Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“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”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 2405-2 (1980): Industrial Sieves, Part II: PerforatedPlates [CED 55: Sieves, Sieving and other Sizing Methods]

Gr 3

IS : 2405 (Part II) - 1980( Reaffirmed 2008 )

Indian StandardSPECIFICATION FORINDUSTRIAL SIEVES

PART IIPERFORATED PLATES

(First Revision)

First Reprint NOVEMBER 1999

UDC 621.928.2.028.2

BIS 1980

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI l10002

June 1980

IS .2405 ( Part II ) .1980

Indian StandardSPECIFICATION FOR INDUSTRIAL SIEVES

PART II PERFORATED PLATES

( First Revision)

Sieves, Sieving and Other Sizing MethodsSectional Committee, BDa 19

In personal capacity ( Typ,III, No. 749, ]tUlJGluulGlN,hru University Qrls, UltrakJuzntl, NIUJ DtW )

Ministry of Defence ( DOl)

All India Instrument Manufacturen & DealenAssociation ( Bombay Region ), Bombay

Central Water Commission, New Delhi

Hindu.tan Steel Ltd, Ranchi

Standard Wire Products, Bombay

( CMI-.J MIJttI- 2)

Jeetmull Jaichandlall ( P) Ltd, CalcuttaNational Physical Laboratory (CSIR), New

Delhi

CluJimuuaDB M. PANODOLY

A·lS/23. Vasant Vihar, New DelhiRtpr,s",t;ng

All India Wire Netting ManuCacturer. Associa­tion, Bombay

Shalimar Wires at Industries Ltd, 800gblySant S. N. ARORASam S. KUIIAR ( Alt""tJl, )

SDKI M. M. BAHAL Tata-Rcblns-Fraser Ltd,JamsbedpurLT.-CoL C. A. RODRIQUBS ( Altmaat, )

Snnr S. K. BANBBlltB National Test Houle, CalcuttaSunl P. R. DA8 ( Altlf'fttll, )

8nBI R. K. OnotmsnraDB P. O.JAIN

M""Iwr,SRB! P. N. ABORA

Snnr ]. N. Bonua (Allmwl,)DB P. T.JOBM

SHBI A. R. A. KRI811NAlfSHBI B. K. S,NOJI ( Alt"nau )

SUBIJ. MBKDOXCA

SUBI C. P. SOOD ( Allml4t, )SRBI R. V. RARTBJDBVAN

SRBI S. B. SOBI (.Alt,"u,")SBBI K. K. SUOllPrA

SRBI A. K. S.. (AltmIiJI,)SBBIIUaIl11KB C. SHAH

(j)~ 1980

BURBAU OF INDIAN STANDARDS11aJI pabUcatJoa II protected DDd.. the IN" CtJ/!1riI'" ~d (XIV 01 1957) aDdnproducdoD ID wbole 01' ill part by aD, muna except with writteD permlliioD oC thepabll.. aIaaIJ bedeemed to be aD lDfriDlem-t ~ coPyrilbt aDd. the laid Act.

Suut C. P. SOOD

SUIU R. RA:\(A St:lJRAMANJANSUR I II. C. VEU)lA

MtmlJnsS" I:' C. S. SIIAU)I.·\SJlJU C. ~f. P. ~JNJIA

18 I 2405 ( Part U ) • 1_

( Comi..dIrom /Ja" 1 )

R,prls,,,tingCement Corporation of India Ltd, Nc\v nelhiDirectorate General of Technical Development,

New DelhiAll India Instrument Manufacturers & Dealers

Alsociation ( Delhi Region ), DelhiThe Associated Cement Companies Ltd, BombayAssociated Instrument Manufacturers (India)

Pvt Ltd, New DelhiS,IJ:I A. V. S. R. A. SASTRY ( Alt"""u)

Sum D. AJITIlA SIMlIA, Director General, lSI (£X-officiD Mnnbn)Director ( Civ Engg )

S«rllarySHRI SURB8H MALKANI

Assistant Director ( Civ Engg ), lSI

Sieves Subcommittee, BDC 19: 1

COllven"Dn P. C. JAIN National Physical Laboratory (aSIR), New

DelhiMembers

SaRI A. K. BHATTACHARYA Geologist Syndicate Pvt Ltd, CalcuttaSURI H. K. GUDA ( AllmuJU)

SHIt) A. BHACMIK Hein Lehmann ( India) Ltd, BurdwanSlInT R. K. CHOUBARIA J~etmullJaichandlall ( P ) Ltd, Calcutta

SunI R. C. CHouBAnIA (AIUrnat, ) ,SURI A. D. GUPTA The Fertilizer Corporation of India Ltd, Dhanbad

Snur N. S. DANI ( ,Allmaat, )SHRI S. C. GUPTA Central Public Works Department, New DelhiSunt NAVIN MAR'VAH Sieves India, Bombay

Sum MANU MAHWAH ( Allmaat, )DB V. V. SUBDA RAO Cement Research In.titute of India, New DeIhl

SHRI M. V. RANOA RAO ( AllmuU,)SHRI M. R. SONll:JA Central Building Research Institute t RoorkeeSURI GU\J8BJ. TRIVEDI Unique Trading Corporation, Bombay

SHBI BalN J. TnlvBDI (~I""tIt')

2

AMENDMENT NO.1 JUNE 1985TO

IS:2405{Part 2)-1980 SPECIFICATION FORINDUSTRIAL SIEVES

PART 2 PERFORATED PLATES

(Fwst Rev i.eion )

(Fbge 7~ cLause 5.2) - Add the following afterclause 5.2:

'5 0 2 . 1 The maximum value of the corner radius of anysquare hole (r ) is given in millimetres, by the

maxfollowing formula:

r = 0.05 A + 0.30max

where A is the aperture size, inmill imetre s , t

(BDe 19)

Reprography Unit, lSI, New Delhi, India

.1 I 2_5 ( Put n ).1110

Indian StandardSPECIFICATION FOR INDUSTRIAL SIEVES

PART II PERFORATED PLATES

( First Revision)

o. FORE"WORD

0.1 This Indian Standard (Part II) (First Revision) was adopted bythe Indian Standards Institution on 30 January 1980, after the draftfinaJized by the Sieves, Sieving and Other Sizing Methods SectionalCommittee had been approved by the Civil Engineering Division Council.

0.2 Induatrialsieves made of wire cloth as well al of perforated plates arewidely used for grading of stones, in the manufacture of cement andsugar and for a variety of other industrial purposes. These are producedin a number of combinations of size and shape of aperture, wire diameteror plate thickness, and metal. Such variety is most confusing and to thevast majority of users, unnecessary; since each usually requires only a veryfew of these.

0.3 This standard was fint issued in 1963, with a view to cover therequirements of wire cloth and perforated plates having round and squareapertures, in the sizet most commonly used in a number of industries.This revision of the standard hal been prepared in two parts; Part Idealing with wire cloth sieves and Part II dealing with perforated plates,

0.3.1 In this part ( Part II ), R 20 preferred Dumber series for aperturesizes and pitches of hole. as recommended by International Organizationfor Standardization ( ISO 2194 Wire screens and plate screeDl for indu..trIM purposes - Nominal sizes of apertures and ISO Document ISO/TC 24/80 7 N24 ). has been followed. To suit different industrial UICS.. fiveclasses each of round hole and square hole perforated plates have beenspecified which give nominal open areas ranging from 64 percent to23 percent.

0.4 In the formulation of this standard .aistanee baa been drawn CromBS 1669: 1972 Specification for industrial perforated platea, ilsued by theBritilh Standards IDltitutiOD.

3

II I 2eOS ( Put 0 ) • 1980

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

I. SCOPE

1.1 This standard ( Part II) specifies requirements for flat metal indus­trial perforated plates with round or square bole perforations, staggeredpitch.

1.1.1 The ranges of aperture sizes are 125 mm to g·15 mm for roundperforations and 125 mm to 4 mm for square perforations.

2. TERMINOLOGY

2.0 For the purpose of this standard, the following definitions shalla pply.

2.1 Aperture Size ( A ) - The diameter of a round hole or the distancebetween opposite sides of a square hole, measured on the punch side( SI' Fig. 1, 2 and 3 ).

2.2 Bridie Width -- The distance between the nearest edges of twoadjacent holes in a perforated plate, measured on the punch side( se« Fig. 1, 2 and 3 ).

2.3 Margin - The minimum distance between the outside edges of theoutside rows of holes and the edges of a perforated plate.

2.4 Pereeatage OpeD Area ( Screening Area) - The ratio of the totalarea of the apertures to the area of the perforated plate, excluding theunperforated margins, expressed as a percentage.

2.5 Perforated Plate - A plate with uniform holes in symmetricalarrangement, usually formed by punching.

2.6 Pitch (P) - The distance between the centres of adjacent roundholes in a perforated plate, or between the lines of centres of square holeseSI' Fig. I, 2 and 3 ).

2.7 Plate Thlckne•• - The thickness of the plate before perforation.

2.8 Paach Side - The surface of the perforated plate which the punchentered during the perforating operation.

• Rules Cor rounding ofT numerical values ('IV;S,tl).

4

18 I 2405 ( Part U ) • 1980

APERTURESIZE (A)

BRIOGEWIDTH

w

lc~

0-

IL0

W~

C)

...... 0:c wu

"t-

iL z0~

f

Flo. 1 ROUND HOLa PBRPORATIONS 60~ STAGGERED PITCH

1812405 (Put 0)-1_

Flo. 2 SQ,UARB HOLB PSRFORATIONS: STAOOERED PITCH

3. DESIGNATION or PERFORATED PLATES

3.1 Industrial perforated plates shall be designated by:

a) aperture size and shape,b) pitch and arrangement of apertures,c) plate thickness, andd) material of the plate.

f. MATERIAL AND PLATE THICKNESS

4.1 Industrial perforated plates shall be made of mild steel conforming toIS : 226·1975* or any other suitable metal. .

f.2 The ranges of thickness for mild steel industrial perforated plates aregiven in Table I., The thickness for plates of metal other than mild steelmay vary from those given in Table 1.

·Specification Cor Itructural Itee1 ( ItaDdard quality) (fi/l" ,lIJisi,II ).

6

IS ,2405 ( Part II ) .1910

PITCH

f~'

1 rBRIOUEWIQTH

I APERTURE .-..-_..-.......~ (A)I.

Flo.3 SQ,UARE HOLE P.ERFORATIONS: IN-LINE ARRANOEMENT

5. APERTURES AND PITCHES

5.1 Shape.ac1 ArraalellleDt 4)fAperture. - Shape and arrangementof apertures shall be as shown in Fig. 1 to' 3. Figure 1 shows the usualround hole arrangement of 600 staggered apertures with respect to thelong edge of the plate. Figure 2 shows square hole apertures -sta~eredat half the pitch. Figure 3 showl the square hole apertures placed • In-linearrangement ••

5.2 Aperture Sbe ~ The nominal sizes of round or square holes inindustrial plate screens shall be as given in Table 2. .

5.3 PitCh - The ratio of the nominal pitch to the nominal aperture sizeshould be taken from the five options:

1-25, 1-4, 1-6, I·S, 2-0

The five pitch/aperture ratios give five open areas for round as wellas square holesaa indicated in Table 2. The nominal pitches to give thefive open areas for each aperture size are also listed in Table 2.

... ell

TA

BL

E1

IlA

NG

EO

FP

LA

TE

TB

lCK

NE

SS

I'O

RV

AR

IOU

SA

PE

IlT

lJ1l

ES

JZB

RA

NG

ES

AN

Dp

iTC

B/A

PE

RT

VB

.EIl

AT

lOS

(a

..4

_2

)

S-15

to25

3-15

to25

S-IS

to25

3-15

to25

3-15

to25

2-5

JJ20

2-5

,t20

2-5

,,2

02-

5,,

20

2-5

,,2

0

1-6

..is

1-6

"16

1-6

u16

1-6

II

161-

6,,

16

1-6

It

91-

6"

11-2

1-6

,.12

-51-

6It

12-5

1-6

It12

-5

1-6

"6

1-6

JJ

7-1

1-~

..9

1-6

,t10

1-6

,,1

0

1-25

n4

1·2

5"

51-

25II

61-

25"

711

-25

"8

1-25

"3

1-25

"3-

61-

25JJ

f1

-25

"f

1-25

~3

1-2

5"

S

All

dim

enai

OA

liu

mil

lim

etre

a.i 1:1~

• iN ! ~

2i-a

1-6

.1-4

1-25

PlT

cB'

·AP

a'-'

11

BB

R.A~lo

<,

MD

nJB

-SI

S.ltA

JIo

a

--

00

125

dow

Dto

100

Bel

ow10

0do

wn

to63

II·

63"

"40

"40

""

20

"20

".,

12-5

't12

-5"

I'a

"8

I'I,

5

It

5u

"S·

15

IS 12405 ( Part II ) .1980

5.4 ToleraDee - The tolerances on measured average aperture andmeasured average pitch from nominal aperture size and nominal pitchrespectively are given in Table 2.

5.f.1 The tolerances on measured size of any individual aperture orpitch are also given in Table 2.

6. MARKING

&.1 The perforated plates shall have a permanently attached label onwhich the following information shall be marked:

a) Aperture size;

b) Aperture shape;c) Pitch;d) Aperture arrangement ( see Fig. 1, 2 and 3 );e) Plate thickness;

f) Material of plate;

g) Overall dimensions of plate;

h) Particulars of margin, if required;j) Fixing arrangements for plate; and

k) Any special requirements.

NOTR - This standard refers to flat perforated plates. Requirements for curvedplates should bo agreed between the purchaser anti the manufacturer.

6.1.1 The product may also be marked with Standard mark.

6.1.2 The use of the Standard Mark is governed by the provisions of theBureau of Indian Standards Act, 1986 and the Rules and Regulations madethereunder. Tbe details of conditions underwhich the licence for the use ofStandard Mark may be gnnted to manufacturers or producers may be obtainedfrom the Burelu of Indian Standards.

7. METHOD OF EXAMINATION OF PERFORATED PLATES

7.1 Measurement of pitch and aperture size shall be made at the punchside of the plate.

9

TA

BL

E2

PR

EF

ER

RE

DP

ITC

H.A

PE

RT

UR

EC

OM

BIN

AT

ION

SF

Oil

RO

UN

DH

OL

ES

AT

600

ST

AG

GE

RA

ND

SQ

UA

RE

HO

LE

SIN

INI)

US

TR

LU

.P

ER

PO

RA

TE

DP

lAT

ES

(ClI

IIU

U5_

2,5.

3an

d5

.4)

All

dim

ensi

on

sin

mil

lim

etre

s.

PIT

CB

/Ap

JmT

UB

BR

AT

IO

1·25

1·4

1·6

1·8

2·0

A,p

PR

OX

OP

EN

AR

EA

RoU

ft:l

Hol

es

58°'

46%

35

%2

8%

23

%10

Squa

reH

oles

G4~J~

51~~

390k

31

%25

%

Ap

ZK

TU

RB

PIT

CH

TO

LB

BA

KC

ZO

N'

PIT

CH

.---"-.

\r-

---A

.-~

t-..

A-_

__

_~

...N

om

inal

Av

erag

eIn

divi

dual

Ave

rage

Indi

'\'"i

dual

0Si

zeT

ole

ran

ceT

ole

ran

ce(l

l10

Seri

ea)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

125

3-0

6-0

155

---

--

4-8

9·6

112

2-7

5-4-

140

--

--

4-4-

8-&

100

2-5

5·0

125

--

--

4-0

8-0

902-

34-

611

0-

--

-3-

77-

4

802-

14-

210

0-

--

-3-

46·

&

711

·9a-

a88

100

--

-3-

16·

2

6S1-

73·

...78

88lO

O-

-2-

&5·

656

1-5

3-0

7078

90-

-2-

5S·

O50

1·...

2·8

6370

80-

-2-

54-

6

451-

32-

656

6S72

--

2-1

4-2

401-

22·

...50

5664

--

-1-

9s-

&

... • - N S '" r =-.... • ... I

35-5

I-I

2-2

44SO

57-

-1-

73-

4-31

-51-

02

·040

44-

50-

-1-

63-

228

0-9

i-a95

3945

--

1-4-

2·8

250-

811

>32

3540

--

1-3

2-6

22-'

0-7

1-.28

3236

--

1-2

2-4-

200-

6)-

225

2832

--

I-I

2·2

180-

61-

22

2-5

2528

--

1-0

2-0

16o-

sJ-

O20

22-5

26-

-0-

91-

8It

0-4-

O·g

17-5

19-5

22

·5-

-0

-81-

612

-50

·.0-

815

-75

17·5

20-2

2-5

-0-

751-

511

-20-

40-

814

15-7

518

20-

0-65

1·3

10&

350-

7-1

2·5

14-

1618

-0-

61-

29

0-3

0-6

-11-

2512

-514

-16

-5-

0-55

I-I

80-

30-

6-1

011

-25

12-5

14-

-16

0-5

1·0

...7-

10-

250

·5•

S·75

1011

-25

12

·5-1

4-0

·45

0-9

....0

-25

0-5

t8-

7510

11-2

5-1

2-5

0·4

0-8

6-3

-5-

60-

20

·4-

-•

010

11-2

50-

360-

72

50-

20·

4--

-•

89

100-

330-

664

·50-

150·

3-

-•

77-

59

0-30

0·60

...0-

150-

3•

67

7·5

0-27

0-54

•f

--

-3·

550-

150·

3-

--

5-25

-6·2

57

0-25

0·50

N

g-15

0-15

0·3

--

•5

-5-2

56-

250-

220-

44•CIt --- I

-Fo

rro

un

dp

erfo

rati

on

son

ly_

=.-..... •tF

or

lQua

rep

erfo

rati

on

so

nly

,... I

18 I 2405( Put D ) • 1980

7.2 The number of apertures or pitches measured in order to arrive at anaverage may vary according to the number of perforations in the plate.A minimum sample N of apertures or pitches may be chosen using theexpression:

N := 2 + (100/.4 )

where

A == aperture size in millimetres, a proper fraction being takenas an integer.

8.8AMPUNG

8.1 Lot - All the perforated plates of the same class, same nominalaperture I manufactured from plates of same thickness and lame cast, underidentical conditions of manufacture, shall be grouped together to consti­tute a lot.

8.2 Each lot shall be taken up separately for determining conformity tothe requirements of this specification. For this purpose samples shall betaken depending upon the size of the lot in accordance with 8.2.1.

8.2.1 The number of sample perforated plates CroJD a lot shall be inaccordance with Level IV of Table 1 of IS : 2500 (Part I )-1973- andTable 2 of IS : 2500 ( Part I )-1973-.

83 All the sample perforated plates selected in 8.2.1 shall be il\spectedfor all the requirements of this specification. Any sample perforated platefailing in anyone or more of the requirements sbal! be termed asdefective. Based on the number of defective sample perforated plate.the criterion to determine the conformity or otherwise of the lot to therequirements of this specification shall be in accordance with AQ,L of2·5 percent in l"able 2 of IS : 2500 ( Part I )-1973-.

·SampUDJ lupecdoa tabl.: Part I IDIpectioa by attrlbut. uad by COUIlt ordelecu(JIll"").

12

BUREAU OF INDIANSTANDARDS

He.dqu."f117:.Manak Bhavan,9 BahadurShah Zafar Marg, NEW DELHI 1'10002Telephon••: 323 0131, 323 3375. 323 9402 Fax:+ 91 011 3234062, 3239399, 3239382E • mall: bis@VSnl.com. Internet: http://wwwdel.vsnl.nelinlbla.org

Cen"'" ...bonItory :

Plot No.2019, Site IV, Sahibabad Industrial Are.. Sahibabad 201010

ReglonM OMe..:

Central: Manak Bhavan, 9 Bahadur Shah lafar Marg. NEW DELHI 110002

*Eastem : 1/14 CIT SchemeVII,V.I.P. Road, Kankurgachi, CALCUTIA700054

Northern: SCQ 335-336. Sector34-A, CHANOIGARH 160022

Southern: C.I.T. Campus, IV Cross Road, CHENNAI600113

fWestem : Manakalaya, ES, MIDC.BehindMarolTelephone Exchange,Andherl (East), MUMBAI 400093

Sr.-nch Off/e..:

·Pushpak'. NurmohamedShaikh Marg,Khanpur, AHMEDABAD380001

*Peenya Indus1rfal Area, 1st Stage, Bangalore-Tumkur Road,BANGAlORE 560058

Telephone

n0032

323 76 17

3378662

603843

235 2~ 15

832 92 95

550 1348

8394955

',...

723452

3221 04

403827

21 01 41

288801

711998

5411 37

320 1084

373879

21 6876

Road, 21 89 2~f'

5~ 51,71

'282808

323635

368586

Commercial-cum-Offloe Complex,Opp. Oushera Maldan, E-5 Arer. Colony,Bittan~ket, BHOPAL462016

62/63, Ganga Nagar, Unit VI, BHUBANESWAR 751001

Kalal KathirBuilding, 670 Avinashi Road,COIMBATORE 641018

Plot No. 43. Sector 16 A, Mathur. Road, FARIDABAO 121001

SavftriComplex, 116 G.T. Road, GHAZIABAD201001

53/5 Ward No.29, R.G. BaruaRoad, 5th By-lane. GUWAHATI781003

5-8-56C,L.N. Gupta M_g, NampallyStation Road. HYOERABAD 500001

E-52, ChitranjanMarg. C- Scheme, JAIPUR 302001

117/418B, Sarvodaya Nagar, KANPUR208005

Seth Shawa", 2nd Floor, Behind Leela Cinema, Navel KishoreLUCKNOW226001

NIT Building,Second Floor, GokulpatMMcet,NAGPUR440010

Patliputralndus1rial Estate, PATNA 800013 . ;1'\

Institutionof engineers (India) Building,1332 Shfvaji Nagar. PUNE~~'-sahajanand Houae' 3RtFloor, Bh8ktinager CMcIe. 80 FeetRoad,

RAJKOT 36OO(Yl

T.C. No. 14/1421, U'WersIty P. O. PaIay.", THIRlNANANll-tAPURAM 695034

·5ale. Office Is at 5 Chowringh.. Approach, P.O. Princep Street,CALCUTTA700072

tS OffIce• at NoveltyChambers,Grant Road. MUMBAI400007

*S OfficeIs at apBlock, UnityBuilding,Naruhlmaraja Square,BANGALORE 560002

271085

309 65 28

222 39 71

ReprographyUnit,BlS, New Delhi, India