified in Table 1 regarding the specifications to which they should conform and the finish required.

3.1 .l Material - Carbon steel with a guaranteed yield point of not less than 24 kgf/mm” at room temperature is quite adequate for fastener sizes up to M30 and ma&mm working temperatures up to 300°C. The C35 grade steel is quite suitable as material for the studs conforming to IS : 1862~1967*.

When service conditions require it, other materials may also be U)CCI subject to agreement between the user and the manufacturer.

4. FLANGE

4.1 Fl8nge Selection - Flanges conforming to IS : 4865-1968 of this standard are suitable for non-pressure service for temperatures up to 209~~. Welded shell flanges conforming to IS : 4ML1%8 and IS : 4868_1= (ut

l specification for stud3 (Jr51 rcuikl ).

4

for moderate service conditions of temperature and pressure. Welded neck flanges conforming to IS : 4867-1968 are to be preferred for more severe working conditions. Welded flanges conforming to IS : 4868-1968 and IS : 4869-l 968 could replace the welded neck flanges. However, for temperatures above 2OO”C, the temperature differential across the flange has to be taken into account. It is recommended ‘that the material chosen for the flange should have a coefficient of thermal aptursion as near as possible to that of the material of the shell.

TABLE1 REQUIREMENT FOR FAWl’ENUlS

(C&u.re 3.1)

BOLT MATBIUAL NUT IUmmu.

Applicable Specification

Property Class Accordin to

Apppcable

IS : 1367~1!67+ Spc!&a&a~”

Property Cl- Accordin to

and Grade IS : 1367-l $6 7. or to or to

Designation According to

Designation

IS : 1762-1961t According to

IS : 1762-1961t

IS : 1363-1967$

IS : 1364-19670

Grade P

IS: 1862_196jl~

Grade P

4.6

4.6

6.6

c 35

IS : 1363-1967:

1s : 1364-1967j

Grade S

IS : 1862-196711

Grade S

4.6

4.6

St 50

i .i g$@ IS: 1862-196711 c 35 IS : 1862-196711 St 50

a “‘~~~~ GradeP C Y5

Alloy steel Yizqia

*Technical supply conditions for threaded fastenen (JFrst rmisia ).

t&de for designation of steel.

SSpccification for black hexagon bolta, nuts and lock nutr ( dia 6 to 39 mm) and black hexagon acrews ( dia 6 to 24 mm ) (jir~t retion ).

$Specification for precision’ and semi-precision bolts, screws, nuta and lock nuta ( dia 6 to 39 mm ) (firzt rcvtin ).

(ISpecification for studs (first r&ion ) .

ISt$861-1968

4.2 Material - The material of the flange shall be material conforming to the requirements of Table 2 or material equivalent or superior to this material at the temperature considered.

TABLE 2 MATERIALS OF CONSTRUCTION OF FLANGES

FLANGE SPECIFICATION

“Welded flange to IS : 4865-1968

_) Welded flange to IS : 4866 1968

Welding neck yages to IS : 4867-

Welded Ranges to IS : 4868-1968 and IS : 4869-1968

MATERIAL SPECIFICATION , .a \

From 0” to 300°C From 300” to 4O@C

IS : 2062-1962+

IS : 2062-1962+ Grade 2 of IS : 1875-1966$ Grades 1 and 2A of Grade 2A of IS : 2002-1962t IS: 2002-1962t or Steel to designation Grade 1 of IS: 1875-19663 Cl5Mn75 of IS : 1570-1961)

IS : 2062-1962’ Grades 1 and 2A of IS : 2002-19627 Grade 1 of IS : 1875-1966:

IS : 2062-1962* Grades 1 and 2A of IS : 2002-1962j Stainless steels to designation 04Cr 19Ni9Ti20

04Cr 19Ni9Niz

07Crl9Ni9MzTi28 or

05Cr19Nil lMe3TFO of

IS: 1570-19615 - Grade I of IS: 1875-1966t

*Specification for structural steel ( fusion welding quality ). ( Since revised ).

tSpecification for steel plates for boilers.

SSpecification for carbon steel billeta, blooms and slabs for forgings ( rmirrd ).

OScbedules for wrought steels for general engineering purposes.

4.3 Method of Manufacture - The flanges shall be of the ring or welding neck type and may be cut from plate, formed from bar, forged or fabricated by welding.

43.1 When the flanges are .fabricated from sheet or plate material, strips are to be cut in the direction of rolling and bent. However, in the case of flanges for non-pressure vessels, the flange may be cut in the circular form directly from the sheet.

6

lS:4864-1968

4.3.2 Heat Treatment-When the flange material has been hot forged or rolled in an unsuitable temperature range it shall be stress relieved. If the vessel thickness and composition require the welded joint between the flange and the shell to be heat-treated, it shall be carried out in accordance with the requirements of IS : 28254 969”.

4.4 Dimensions - The dimensions of the flanges, the grooving dimensions, the number and size of the bolts shall be in accordance with the require- ments of the applicable standard in this series.

The dimensions which have been specified indS : 2825 -1964 are based on the series of nominal diameters included in IS : 2844-1964t.

4.5 Supply - The flanges eonforming to IS : 4866- 1968, IS : 4867- 1968, IS: 4868-1368 and IS : 4869-1968 may be supplied in any one of the following conditions:

a) A Unmachined,

b) B Machined, and

c) C Machined and drilled

and with full gasket area with no raised or recessed portion ( W ) or with any of the following forms of grooving:

a) Male and female ( M/F ) or

b) Tongue and groove ( T/G )

43.1 If these flanges are ordered in the unmachined condition A, the machining allowance provided is adequate for the types W, G and F, whereas in the case of M and T types an extra thickness of 6 mm is to be provided over the required flange ring thickness, In the latter case, it should be specified in the order. If the operating pressure is much less than the maximum allowable working pressure specified, additional machining allowance need not be provided.

4.5.2 When flanges are supplied in the machined condition C, in the case of welded flanges the sealing surfaces shall be worked only after completion of the welding, whereas in the case ofwelding neck flanges the sealing sur- faces could be even worked before welding.

5. GASKETS

5.1 Requirement of maintaining tightness in the assembled condition in the vessel and also when the vessel is under service require that the mean dia- meter of the gasket ring as well as the gasket w&&h is as small as possible.

*Code for unfired pressure vessels .

tRec.ommmdation on nominal diameten for procar quipment.

7

Taking the above factors into consideration, the dimensions of the gaskets have been so specified in IS : 4870-1968 that for a given inner dia- meter of the flange and for a given size of the bolt, the dimensions of the gaskets are given.

5.2 The type of the gasket and the design of the sealing surface shall be in accordance with the requirements of Table 3.

TABLE 3 REQUIREMENTS OF GASKETS

FLANCES FINISH OF THE GASK.PT ~NFORMINO SEALlNC SURFACE

TO ( see IS : 3073-19G7’ )

IS : 4865-1968 Smooth, # or V Flat gasket ring FB conforming to IS: 4870-1968 or the full gasket over the entire gasket area

IS: 4866-1968 IS : 4867-1968 IS : 4868-1968 IS : 4869-1968

Smooth, # Vt

or

Male & female VV Tongue & groove VV

Flat gasket ring FB conforming to IS : 4870- 1968

Flat gasket FS type conforming to IS : 4870-1969

oAsusament of surface roughness. tin case of metal jacketed gaskets, the surface finish required is VV.

5.3 The gasket material and type shall be such that the gasket during assembling is not crushed and the strength level under service conditions is adequate. Compressed asbestos fibre jointing, metal and metal jacketed gaskets are normally adequate. If the service conditions are not severe soft gaskets like rubber and asbestos gaskets may be used.

6. USE OF MATERIALS

6.1 Other materials which are equivalent in performance under the condi- tions of service to those specified in this standard should be used subject to agreement between the purchaser and the supplier.

ISr4w5-1968

Indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT: WELDED SHELL FLANGES FOR NON-PRESSURE SERVICE

1. SCOPE

1.1 This standard specifies the requirements for welded shell flanges for carbon steel and stainless steel vessels and equipment not subject to pressure.

2. DIMENSIONS

2.1 The dimensions for welded shell flanges, the diameter and number of bolts, vessel thickness and weight shall be as given in Table 1.

3. MATERIAL

3.1 Flange - The material of the shell flanges shall conform to the require- ments specified in IS : 4864-1968.

3.2 Bolts and-Nuts - The bol:s and nuts shall conform to the requirements specified in IS : 4864-1968.

3.3 Gaskets -With these flanges, gaskets of type FB conforming to the requirements specified in IS : 4870-1968 shall be used.

4. DESIGNATION

4.1 Welded flange shall be designated by the machining condition in which supplied, nominal diameter, thickness ( h ) and number of this standard.

Example:

A welded flange supplied in machining condition B, having a nominal diameter 1 000 mm and thickness h = 20 mm shall be designated as:

Welded Flange B 1 000 x 20 IS : 4865-1968

9

_. c

I.

E . . TABLE I DIMENSIONS FOR WELDED SHELL FLANGES t

( Chusc 2.1 )

AIi dimensions in mil:imetres.

TYPE A FOR CAReON STEEL SHELL

TYPE B FOR STAINLESS STEEL SHELL

l 3.5

ENLARGED GETAIL AT X

--IsI- ENLARGED DETAIL AT Y

TABLE 1 - Contd ,-

BOLT

-

- I NOMINAL

DIAMETER

FLANOE VESSEL THICKNESIJ st, Min

WEIGHT OF

A SINOLE FLANOE

kg APPROX

h Tbrrad Nominal

Dia Number 4 4 da 4

Appro~

415 375 460 420 510 470

345

z

550 600 7co

510

2:

430 530 630

600

1%

760

:z

730 830 930

1 100 1200 1 320

!% 1 270

1 030 1 130 1 240

1420 1 370 1340 1 520 1 470 1440 1620 1 570 1540

1 720 1670 1 820 1 770 1 920 1 870

FE 1840

2 020 2 120 2 220

1970 2 070 2 170

1940

2’E

Carbon Stainlesr Steel Steel

4

t ;:; 9.7

4

4”

10.6 11.5 14.8

: E.3 4 21.6

: 5

23.8

z.4

Zi.4 53.8

5 6

57-2 60.6 75-5

f 6

ii.9 b: 87.4

”

324 326 368 370 419 421

459 510 602

762 802 902

1002 1 102 1 202

1 303 1 403 1 503

1603 1 703 1 803

1903 2003 2 103

M 16 M 16 M 16

M 16 M 16 M 16

M 16 M 16 M 16

M 16 M 1.6 M 16

M 16 M 16 M 16

M 16 M 16 M 20

M 20

E z:

z 900

Ez 1200

(; E)

(1 500)

(ig)

(ZY (2 100)

NOTE - Siza shown in parcnthw are of second preference. , tr is normal thickna of shell. If higher or dmJl~r thicknan k de&d, it: shall be mentioned in the order.

( Con&izuf) c i

TABLE 1 DlMENSIONS FOR WELDED SHELL FLANGES - Cod

All dimensions in millimctres.

NOMINAL 1

DIAbETBR

d, h

2 200 ‘; gj’

; 2 203 ~ 2 303 j

:8 2 403 30

2600 ’ 2 800

2603 30

;5 3 000 2 803 3 003 ::

:: I 3603 40

3 800 3 803 4OQO 4003 ::

FLANGE

da 4 4pprox

2 320 2 270 2 243 2 420 2 370 2 340 2 520 2 475 2 445

2 720 2 675 2 645 2 920 2 875 2 845 3 120 3 075 3 045

3 320 3 275 3 245 3540 3 490 3 460 3740 3 690 3 660

3940 3 890 3 860 4 140 4090 4 060

-

-._

-

Number

:; 72

80

E

96 104 112

112 120

BOLT

Thread Nominal

Dia

11 20 1120 M 20

M 20 M 20 XI 20

XI 20 .lf 20 M 20

XI 20 N 20

-7 VEWZL THICKNESS

st, Min WEIQHT OF

A SIN0I.R bp FLANGE

kg APPROX

91.1

1::

109 116 123

132 222 233

247 260

Non - Sizes shown in parentheses are of second preference.

js is normal thickness of shell. If higher or smaller thickness is desired. it shall be mentioned in the order.

Indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT : WELDED SHELL FLANGES FOR CARBON STEEL PRESSURE

VESSELS AND EQUIPMENT

1, SCOPE

1.1 This standard specifies the requirements for welded shell flanges for carbon steel pressure vessels and equipment.

2. DIMENSIONS

2.1 The dimensions for welded shell flanges, the diameter and numb d baits, vessel thickness and weight shall be as given in Table 1.

3. MATERIAL

3.1 Flange - The material of the shell flanges shall conform to the require- ments specified in IS : 4864-1968.

3.2 Bolts and Nuts -Bolts and nuts shall conform to the requiremcnb specified in IS : 4864-1968.

3.3 Gaskets - Gaskets of type FB for flanges form W and type P’# t&r Aanges form M/F and T/G conforming to the requirements specifial ia IS : 4870-1968 shall be used.

4. DESIGNATION

4.1 The welded flange shall be designated by the machining condition and groove form in which supplied, nominal diameter, flange thickness (h ) and number of this standard.

Example:

A welded flange supplied in machining condition B with groove form T having a nominal diameter 600 mm and flange thickness h = 35 mm shall be deaignatal aa:

Welded Flange BT 600 X 35 Is : 4&6-1368

13

(cluu.w 2.1 )

All dimensions in millimetrca.

TABLE 1 DIMENSIONS FOR D SHELL FLANGES FOR GARBON STEEL m- BLS AND EQUDWENT

07

FORWW FORM T FORM G FORM M

OETAHS Al X 6nOw~ WI-W SHELL) FORM F

l t+ uHuo*IED 8-0 c -0 h?JJ OmU.EO hMCHNNG CONDITIONS

*The machining allowance ahall be KJ aelected tbat the de&d profile may be acbicved without difficulty. The values given are adequate in case of W, G and F’ forms. In case of T and M forms. it ahall be suitably increased.

TABLE I- Contd -

1

I

NONI- NAL Dl A-

mm8R

FLANGE BOLTS

-

Min

W!al@m Ol’ .A

SINGLE FLANGE

kg iPPROX

nxAxt~u.i ALLOWABLE PRESSURE IN kgf/cmt AT THE MI~~IMUM WORKING

TEMPERATURE IN “C

GROOVE FORM

-

4

-

18

;: 5 6

18 22 26

5 6

18

E f 8

:z 26

6

8”

:; f 26 8

-

4 I1 da

I

324 326 25

::

368 370

421 25 35 45

415 375 12 430 385 : 445 395

460 420 16 475 430 490 440

510 470 IG

459

510

zs 45

525 480 545 -495

550 510 20 565 520 580 530

30 600 35 615 45 635

rhreac Nom..

nal Dia

G&F 4 Num- bcr

T&M

4 4 4

zi 352

4

344

3”;

324 324 324

322 10.1 322 13.9 322 21.2

3% 388 394

E 368

-390 390 396

% 366

11.2 18.1 26.1

439 439 445

419 419 419

421 441 447

417 417 417

12.5 20.2 31-5

477 457 479 455 16.5 477 457 479 45 5 22. 483 457 485 455 32.4

528 528 534

E 508

530 506 18.1 530 506 24.1 536 565, 37

-

20

-

- -

120

-

200

-I -

7.2 6.4

:: 1:

7.2

::

6.4

;;

5.4 11 18

1; 16

5 10 16

5.4

:A

4.5 9

14

--

G 419

(4573

508

nf 16 M 20 M 24

n4 16 n* 20 M 24

M 16 M 20 n,f 24

n4 16 M 20 M 24

M 16 nf 20 M 24

5.t 4.8

1; 185

4.2 3.6 9 8

14 12

4.2 36 9 8

14 12

3.5 7

I1

-

t 10

Nora 1 =T The sealing surface shall only be machined after completion of all welding.

Nora 2 - Sizes shown in parentheses arc of second preference.

ts is the normal thickness of shell. If higher or smaller thickness is desired, it shall be mentioned in the order,

TABLE I DIMENSIONS FOR WELDED SHELL FLANGES FOR CARBON STEEL PRESSURE i VESSELS AND EQUIPMENT - Conrd

All dimcnsiotis in millmetres.

MAXIMUM ALLOWABLE PRISMIRE IN kgf’/cm2 AT rn~ MAXIMUM WORKING TEMPERATURE IN “C

-

:- ._ VESSEl THICK NESS st

MiR

GRGGVE FORM

-

_

T&M I

G&F

da

-I-

4 4 --

z: 62a

600 %

700 728 700 728 700 734

800 828 800 800 8823:

900 928 900 934

1000 1028 1000 1034

WEIGH’2 OF A

SINGLE

kg APPROX

t 8

62E 62E 632

598 598 598

726 726 732

698 26.5 698 37.9 698 56.6

826 826 832

798 30.1 798 44.8 798 70.1

926 932

898 50.1 898 85.4

f 1 026 1 032

998 62.8 998 94.1

6 1 126 1 100 1 128 1098 68.5 8 I 332 1 100 1 134 1398 112

d 8

I 200 I 228 ! 198 75.5 1200 1234 1 198 121

T- -

‘I/ FLANGE I BOLII NOM. NAL DIA-

METER Yhreac Nomi-

nal Dia

M 16 M 20 M 24

M 16 M 20 M 24

M 16 M 20 M 24

M 20 M 24

M 20 M 24

:2’9

M 20 M 24

120 200

- -

250 300

-- -

4.5 4 9 8

14 13

3.t

1:

-

2 10

3.6 3.2 2.8 7.2 6.4 5.6

I1 10 9 5:; 8

3.6 3.2 2.8 2.4 7.2 6.4 5.6 4.8

I1 10 9 8

5.4 5 4.2 3.6 II 10 9 8

5.4 5 4.2 3.6 9 8 7 6

4.5 4 3.5 3 9 8 7 6

3.5 5.h :.8

4 h

--

602 30

;;

702 30 800 760 40 810 765 50 830 780

802 30 40 55

E 930

860 870 880

902 40 1015 970 60 1030 980

I002 45 I115 1 070 60 1 130 1080

1 102 45 I215 i 170 65 I 230 1 180

I 202 45 I315 1770 65 I 330 1 280

-

20

-

5 10 16

: 13

24

28

32

36

40

44

48

600

z 700

800

900

loo0

I 100

I 200

(1 300)

1400

(1700:

1 800

(1 900:

z

2 000

(2 100)

2 200

1 303

1403

1803

2 203

45 70

45 70

50 70

55 70

55 75

G

:;

z

E

58

115 1 370 235 1 385

515 535

1470 1485

615 1 570 635 1 585

715 735

815 835

1 670 I 685

770 785

915 940

015 040

115 140

215 24a

315 340

870 890

1 970 1 990

2 070 2 090

2 170 2 190

2 270 2 290

52

56

60

64

68

72

76

80

84

88

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 ?.4 2.1

t

8 8

8 8

:

s

!

!

8 8

8 8

8 8

1 326 1 332

1 426 1 432

1 526 1 532

1 626 1 632

1 726 Z 732

1826 1 832

1 926 I 932

2 026 2 032

2 126 2 132

2 226 2 232

1 300 1 328 1300 1334

1 ro0 1428 1400 1434

1500 1528 1500 1534

1600 1628 1600 I634

1 700 I 728 1 700 1 734

1800 I828 1800 1834

1900 1928 1900 1934

2 000 2028 2 000 2 034

2 100 2 128 2 100 2 134

2 200 2 228 2 200 2 234

-

1298 80.9 1298 146

1 398 86.8 1398 157

1498 103 1498 167

1598 120 1598 178

1 698 128 1698 202

1 798 134 1 798 236

1898 142 1898 250

I 998 150 1998 260

2 098 172 2098 291

2 198 178 2 198 332

4.5 7.2

::;

3.6 5.4

3.6 5.4

3.6 5.4

2.7 5.4

;::

2.7 4.5

:::

$5

NOTE 1 -The sealing surface shall oni:. be machined after completion of all welding.

NOTE 2 - Sizes shown in pr;:n :!:ts~s are of second preference.

ts is the normal thickness of&e If higher or smaller thickness is desired, it shall be mentioned in the order.

i.4

3.2 5

3.2 5

3.2 5

2.4 5

2.4 I

2.4 4

?*4 4

2.4 4

-

3.5 5.6

;:;

::;

::;

2.8 4.2

:::

;::

2.1 3.5

2.1 3.5

2.1 3.5

j.8

2.4 3.6

::;

1.8 3

1.8 3

1.8 3

1.8 3

TABLE 1 DIw-N$JGNS FOR WELDED SHELL FIANCES FOR CARBON STEEL PRESSURE V.ESSEI,S AND EQUIPMENT - Conrd

All dimensions in millimetrcs.

Now- NAL DIA-

MTER

(2 300)

& 2400

2 600

4

--

2 303

2403

2603

2 800 2 803

3000 3 003

3200 3 203

BOLTS GROOVX FORM FWNCHS VVEICHT MAXIMUM ALLOWABLE OF A PRESSUREIN kgf/cm2 AT SINGLE THE MAXIMUM WORKINCJ kg TEMPERATUREIN "C

-

20 -

2 5

:

:

:

2 3

:

-

300 -

1.2 3

:::

1.2 2.4

:::

1.2 1.8

;:;

VESSEL

THICR- - NESS st T&M G&F

4PPROX

2 328 2 334

4

2 298 2 298

187 340

2 428 2 398 203 2 434 2 398 334

2 628 2 598 220 2 634 2 598 417

2 828 2 798 255 2 834 2 798 490

3 028 2 998 297 3 034 2 998 496

3 228 3 198 336 3 234 3 198 558

Vum be;

92

96

104

112

120

128

da

2 41! 2 440

2 520 2540

2 720 2 745

2 920 2 950

3 120 3 150

3 320 3 350

Yhrcad Yomi- nal Dia

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

M 20 M 24

4

2 370 2 390

2 475 2 490

2 675 2 695

2 875 2 900

3 075 3 100

3 275 3300

Min -

4 _

2 326 2 ‘332

2 426 2 432

2 626 2 632

2 826 2 832

3 026 3 032

3 226 3 232

--

4

2 300 2 300

1400 2400

2600 2600

2800 2800

3 000 3000

320( 3200

-

_‘_ ._

NOTE I -The sealAg surface shall only be machined after completion of all welding.

NOTEP - Sizes shown in parentheses are of second preference.

ts is the normal thickness of shell. If higher or smaller thickness is desired, it shall be mentioned in the order.

IS:4867-1968

Indian Standard SPECIFICATION FOR SHELL FLANGES

FOR VESSELS AND EQUIPMENT : WELDED NECK SHELL FLANGES FOR CARBON STEEL FOR PRESSURE VESSELS AND EQUIPMENT

1. SCOPE

1.1 This standard specifies the requirements for welding neck shell flanges for carbon steel pressure vessels and equipment.

2. DIMENSIONS

2.1 The dimensions for welded neck shell flanges, the diameter and number of bolts and weight shall be as given in Table 1.

3. MATEBIAL

3.1 Flange -The material of the neck shell flanges shall conform to the requirements specified in IS : 4864-1968.

3.2 Bolts and Nuts -Bolts and nuts shall conform to the requirements specified in IS : 4864-1968.

3.3 Gaskets -With these flanges, gaskets conforming to IS : 4870-1968 shall be used.

4. DESIGNATION

4.1 Welded neck flange shall be designated by the machining condition and groove form in which supplied, nominal diameter ( dr ), thickness ( ht ) and number of this standard.

Example:

A welded neck flange supplied in machining condition B with groove form F having a nominal diameter dt = 600 mm and thickness h, = 40 mm shall be designated as:

Welded Neck Flange BF 600 x 40 IS : 4867-1968

19

TABLE I DIMENSIONS FOR WELDED NECK FLANGES FOR CARBON STEEL PRESSURE VESSELS AND EQUIPMENT

( Clause 24.1 )

All dimensions in millimctres.

3

FORM W mM 1 FORM G FORM M

DETAILS AT X

FORM F

B MACCHNED c MACHNED AN0 DRLLED

MACHINING CONDITIONS

TABLE 1 - Conki

i

I

1

Nom- NAL

I DIA- - MrRR

4

FLANOP BOLTS GROOVE FORU WEIOHT OF A

SINQLE

FLANQE

kg ApPROX

M~~tuuu ALLOWABLE PRE~~URH IN kgf‘/cm* AT

THE MAXIMUM WORKING TJNPERATURE IN%

hr $1’

--

20 6 20 6 20 6

-

._

t

f 8

:: f f 20 6 8

51(: 470 49 20 6 52: 480 54 20 6 541 495 67 20 8

8” 8

55t 510 49 20 6 561 520 54 20 6 58( 530 67 20 8

560 54 20 6 570 59 20 6 585 67 20 8 590 82 25 8

f 8 12 1

- -

._

T&M I G&F

324

368

tu c 419

(457)

508

da

-

t:: 44:

6Ot

f; 64:

Yum- bcr

4 -

20 :20 2oc 250

- - -

10.5 14.5 18.9

8

:z

7.2 6.4 I1 IO !2 !O

5.6 4.8

1; 12

11.8 8 7,2

El :: :“;

6.4 13 !O

5.6

f :

13.4 6

:: ::

5.4 11 18

5

1:

4.2 9

14

455 14.6 455 21.1 455 31.3

6

::

5.4 11 18

13 16

4.2

1:

528 508 530 506 19.5 528 508 530 506 25.6 534 508 536 506 35.6 540 508 542 506 48.6

1: 16 25

4.5 4 9 8

:: ::

3.5 7

11 17

I

300

-

4.8 10 15

3.6

1;

3.6 8

12

2

I:

- t: . .

4 h,

--

375 49 385 54 395 59

420 49 430 54 440 64

rhrcad Nomi- ~al Dis

M 16 M 20 M 24

M 16 M 20 M 24

M 16 M 20 M 24

M 16 M 20 M 24

M 16 M 20 M 24 M 27

--

4 4 4

E 366

417 417 417

12

16

16

20

20

344

;z

324 346 324 346 324 352

386 368 390 386 368 390 394 368 396

439 439 445

477 477 483

419 441 419 441 419 447

457 479 457 479 457 485

NOTE - Sizes shown in parentheses are of second preference.

*The dimension 51 of the welding neck generally cormsponds with the thickness of shell, the dimension indicated is for b

guidance. When $1 is rc9uhcd to bc larger the inside diameter will become less and this shall bc agreed upon between the pur- 3

chaser and the supplier. ,

( Continued ) G

g

TABLE 1 D%MENSIONS FOR WELDED NECK FLANGES FOR CARBON STEEL PRESSURE “1 . .

VESSELS AND EQUIPMENT - C&d All dimensions in millimetrcs.

4 L

MAXIMUM ALLOWABLE g hs6URE IN kgf/cm* AT 8 THE MAXIMUM WORKING

TEMPERATURE IN “C

-

I 1 Non- HAL DIA-

Ml-RR

4

FLANOE BOLT8 GROOVE FORV NEIOH3

OF A

%lGLE FLANGE

kg %PPRO:

t r

-

1: 12 12

8

t; 14

t 10 10

8

f; 14

: 8

10

8 8

1: 1: 16 10

T- --

T&M G&F -

4 % 4 4 --

626 600 628 598 30.7 632 600 634 598 48 632 600 634 598 59.7 636 600 638 598 75.3

726 700 732 700 732 700 736 700

y& ;s

734 698 738 698

34.9 55.3 76.7 99.3

826 800 832 800 832 800 836 800

828 798 47.9 834 798 72 834 798 91.6 836 798 117

926 932 932 936

900 900 900 900

000 000

E

928 898 53.5 934 898 80 934 898 101 938 898 i31

926 032 032 036

028 998 55.8 034 998 88.6 034 998 128 038 998 163

Num, ber

Thread Nomi-

nal Dia

da 4

-- 250 300

7 6

f : k! 17 15

4.8 8

1:

4.8 8

1:

4,2 9

;:

3.6 8

10 12

4.2 7

11 14

3.6

: i2

600

w 700

800

900

1000

710 665 730 68C 745 690 760 695

765 7aa 79a ati

59

;; 105

87fi 880 890

970 980 990 000

:; 95

108

070 64 080 82 095 105 105 118

24

28

32

36

40

M 20 M 24 M27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 Mu 30

7.2 11

::

5.4 9

14 18

810 830 845 865

915 930 945 965

015 030

::

115 130 150 170

1

1 1

1 loo

i 200

(1 300)

1400

M (1 500)

1600

+a

52

56

60

64

8” 13 16

; 13 i6

t 0 3

4

.: 3

4

f .3 -

8 0 3

;.. 0 3

;::

t

3.2

85 0

3.2

: 0

3.5

; I1

3.5 5.6 9 I1

: 8 9

::B’ 6 8

1.4 I.6

67

1:: 116

:; 105 118

:; 105 118

E 115 128

:; 115 128

1 M24 250 270

315 330 350 370

1270 1 280 1295 1 305

415 1370 435 1 385 45G 1 395 470 1405

515 1 470 535 1 485 550 1495 570 1505

515 535 555 575

1 570 1565 1600

610

670 685 700 710

I M 27 M 30

132 136

1lOC I loo 1 098 179

226 1 200 232 1 200 232 1 200 236 12OC

1 228

f z:: 1 238

1 198 1 198 1 198 1 198

326 1 300 1 328 1298 80 332 1 300 1334 1 296 131 332 1 300 1 334 1298 165 336 1 300 1 338 1 298 210

426 432 432 436

1400 1400

:‘Ez

1 428 1 398 86.4 1 434 1 398 141 1434 1 398 178 1438 1 398 224

526 1 500 1 528 1 498 92.6 532 1 500 1 534 1 498 151 532 1 500 534 1 498 215 536 1 500 538 498 268

626 1 600 628 598 632 1 600 634 598 632 1 600 634 598 636 1 60C 63f 598

1:; 229 282

f

:

f,

:s of: l! l! l! 11

I(

:1 1t

1; 1; 1; 1;

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

‘-4 1.6

-

NOTE - Siza shown in parentheses arc of second preference. t:

.The dimension st of the welding neck generally corresponds with the thickness of shell, the dimension indicated ir for guidance. When ~1 ir required to be larger the inside diameter will become lc~ and this #hall be agreed upon between the purchaser & and the supplier. S

I

TABLE 1 DIMENSIONS FOR WELDED hhCK FLAhGES FOR CARBON STEEL PIbESbURE VESSELS AND EQUIPMENT - Cotid

tf . .

r MAXIMIJ~~ ALLOWABLE I- PRESSURE IN kgf/cm* AT PHH MA~IUUM WORKING

TEMPERATURE IN “C

All dimensions in millimetres.

-i -

-_ NOMI- NAL DIA-

ldElER da \Tum.

ber

BOLTS

I%reac

GROOVR FORM WEIQH: OF A

SINGLE FLANQE

ke 4pPRO>

I’ FLANGE

-I I

-

- --- -- -

40

;: 65

1815 1770 72 20 8 10 1835 1 785 92 30 8 12 1 855 1 800 115 40 10 16 1875 1810 128 45 12 18

40

:: 65

1915 1870 72 20 8 10 1940 l&90 102 35 8 14 1955 1900 115 40 10 16 1975 1910 128 45 12 18

40

:: 70

2015 1970 72 20 8 2040 1990 102 35 8 2060 2005 125 45 10 2080 2015 138 50 12

E 65 70

2 115 2 070 72 20 8 2140 2090 102 35 8 2 160 2 105 125 45 10 2 180 2 115 138 50 12

40

2: 75

2215 2 170 72 20 8 2240 2 190 102 35 8 2260 2205 125 45 10 2 285 2 220 148 55 12

10

:t 20

10

E 20

IO 14

:;

--

I

_-

1

/

,

,

I I

I

T&M G&F - -

250 100

- -

3.2 2.8 5 4.2

1: ;

1.4 i.6 , I

::: ::; 5.6 4.8 7 6

2.4 2.1

t.4 ;:“6

8 7

1.8 3 4.8 6

2.1 3.5 5.6 7

1.8

Ll 6

2.1 3.5 5.6 7

1.8

43.8 6

2.7 5.4 7.2 9

2.7 4.5 7.2 9

2.7 4.5 7.2 9

2.7 4.5 7.2 9

4 200 nal Dia

hJ 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 hl 24 M 27 M 30

M 20 M 24 M 27 M 30

h4 20 M 24 M 27 M 30

(1 700)

Y 1800

(1 900)

2 000

(2 100)

68

72

76

80

84

I 726 1 700 1 728 1 698 118 I 732 1700 1 734 1 698 170 L 732 1 700 1 734 1 698 242 I 736 1700 1 738 1 698 302

I 826 1800 1 828 1 798 125 I 832 1 800 1 834 1 798 207 I 832 1800 1 834 1 798 255 I 836 1800 1 838 1 798 319

I 926 1 932 I 932 1 936

1 900 1900 1900 1 900

2000 2000 2 000 2000

2 100 2 1Oc 2 100 2 1Oa

1928 1 898 132 1 934 1 898 217 1 934 1898 304 1 938 1 898 374

I? 026 2 032 2 032 2 036

2 028 1998 139 2 034 1 998 226 2 034 1 998 319 2 038 1 998 393

2 126 2 132 2 :32 2,136

2 128 2 098 2 134 2 098 2 134 2 098 2 138 2098

146

‘3$ 457

2.4

2.4 8

2.4

z.4 8

2.4

l.4 8

2 200

(2 300)

2400

2600

C 2800

3000

3200

40 2315 2270 72 55 2 340 2 290 102 65 2 360 2 305 125 75 2385 2 320 148

I 40 2415 2370 72 55 2 440 2 390 102 65 2460 2405 125 75 2485 2 420 148

45 2 520 2475 82 55 2 540 2490 102 70 2565 2510 135 75 2585 2520 148

45 2 720 2675 82 60 2745 2695 112 70 2765 2710 135 85 2 785 2 720 168

45 2 920 2875 82 65 2950 2900 122 70 2965 2910 135 85 2985 2920 168

45 3 120 3 075 82 65 3 150 3 100 122 75 3 170 3 115 145 85 3 185 3 120 168

45 3320 3 275 82 65 3 350 3 300 122 80 3370 3315 155 85 3 385 3 320 168

10 18 12 22

8 10 8 14

10 18 12 22

8 12 8 14

10 20 12 22

8 12 8 16

10 20 12 22

8 12 8 18

10 20 12 22

8 12 8 18

10 22 12 22

8 12 8 18

10 22 12 22

-- 8 l

10 - -- 8’3 M 20 8 14

92

96

104

112

120

128

E? M 30

M 20 M 2;2 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

M 20 M 24 M 27 M 30

2 226 2 232 2 232 2 236

2 200 2 200

2 326 2 332 2 332 2 336

2 300 2 300 2 300 2 300

2 426 2 432 2 432 2 436

2400 2 400 2 400 2400

2 626 2 632 2 632 2 636

2600 2 600 2 600 2600

2 826 2 832 2 832 2 836

2 800 2 800 2800 Lb 800

3 026 3 032 3 032 3 036

Ez 3000 3 000

3 226 3 200 3 232 3200 3 232 3200 3 236 3 203

153 251 350

2 238 2 198’ 475

2 328 2 298 160 2 334 2 298 262 2 334 2298 365 2 338 2 298 496

2 428 2 398 193 2 434 2 398 273 2 434 2 398 427 2438 2 398 519

2 628 2 598 213 2 634 2 598 334 2634. 2598 458 2 638 2 598 640

2828 2 798 229 2 834 2 798 410 2834 2 798 491 2 838 2 798 682

3028 2998 245 3 034 2 998 436 3 034 2 998 584 3038 2 998 733

3 228 3 198 260 3 234 3 198 462 3 234 3 198 665 3 238 3 198 780

9 8

1.8 1.6 4.5 4 5.4 5 7.2 6.4

1.8 1.6 3.6 3.2 5.4 5 7,2 6.4

1.8 1.6 3.6 3-2 5.4 5 7.2 6.4

1.8 1.6 3.6 3.2 4.5 4 7.2 6.4

l& 1.6 2.7 2.4 4.5 4 7.2 6.4

1.8 1.6 2.7 2.4 4.5 4 5.4 5

1.4 I 1.2 3.5 3

:*z . 43.86 .

1.4 1.2 2.8 2.4.

:z . :*B” .

1.4 1.2 2.8 2.4 4.2 3.6 5.6 4.8

1.4 1.2

E t4 5.6 4.8

1.4 1.2

‘3:: ‘s’” 5.6 4-8

1.4 1.2 2.1 1.8 3.5 3 4.2 3.6 F

NOTE - Sizes shown in parentheses are of second preference.

*The dimension $1 of the welding neck generally corresponds with the thickness of shell. the dimension indicated is for guidance. When 11 is required io be larger the inside diameter wili become less and this shall be agreed upon between the purchaser and the supplier.

Indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT : WELDED SHELL FLANGES FOR STAINLESS

STEEL PRESSURE VESSELS AND EQUIPMENT

1. SCOPE

1.1 This standard specifies the requirements for welded shell flanges for stainless steel pressure vessels and equipment.

2. DIMENSIONS

2.1 The dimensions for welded shell flanges, the diameter and number of bolts, vessel thickness and weight shall be as given in Table 1.

3. MATERIAL

3.1 Flange - The material of the welded shell flanges shall conform to the requirements specified in IS : 4864-1968

3.1.1 The material for the backing plate shall be the same as the material of the shell or as may be agreed to between the supplier and the purchaser.

3.2 Bolts and Nuts -Bolts and nuts shall conform to the requirements specified in IS : 4864-1968.

3.3 Gaskets - With these flanges, gaskets conforming to IS : 4870-1968 shall be used.

4. DE!XGNATION

4.1 Welded flange shall be designated by the machining condition groove form in which supplied, nominal diameter, thickness ( Ir ) number of this standard.

Example:

and

A welded flange supplied in machining condition B with groove form F having a nominal diameter 600 mm and thickness h = 35 mm shall be designated as:

Welded Flange BF 600 X 35 IS : 4868-1968.

26

TABLE 1 DIMENSIONS FOR WELDED SHELL FLANGES FOR STAINLESS STEEL PRESSURE VESSELS ,AND EQUIPMENT

(Clau,e 2.1 )

All dimensions in millitnetrcs.

FOAMW FORM T FORM G FOR!4 hd

DETAILS AT X (SHOWN WHH SHELL)

FORM f

,, _._- ENLARGED DETAIL AT V

74 lRMAcn?JEo B MACHINE0 C MACHINED AN0 DRILLED I&

MACHIMNG CONDITIONS !l

*The machining allowance shall be so selected that the finisbed profile may be acbitved without I dilculty. III the absence of agreement between the

uJ urchaser and the supplier regarding the machining CI

allowance, the values given in the figure should be . For flange form T, the height of the tongue or for form M the height of male part should be taken into account for backing plate. ( Canrinwd) %

TABLE 1 DIMENSIONS FOR WELDED SHELL FLANGES FOR STAINLESS STEEL m . .

PRESSURE VESSELS AND EQUIPMENT- Contd

All dimensions in millimetrcs.

-

I - -

r MAXWJM

ALLOWABLE PRESSURB IN kgf/cm2 AT

THE Mlvrr~uv WORICINC3 TEWERATURE IN ‘C

FLASGE BOLTS \‘ES. SEL

‘HICI NESS

st Min

Now NAI. DIA,

NzTEl

8 324

368

419

(457:

508

GROOVE Fo~sr

T&M G&F

OF A

SrNCLE FLANGE

kg APPROJ - -

4 4 4 2( 120 2(

- - --

E 3%

324 324 324

-_ 1 34f 322

346 322 352 322

9.7 13.5 20.5

,i

2E

7:2 6

:: :8

3”: 368

3”: ;z 396 366

10.7 17.4 25.3

E 7.2 6

:: :4 ::

439 439 445

419 419 419

Zf 447

417 417 417

12.1 19.4 30.2

6

::

477 457 479 455 15.6 477 457 479 455 21.2 483 457 485 455 31

6

::

5.4 4 10

:A 16

5.4 4 11 10 18 16

528 508 528 508 534 508 540 508

530

2% 542

506 17.2 506 23.2 506 31.7 506 42.6

5

:: 25

4.5 4 9 8

:2 ::

-

4

-

__

, I

I

- --

415 430 445

375 350 385 355 395 360

460 475 490

420 395 430 400 440 405

510 470 445 525 480 450 545 495 460

550 510 485 565 520 490 580 530 495

% 635 645

560 535 570 540 585 550 5w 55.1

-

d,

-

:i 26

4 4 5

:2” : 26 5

:: !6

4

:

18

i’G 30

: 6 7

-

-n-

i

I 1

, , ,

,

I

-

I

--

;

Num ber

Threat Nomi-

nal Dia

4 -

250 300

-

5.t

1;

4.8

1:

5.f 11 17

4.8

f:

4.2 3.6

1: 1;

4.2 9

.4

3.5 7

:

3.6

1;

z 10 15

--

10 :

-_

a4

.4

*8

1

4

1

32(

37(

421

45s

510

12

16

16

20

20

M 16 M 20 M 24

M 16 M 20 M 24

M 16

s:

M 16 M 20 M 24

M 16 M 20 M 24 M 27

700

602

702

800 802

900

M

1000

I 100

1 200

(1 300)

1

1

1

I1 / L

*2

002

102

202

303

-

,

30 40

5’; 55

30 40

:55 65

30

5: 65 75

700 660 710 665

::s z 760 695 1

800 760 810 765 830 / 780 645; 790 865 i 800

900 ’ 860 835 32 915 870 840 930 880 845 945 890 855

I 965 900 860

40 I I015 / 970

I

635 24 640 645 ’ 655 655

735 28 735 745 755 760

940 36 945 955 960

1040 40 1 045 j

NOTB 1 -The sealing surface shall only

NOTE 2 - Sizes shown in parentheses arc

tr is the normal thickness of shell. If high

$1 16 il 20 ~1 24 Ll 27 \1 30

il 16 iI 20 U 24 ii 27 rl 30

rl 16 bj 20 vi 24 vf 27 cl 30

ri 20 of 24 rl 27 rl 30

rl 20 rl 24

rl 20

d 20

rl PO

18 22

E 33

22 26

3330

22 26

22

22

22

-

bP5 600 628 626 600 628 632 600 634 632 6oc 634 636 600 638

726 726 732 732 736

700 70(1 700 700 700

728 728 734 734 738

FE 832 832 836

800 800 800

:%

828 828 834 834 838

926 932 932 936

900 900 900 900

1 000 1000

1 100

1 200

I 300

928 934 934 938

I 026 I 032

I 126

226

326

1 028 1 034

1 128

I 228

1 328

machined after completion of all welding.

second preference.

598 59E 59F 598 598

698 698 698 698 699

798 798 798 798 798

898 898 898 898

998 998

098

198

298

22.1 31.9 42.4 52.3 64.1

25.5 36.6 48.5 72.7 89.7

29 43.6 61 88.4

117

48.5 81.8

1::

60.6 90.2

66.1

71.5

85.5

li If 2( 2:

: 13 2c 25

5

5

5

-

4.: 9

14 18 22

3.t 7.2

II 18 !2

3.6 7.2

1: !2

5.4

I 18

t 13

:o”

3.2 6.4

IO 16 20

4

3.5 7

I1 14 17

2:: 9

14 17

;:A

9

I’:

4.5

1: .4

4.5 7

3.5

3.5

3.5

2.4 4.8 8

12 15

2.4 4.8 8

::

3.6 8

1’8

3.6 6

3

3

-L

B .

c smaller thickness is desired, it shall be mentioned in the order.

I

TABLE 1 DIMENSIONS FOR WELDED SHELL FLANGES FOR STAMLESS STEEL td .o

PRESSURE VESSELS AND EQUIPMENT - Centi

All dimensions in millimetres. Q

IEasE hC1 NES! d

Min

-7

\

--

IL NOYI-

YAL Du- y1TX1

T

BOLTS FLANGE GROOVE FORM WEIGH: OF A

SINGLE - FLNWI

T&M G&F kg

r

8’ L

ALLOWABLE Paassuas IN kgf/cm* AT

THP. Mnuyuy Wcntuno TEMPERATURE IN “C

APPRO: K

-

4

-

22

22

22

22

22

22

22

‘_

1

1

1

1

1

1

2 -

Num her

bread Nomi-

nal Dia

56 M 20

60 M 20

64 M 20

68 M 20

72 M 20

76 M 20

80 M 20

-- -

,463

503

603

703

863

903

003 -

- -

200 250

- -

3.2 2.8

3.2 2.8

3.2 2.8

3.2 2.8

2.4 2.1

2.4 2.1

2.4 2.1

- -

-

300

-

24

2.4

2.4

2.4

1.8

1.8

1.8

-

10 120 I --

4 3.6

4 3.6

4 3.6

4 3.6

3 2.7

3 2.7

3 2.7

g 1400

(1500)

1606

(1760)

1800

(1 900)

2 000

55 1915 1870 l&H)

60 io15 1970 1940

60 2115 2070 2040

NOTE 1 - The sealing surface shall only be machined after completion of all welding.

NOTE 2 - Sizes shown in parentheses are of second preference.

7s is the normal thickness of shell. If higher or smaller thicknas is desired, it shall be mentioned in the order.

IS:4869-1968

indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT : WELDED SHELL FLANGES WITH HUB FOR

STAINLESS STEEL PRESSURE VESSELS AND EQUIPMENT

1. SCOPE

1.1 This standard specifies the requirements for welded flanges with hub for stainless steel pressure vessels and equipment used in chemical industry.

2. DIMENSIONS

2.1 The dimensions for welded shell flanges with hub, the diameter and number of bolts, and weight shall be as given in Table 1.

3. MATERIAL

3.1 Flange - The material for welded flanges except for the stainless steel hubs and backing plate shall conform to the requirements specified in IS : 4864-1968.

3.1.1 The stainless steel hubs and backing plate shall be of the same materjal as of the shell unless otherwise agreed to between the supplier and the purchaser.

3.2 Bolts and Nuts -Bolts and nuts shall conform to the requirements specified in IS : 4864-1968.

3.3 Gaskets -Gaskets of type FB for flange form W and type FS for flanges form M/F and T/G conforming to the requirements specified in IS : 4870-1968 shall be used.

4. DESIGNATION

4.1 Welded flanges with hub shall be designated by machining condition and groove form in which supplied, nominal diameter ( d1 ), flange thickness ( iii ) and the number of this standard,

Example:

A welded flange with hub supplied in machining condition B with groove form F having a nominal diameter a, = 1 000 and flange thickness h, = 65 shall be designated as:

Welded Flange with Hub BP I Ooo .x 65 JS * 4869-1968.

31

3 f x 0

I *

f -.

S96

1’69

W:S

I

*The ma&i&g allowance ahall be ao selected that the finished profile may be achieved without difficulty. In the absence of agmement between the purchaser and the supplier regarding the machining allowance, the values given in the fbrm shouldbe used. For 6ange form T, the height of the tongue or for form M the height of male part should be taken into account for backing plate.

When the welding 6anges are ordered according to machining condition A together with the corresponding backing plate and hub, this should be indicated with the order.

f&k& we@ng the backing plate on to the flange, the flange surface shall be machined. -

FUNOX Boila UOUI-

i.E - ’ l- $1 h da

-

da Yum ber

Iluead d, Nomi- ml Dia

GROOVR FORM WEIOIil OF A

SINQLE

FLANOB kg

APPROX

M~urrlrum ALLOWABLE PaEaSJRe IN kgf/Cma AT THE MAXIMUM WORKtN6

TEMPBRATURB ‘Cl

-

'0

-

120

- -

200 250 300

loo0 ii r

8 70

-

I 08c I 095 I 105

__

1 , i

ha

-

:E 118

82 105 118

82 105 118

11: 118

-I-

I --

-c

1

1

I 1 1

1 1 1

1 1 1

-

-

1: 18

-

I 130 1 150 1 170

1045

:E

601 8 8 14 9

10 16 10 i: 20

1: 16

f 12

1100 50 65 70

1230

tE

I 18C b 1 145 I 195 i 1160 I 205 i 1 165

f :: ! 10 16 10

:: 16

9 8

:: :s

1: 14

; 11

5.l 9

11

5.6

1;

t 9

1200 :z 75

(1309) ;;

75

1330 1350 1 370

1435 1450 1470

6 10 8 8 16 10

10 16 10

I232 1200 I232 1200 I236

I

1200

I 1234 1234

I 1 1

1238 1

198 122 198 171 198 223

1: 16

7.2

::

6.4 10 13

4.8

s

6 12 9 8 16 10

10 16 10

52 8 7.2

:: ::

6.4 10 13

4.8

g t: . .

- - - - NOTR - Siaea ahown in parenthexs are of second preference. b

$The dimension ~1 of the welding neck enerally corredponds with the tbickncss of shell. %

The dimension indicated is for gui- 3 dance: When ~1 is required to be larger t e inside dieter will become less and this shall be agreed upon between the purchaser I and the supplier.

( Continued ) f

01 8

b.9 2%

3: 067, 9EI

1% $871

liEI

LEE ZLZ

E

OIE 8EZ ZLI $01

LSZ 0171 191 68

86L 1 8E81 0081 9E8 1 86L I +&8 I 0081 ZE8 1 86L I P&8 I 008 I ZE8 1 86L I 8Z8 I 0081 9Z8 1

869 I 8EL I 869 1 fEL I 869 I PEL I 869 I 8ZL I

865 I 86s I 86C I 865 I

86P I 86f7 I 86P I 86) I

86E I 86E I 86E 1 86E I

8E91 x9 I fE9 I 819 I

001 I OOL I OOLI OOLI

009 I

: I

8E,'i. J PES I PE6 8ZIs :

8E+ PGP PEP 8Zf

009 009

it: DOS DOS1

DOPI

EI DO+1

9EL EEL ZEL 9ZL

9E9 ix9 ZE9 929

9% Z&5 ZES 9ZF 1

K i

Et I

OS yu: LZ R PZ n 0154

OE l-v LZ R *z nI oz VI

OE VI LZl4 PZ JAI oz VI

OE w LZ VI PZ w oz R

OE w LZ yv *z VI, 071 l+I

II

t 9

II

t 9

II

! 9

11

! 9

DI

! 9 -

1’s

-

8ZI OL81 0161 CL61 08 SII 5981 0061 SS61 SL ZOI 'X81 0681 OKI S9 ZL’ W81 Of81 SISI St ZL

89

+9

09

9s

0081

hOL I)

0091

:006 I) 3,

OO+I

8Z! OLL I 0181 FL8 511 E9LI 0081 'X8 Z6 SSL I S8L I SE8 ZL OVL f OLL I S18

SLL SSL SEL GIL

FL9 x9 SE9 F19

OLF WC SEF FIG

8ZI tlL91 FII 599 I Z6 OS91 L9 Of91

8ZI OLSI FII F9c.I 26 O$fI L9 OHI

811 S9+1 SO1 09+1 Z6 0'31 L9 CM1

OIL OOL

E

019

E OLS

SOS S61,

ES ----

-1 - xold

-dV ‘Y 6P ‘P B TY

._

- @P

OXddV

3 ONVT~ -IONfS v 10 ZfXXM

=“I mntt

‘P !-ilLEll

-a Tvn .DlON

d189

=ONVTd HtlO~ amourJ

(1900

2ooa

(2 100:

2200

e23w

2400

2600

L_ NOTE - 1 parentheses are of second preference.

‘-$ $The dimtnsion s1 of the welding neck generally corresponds with the thickness of shell. The dimension indicated is for guidance.

3

When s1 is required to be larger the inside diameter will become less and this shall be agreed upon between the purchaser and the L supplier. ( ContinUeIf )

I%

2 011

;E 2081

2 II! 2 14(

E

221! 224(

z;: 1

2 3lf 2 34( 236( 238:

2 41:

;z :

2 52C 254(3 2 565 2 585

2 720 2 745 2 765 2 785

1 97(

KY! 2 Ol!

az 2 10. 2 ll!

2 17( 2 1% 2 205 2 22(

2 37a 239C 240s 2 42a

2 47s 2490 2 510 2 520

2 675 2 695 2 710 2 720

E : t:’ !

% 2 07( 2 075

1;: 125 138

1:; 125 138

2 1% 2 155 2 17c 2 18a

1:; 125 148

K 1:: 2 270 125 2 280 148

E! 2 370 2380

1;: 125 148

2445 2 455 2 475 2480

I:: 135 148

2645 82 !660 112 ! 675 135 !680 168

71i

80

84

88

92

96

104

7

M i0 M 24 M 27 M 30

M 20 M 24 M27 M 30

M 20 M 24 M 27 M 30

%S M 27 M 30

M 20

Ef’: M 30

M 20 M24 M 27 M 30

M 20 M 24 M 27 M 30

1 92t 1 9% 1 931 1 936

2 026 2 032 2 032 2 036

2 126 2 132 2 132 2 136

2 226 2 232

;;z

2 326 2 332 2 332 2 336

2 426 2 432 2 432 2 436

2 626 2 632 ! 632 ! 636

1928 1 89t 142 1 934 1 891 242 1 934 18% 349 1938 1 892 433

2 028 2034 2034 2038

1E 199E 1 99e

149 255 382 493

2 100 2 128 2 100 2 134 2 loo 2134 2 100 2 138

2 098 2 098

GE

171 267 400 560

2200 2 228 2200 2 234 2200 2 234 2200 2 238

2 198 2 198

;E

180 280 420 588

2300 2 328 2 300 2 334 !300 2 334 2300 2 338

2 298

:z 2298

187 293 443 610

2400 2 423 2 393 ! 400 2434 2 398 ! 400 2434 2 398 !400 2 438 2 393

209 322

::

!600 2 628 2 598 225 !600 2 634 ! 598 396 ! 600 2 634 2 598 556 !600 2 638 2598 742

-

:

i l(

i l(

2.4

i.1 8

::: 7.2 9

2 .’

64.4 8

2.7 4.5 7.2 9

2.4

z.4 8

2.4 4

5

1.6 4

65.4

1.8 1.6

$4” 3 7.2 6.4

iv8

$5 7=2

;:;

65.4

I

1

4

I

i

I

-

1.8

i-8 6

1.8

z-8 6

2.1 3.5 5.6 7

1.8

i.8 6

f : 4.2 7

1.8

i-6 6

1.4 1.2

;:; f.6 5.6 4.8

1.4 1.2

;:?” :*6 5.6 t.8

1.4

::; 5.6

::: 3.6 1.8

3 . .

TABLE 1 DIMENSIONS FOR WELDED SHELL FLANGES WITH HUB -Cot&

AU dimensions in millimetres. -

T

e

Now- NAL DIA-

YETJrR dL

2 800

% 3000

3 200

FLANOHI WEtoH OF A

3INOLF FLANQI

kg APPRO:

.I BOLL GROQVE FORM

T&M I

G&F

MAX~LUJM ALLOWABLE PRESSURE IN kgf/cm* AT THE MAXIMUM WORKINO

TEMPERATURE ‘C

-

da da AP- prox

-

n,

- !875 2845 ! 900 2865 !910 2875 !920 2880

IO75 3045 1100 3065 1115 3080 I 120 3 080

82 122 135 168

1:; 145 163

i 275 3245 82 13CO 3 265 122 ;315 3280 155 X320 3 280 168

-

hl 4

--

r Num. ber

--

8 112 0

:

8 120 0

:

! 128

:

_. -

I

_-

I

: t

1

! 1

: 1

-

Thread Nomi- ml Dit

M 20 M 24 M 27 M30

$3 M 27 M 30

M 20 M 24 M 27 M 30

T

4

2 798 2 798 2 798 2 798

260 469 599 873

2 998 281 2 998 502 2 993 694 2 998 936

3 198 323 3 198 542 3 198 812 3 198 998

120

;:; 4.5 7.2

1.8

2:: 7.2

1.8

3:: 5.4

-

._

-

- -

!OO - _-

;:;

64.4

;:y

z.4

::;

z

- -

-

$00

--

do 4 --

2800 2 828 2 800 2 834 2 800 2 834 2 800 2838

3000 3028 3 000 3 034 3 000 3034 3000 3 038

3 200 3 228 3200 3 234 3 200 3234 3200 3238

K-

_-

-

250

2 826 2 832 2 832 2 836

%f 3 032 3 036

3 226 3 232 3 232 3 236

2 920 2 950 2 965 2 985

3 120 3 150 3 170 3 185

3 320 3 350 3 370 3 385

1.4 2.8

;:;

1.4

;:: 5.6

:::

;:;

NOTE - Sizcs shown in parentheses are of second preference.

tThe dimension JL of the welding neck generally correspond6 with the thickness of shell. The dimension indicated is for guidance. when $1 is required to be larger the inside diameter will become less and this shall be agreed upon between the purchaser and the supplier.

lS:4m-1968

Indian Standard SPECIFICATION FOR SHELL FLANGES FOR

VESSELS AND EQUIPMENT : FLAT GASKETS FOR SHELL FLANGES

1. SCOPE

1.1 This standard specifies the requirements for flat gasket rings for shell flanges for chemical equipment as the function of flange inner diameter and the size of the bolts.

2. DIMENS&ONS

2.1 The dimensions for flat gasket for flanges shall be as given in Table 1.

3. MATERIAL

3.3 The gasket shall be of rubber, asbestos, compressed asbestos jointing metal or metal jacketed of quality suitable for the temperature of use.

4. DESIGNATION

4.1 The gasket rings shall be designated by the inner and outer diameter, thickness and the number of this standard.

Example:

A gasket ring having an inner diameter 1 000 mm, outside diameter 1 050 mm and thickness 4 mm shall be designated as:

Gasket Ring 1 000 x 1 050 X 4 IS : 4870-1968

37

TABLE 1 DIMENSIONS FOR FLAT GASKETS FOR SHELL FLANGES ( chuse 2.1 )

!?

All dimensions in ‘millimetra.

USE OF GASKET WITH’DIFFERENT TYPES OF SHELL FLANGES

Tmxmm FOR chum Thickncaa For Gasket Width

5

: up to 20

5 Ch: ;;,and up to 30

TABLE 1 - Cod

I- I

TY?aEB

d,, For Bolts de, For Bolts

M 16 M 20 M 24 M 27 M 30 M 16 M 20 M 24 M 27

354 398 449

487 538 640

E 940

!E 1250

:z 1550

: E

360 364

E E

493 497 544

E 558

640 655 660

;z 750 755 765 650 855 865

940 950 955 965

K8 1 050 1060 1065 I 150 1160 1 165

1240 1250 1260 1265

1340 1 350 1360 1 365

fE 1 450 1460 1465 1 550 I.565 1 570

:z 1 650 1665 1670 1 750 1 765 1 770

1840 1855 1865 1870

1 940 1 955 1 970 1975 2040 2 055 2 070 2 075 2 140 2 155 2 170 2 180

2 240 2 255 2 270 2 280 2340 2 355 2 370 2 380 2445 2 455 2 475 2 480

2645 2 675 2 845 ‘2E

2680 2 875 2880

3045 3065 3080 3080 3 245 3 265 3 280 3 280

_- ‘lawn in parentheses are of second preference.

El 439

477 528 626

726 826

344 388 439

477 528 626

726 826 926

1 026 1 126 1 226

1 326 1426 1 526

1 626 1 726 1 826

1 926 2 026 2 126

2 226 2 326 2 426

2 626 2 826 3 026 3 226

--

350 394 445

483 534 632

732 832 932

1 032 1 132 1 232

1 332 1 432 1 532

1 632 1 732 1 832

1 932 2 032 2 132

2 232 2 332 2 432

2 632 2 832 3 032 3 232

iii 732 832 932

1 032 1 132 1 232

1 332 1 432 1 532

1 632 1 732 1832

1 932 2 032 2 132

2 232 2 332 2 432

2 632 2 832 3 032 3 232

-

* - TYPE FS

M 30

636

736 836 936

1036 1 136 1 236

1 336 1 436 1 536

1 636 1 736 1 836

1 936 2 036 2 136

NOTE - Size

l?it4864-1968

lsr48L68

Members Jlsjnzssanfing

Snat S. S. JAKWETE Indo-Berolina Industries Private Ltd, Bombay SXRI D. SAT~ANARAYANA ( Altemate )

SHRI R. S. KACHWAHA The Fertilizer Corporation of India Ltd, New Delhi SWRI H.‘H. JETHANANDANI ( A1fsrnat.s)

PROP N. R. KAMATH SHRI K. A. NA~K ( Altemak )

Indian Institute of Technology, Bombay

SHRI J. P. KAPUR DR R. K. GUPTA ( Abemak )

Indian Chemical Manufacturers Association, Calcutta

DR hl. G. KRISHNA DR J. S. AHLUWALIA ( Alkrnak )

Indian Institute of Petroleum ( CSIR ), Dehra Dun

PROP N. R. KULOOR Xndian Institute of Science, Bangalore DR D. S. VISWANATH ( Alkrnak )

SHRI B. B. MATHUR The Delhi Cloth & General Milk Co Ltd, Delhi

SHRI R. C. MISRA ,Heavy Eiectricals ( India) Ltd, Bhopal

SHRI K. C. MOHAN Hindustan Steel Ltd, Ranchi

Snaz J. P. MUKWERJEE Walchandnagar Industries Ltd. Walchandnagar, District Poona

DR R. S. DUBEY ( Alkmak )

DR M. U. PAI National Chemical Laboratory ( CSIR ), Poona &RI R. V. KULKARNI ( Afkrnale)

SHIUP. K. PA1 SHRI ‘V. H. PANDYA ( Altemalr )

ESSQ Standard Rehning Co of India Ltd, Bombay

&RI R. PRABHN~~~~ Tata Chemicais Ltd, Mithapw Sxm A. P. NARAYAN~ ( Alkrnak )

D? M. N. RAO Indian Institute of Technology, Kharagpur

Smr V. M. Rio The K. Cl. P. Ltd, Madras SHRI K. SATYANARAYANA ( Ahnak )

SHRI P. c. SILAICHIA SHRI J. B. MALII ( Afkmuk)

Burmah-Shell Refineries Ltd, Bombay

Snm S. P. SINGH Directorate General of Technical Development, New Delhi

SHRI P. K. SMXAN ( Ahnate )

S-I N. THANDAVAN SHRI J. G. BROWN ( Abmak )

The A. P. V. Engineering Co Private Ltd, Calcutta

SW S. D. TIR~JBIALA RA~J Oil (Tl;pedpoiogi~al Rcceruch Institute, Anantpur

SIIR~ B. A. R. SOMAYAJULU ( Al~8)

ss.nu M. V. PATANILAR, Ditor ( Mech Engg )

Ditor cleneraI~IsI (&s&i, A&l&r)

Sxssu M. G. Kstnms~ RAQ

Deputy Dkecra (MeclaEngg). IS1

(4IAlmednpolr41)

IS:4864-1968

lS:*hJ68 ( Continuedfrom pap 40)

Process Vessels Subcommittee, EDC 57 : 2

Convener

SHRIPC'. THANDAVAN

Rcpmenting

The A. P. V. Engineering Co Private Ltd, Calcutta

Members

DR ASCHAR HIJSAIN Regional Research Laboratory ( CSTR ), Hyderabad SHRIK. SESHACHARYIJLU (Altcr~tt)

SHRI J. M. AYAN Dux-r DR D. C. TAPADAR (Altwnafc)

SHRI A. R. BORKAR

Indian Institute of Chemical Engineers, Calcutta

ESSO Standard and Refining Co of India Ltd, Bombay

SHRI N. K. BUZRUK National Chemical Laboratory ( CSIR), Poona

SHRI S. GHOsn Imperial Chemical Industries ( India) Private Ltd, Cjalcutta

DR S. K. CHANIW (Al&mate)

SHRI R. S. GROVER SHRI P. V. S. NA~YBOOTHXRI-

PAD ( Alternate )

SHRI H. H. JETHANANDANI

DR 0. P. KHARBANDA

PROP N. R. KULOOR

The Ralph M. Parsons Company of Asia, Bombay

The Fertilizer Corporation of India Ltd, Sindri

Larsen & Toubro Ltd, Bombay

Indian Institute of Science, Bangalore

Burmah-Shell Refineries Ltd, Bombay SHRI J. B. MALIK SHRI P. C. SILAICHIA ( Alt+matc )

SHRI T. S. NAYAR Indian Institute of Petroleum ( CSIR ), Dehra Dun SHRI RANJAN GOEL ( Altcmte )

SHRI V. M. RAO The K. C. P. Ltd, Madras SHRI K. SAT~ANARAYANA (Altmatc)

Dn Y. VENKATWESHAY Central Design and Engineering Unit (CSIR ), New Delhi

41

BUREAU OF INDIAN STANDARDS

Headquarters: Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 Talephones : 331 01 31, 331 13 75 Telegrams : Manaksanetha

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NEW DELHI-1 10002 *Eastern : l/14 C.I.T. Scheme VII M, V. 1. P. Road,

Maniktola, CALCUTTA 700054 Northern : SC0 445-446, Sector 35-C,

CHANDIGARH 160036

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BANGALORE 550058 Gangotri Complex, 5th Floor, Bhadbhada Road, T. T. Nagar,

BHOPAL 462003 Plot NQ. 82/83, Lewis Road, BHUBANESHWAR 751002 6315, Ward No. 29, R. G. Barua Road, 5th Byelane,

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TRIVANDRUM 695035

lnspectlon Oflce (With Sale Point) : Pushpanjali, 1st Floor, 205-A West High Court Road,

Shankar Nagar Square, NAGPUR 440010 Institution of Engineers ( India ) Building, 1332 Shivaji Nagtar,

PUNE 411005

*Salem OftIce in Calcutta I8 at 5 Chowringhee Approach, P.O. Prlncep Street, Calcutta 700072

fSales Office In Bombay la at Novelty Chamber% Grant Road, Bombay 400007

SSalr~ Offke In Bangalore Is at Unlty BulldIng, Nararlmharaia Square

Telephones

[ 331 01 31 3311375

36 24 99

1 21843 31641

1

41 24 42 412519 41 29 16

6 32 92 95

[ 26348 26349

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66716

5 36 27 3 31 77

231083

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62305

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2 51 71

52435

27 68 00

82 65 28

22 38 H Smngalorr 560002

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