http://www.handu.co.kr

23-201, JoongAng Steel Complex, 46, Siheung-daero,

Geumcheon-gu, Seoul, 08654, Korea

TEL +82-2-895-3073 FAX +82-2-808-1172

Business Part (info@handu.co.kr)

Automotive & Mechanical Uses

GLOBAL NO.1

HANDU STEELCOLD DRAWN STEEL TUBE

Since the establishment in 1993, Handu Steel Co., Ltd.

came to stand up as a company recognized for top quality

brand not only domestically but also in overseas by

steadily devoting itself to cold drawn tube production for

automobile and machine structural use.

By direct supply of with steel mills like POSCO and HYUNDAI

STEEL, We've secured the best quality and competitiveness

with synergy effect through total production system in

materials pipes to cold drawn tube production and post

component processing with systematic operation.

In Jinju Ibanseong Plant, where we produce our own

materials pipes.

Dangjin and Sabong Plant have 60,000 ton's capacity for

cold drawn tube production per year and we have another

processing facilities for automative parts.

Therefore, we will do our best to secure high quality for

precision cold drawn tubes, low cost basis and delivery

assurance and become the best cold drawn tube company

in the world.

Thank you.

GREETING

HANDU STEELAutomotive & Mechanical Uses

CONTENTS

GREETING

HISTORY

BUSINESS FIELDS

APPLICATIONS

ERW PLANT

COLD DRAWN TUBE PLANT

POST PROCESSING FOR AUTOMOTIVE PARTS

GLOBAL NETWORKS

03

04

06

08

10

12

16

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ERW TubeCold Drawn Steel Tube

HISTORY

201709. Root-tech specialized company

(By government)

11. Established R&D center

201802. Acquired IATF 16949 Certification

10. Good root tech company

(By government)

201904. Global small-giant enterprise

(By government)

12. Annual export of 10milion USD

199303. Established Handu Steel co., Ltd.

04. Agency of Hyundai Steel Co., Ltd.

199604. Established Dangjin Cold Drawn Tube

Plant

200012. Acquired QS9000/ ISO9002 Quality

Management

1993~2000

201112. Produced 30,000 tons of cold drawn tube

production per year at Dangjin Plant

201501. Established Jinju Sabong Cold Drawn Tube Plant

· Extension of ERW Plant Capability

· Production Capability 108,000ton Per Year

(Cold Drawn Tube 60,000ton ERW 48,000ton)

07. Acquired JIS G3445 Certificate in ERW

2016�05. Specialized Materials and Components company

(By government)

2011~2016

2017~2019

200511. Awarded presidential citation

200606. Established Jinju Ibanseong

ERW Plant

200704. Acquired TS/ISO 16949

Certification

2001~2010

INTRODUCTION OF THE COMPANY

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Cold drawn tube production manufacturer,

Handu Steel Co., Ltd., provides top competitiveness

and best possible service to the customers

by building Total System,

from the best quality pipe material production

to precise cold drawn steel pipe production and

Post processing parts for automotive, through direct

supply of drawing exclusive materials

from steel mills like POSCO and HYUNDAI STEEL.

Capacity(Yearly)

ERW

Cold DrawnTube

Post Processing

0 10,000 20,000 30,000 40,000 50,000 60,000 70,000

48,000tons

60,000tons

12,000tons

80,000(tons)

BUSINESS FIELDSH

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STEEL

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ERW�pipe�production�

Post�processing�for�automotive�parts

Precise�cold�drawn�tube�production�

Total Production

System

HANDU STEEL INTRODUCTION VIDEO

Hydraulic Coupler

Furniture Cylinder TubeBobbin

Safety Belt Tube

Refrigerant Body

Cam ShaftBush

Cylinder Tube

Propeller Shaft

APPLICATIONSH

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APPLICATIONS

Automotive parts

Shock absorber

Rack tube

Steering Tube

Hydraulic Cylinder Tube

Boiler TubeHeat Exchanger Tube

Heat Exchanger Tube

Others

PIPE's external diameter Thickness

1.6 2.0 2.9 3.5 4.0 5.0 5.5 6.0 6.5 6.8

Ø 21.7

Ø 25.4

Ø 27.2

Ø 31.8

Ø 34.0

Ø 38.1

Ø 41.5

Ø 42.7

Ø 48.6

Ø 54.0

Ø 60.5

Ø 70.0

Ø 74.6

Ø 76.3

Ø 89.1

Range

KS D 3598

Type Code

Chemical Composition (%) Tensile Test Flaring Test Flattening Test Bend Test

C Si Mn P S

TensileStrength

N/㎟(㎏/㎟)

Yield Pointand Yield Strength

N/㎟n(㎏/㎟)

Elongation(%)Test Piece 11Test Piece 12Longitudinal

Size after Pressed

and Flattened(D is the

outer radius of a pipe)

Distance from the

Plane Table (H)(D is the

outer radius of a pipe)

BendAngle

InternalRadius(D is the

outerradius of a pipe)

G

STAM 290GA0.12↓ 0.35↓ 0.60↓ 0.035↓ 0.035↓

294↑(30↑) 177↑(18↑) 40↑ 1.25D ½D 180。 4D

STAM 290GB 294↑(30↑) 177↑(18↑) 40↑ 1.25D ½D 180。 4D

STAM 340G 0.20↓ 0.35↓ 0.60↓ 0.035↓ 0.035↓ 343↑(35↑) 196↑(20↑) 35↑ 1.20D ⅔D 90。 6D

STAM 390G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 392↑(40↑) 235↑(24↑) 30↑ 1.20D ⅔D 90。 6D

STAM 440G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 441↑(45↑) 304↑(31↑) 25↑ 1.15D ¾D 90。 6D

STAM 470G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 471↑(485↑) 324↑(33↑) 22↑ 1.15D ¾D 90。 8D

STAM 500G 0.30↓ 0.35↓ 0.30 ~ 1.00 0.035↓ 0.035↓ 500↑(51↑) 353↑(36↑) 18↑ 1.15D ⅞D 90。 8D

H

STAM 440H 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 441↑(45↑) 353↑(36↑) 20↑ 1.15D

STAM 470H 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 471↑(48↑) 412↑(42↑) 18↑ 1.10D

STAM 500H 0.30↓ 0.35↓ 0.30 ~ 1.10 0.035↓ 0.035↓ 500↑(51↑) 431↑(44↑) 16↑ 1.10D

STAM 540H 0.30↓ 0.35↓ 0.30 ~ 1.10 0.035↓ 0.035↓ 539↑(55↑) 481↑(49↑) 13↑ 1.05D

Electric Resistance Welded Carbon Steel Tubes for Automobile Structural Purposes

Products 1 Tubes for Machine Structual Purposes2 Mother Tube of Cold Drawing3 Tubes for General Structual Purposes

ERW PLANT

Jinju Ibanseong Plant

ERW TUBE PRODUCTION

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Process

Produced good tubesChecked defectivesIn-outside bead removing

Coil SkelpSlitting End facing E.C.TProduced good tubes PackingUncoiling Leveling Forming Welding Water cooling Sizing Cut off Checked defectives

COLD DRAWNTUBE PLANT

Dangjin Plant

COLD DRAWN TUBE PRODUCTION

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Process

Mother tube Eddy Current Test and Check DeliveryCuttingStraighteningCold drawingSurface treatmentPointingHeat treatment

Jinju Sabong Plant

Certificate

IATF 16949 ISO 9001 JIS G3445 KS D3517

COLD DRAWN TUBE PRODUCTION

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American Society for Testing Materials

Type CodeChemical Composition (%)

C Si Mn P S

ASTM

A 513

MT 1010 0.05 ~ 0.15 - 0.30 ~ 0.60 0.035↓ 0.035↓

MT 1015 0.10 ~ 0.20 - 0.30 ~ 0.60 0.035↓ 0.035↓

MTX 1015 0.10 ~ 0.20 - 0.60 ~ 0.90 0.035↓ 0.035↓

MT 1020 0.15 ~ 0.25 - 0.30 ~ 0.60 0.035↓ 0.035↓

MTX 1020 0.15 ~ 0.25 - 0.70 ~ 1.00 0.035↓ 0.035↓

1008 0.10↓ - 0.50↓ 0.035↓ 0.035↓

1010 0.08 ~ 0.13 - 0.30 ~ 0.60 0.035↓ 0.035↓

1012 0.10 ~ 0.15 - 0.30 ~ 0.60 0.035↓ 0.035↓

1015 0.12 ~ 0.18 - 0.30 ~ 0.60 0.035↓ 0.035↓

1016 0.12 ~ 0.18 - 0.60 ~ 0.90 0.035↓ 0.035↓

1017 0.14 ~ 0.20 - 0.30 ~ 0.60 0.035↓ 0.035↓

1018 0.14 ~ 0.20 - 0.60 ~ 0.90 0.035↓ 0.035↓

1019 0.14 ~ 0.20 - 0.70 ~ 1.00 0.035↓ 0.035↓

1020 0.17 ~ 0.23 - 0.30 ~ 0.60 0.035↓ 0.035↓

1021 0.17 ~ 0.23 - 0.60 ~ 0.90 0.035↓ 0.035↓

1022 0.17 ~ 0.23 - 0.70 ~ 1.00 0.035↓ 0.035↓

1023 0.19 ~ 0.25 - 0.30 ~ 0.60 0.035↓ 0.035↓

1024 0.18 ~ 0.25 - 1.30 ~ 1.65 0.035↓ 0.035↓

1025 0.22 ~ 0.28 - 0.30 ~ 0.60 0.035↓ 0.035↓

1026 0.22 ~ 0.28 - 0.60 ~ 0.90 0.035↓ 0.035↓

1030 0.27 ~ 0.34 - 0.60 ~ 0.90 0.035↓ 0.035↓

1035 0.31 ~ 0.38 - 0.60 ~ 0.90 0.035↓ 0.035↓

1040 0.36 ~ 0.44 - 0.60 ~ 0.90 0.040↓ 0.050↓

Grade

Tensile Strength Yield Strength Elongation Rockwell Hardness

WeldedPipe

NormalizingPipe

SDPipe

WeldedPipe

NormalizingPipe

SDPipe

WeldedPipe

NormalizingPipe

SDPipe

WeldedPipe

NormalizingPipe

SDPipe

1008 290 262 331 207 159 262 15 30 8 50↑ 65↓ 65↓

1010 310 276 345 221 172 276 15 30 8 50↑ 65↓ 65↓

1015 331 310 379 241 207 310 15 30 8 58↑ 70↓ 67↑

1020 359 345 414 262 241 345 12 25 8 62↑ 75↓ 70↑

1021 372 345 428 276 241 359 12 25 7 62↑ 78↓ 70↑

1025 386 379 448 276 255 379 12 25 7 65↑ 80↓ 72↑

1026 427 414 483 310 276 379 12 25 7 68↑ 85↓ 77↑

1030 427 414 483 310 276 427 10 25 7 70↑ 85↓ 78↑

1035 455 448 552 345 310 483 10 20 7 75↑ 88↓ 82↑

1040 645 448 - 345 310 - 10 20 - 75↑ 90↓ -

MD Pipe MD Pipe + SR Pipe MD Pipe MD Pipe + SR Pipe MD Pipe MD Pipe + SR Pipe MD Pipe MD Pipe + SR Pipe

1008 414 379 345 310 5 12 73↑ 68↑

1010 414 379 345 310 5 12 73↑ 68↑

1015 448 414 379 345 5 12 77↑ 72↑

1020 483 448 414 379 5 10 80↑ 75↑

1021 496 469 427 40 5 10 80↑ 75↑

1025 517 483 448 414 5 10 82↑ 77↑

1026 552 517 483 448 5 10 85↑ 80↑

1030 586 552 517 483 5 10 87↑ 81↑

1035 621 586 552 517 5 10 90↑ 85↑

1040 621 586 552 517 5 10 90↑ 85↑

Type Code

Chemical Composition (%) Tensile Test Bend Test Flattening

Test

C Si Mn P STensile Strength Yield Point Elongation (%) Bend

Angle Diameter HN/㎟(㎏/㎟) N/㎟(㎏/㎟) 4,11,12 4,5

11 A STKM11A 0.12 ↓ 0.35 ↓ 0.60 ↓ 0.040 ↓ 0.040 ↓ 290↑(30↑) - 35↑ 30↑ 180。 4D ½D

12

A STKM12A

0.20 ↓ 0.35 ↓ 0.60 ↓ 0.040 ↓ 0.040 ↓

340↑(35↑) 175↑(18↑) 35↑ 30↑ 90。 6D ⅔D

B STKM12B 390↑(40↑) 275↑(28↑) 25↑ 20↑ 90。 6D ⅔D

C STKM12C 470↑(48↑) 355↑(36↑) 20↑ 15↑ - - -

13

A STKM13A

0.25 ↓ 0.35 ↓0.3 ~0.9

0.040 ↓ 0.040 ↓

370↑(38↑) 215↑(22↑) 30↑ 25↑ 90。 6D ⅔D

B STKM13B 440↑(45↑) 305↑(31↑) 20↑ 15↑ 90。 6D ¾D

C STKM13C 510↑(52↑) 380↑(39↑) 15↑ 10↑ - - -

14

A STKM14A

0.30 ↓ 0.35 ↓0.3 ~1.0

0.040 ↓ 0.040 ↓

410↑(42↑) 245↑(25↑) 25↑ 20↑ 90。 6D ¾D

B STKM14B 500↑(51↑) 355↑(36↑) 15↑ 10↑ 90。 8D ⅞D

C STKM14C 550↑(56↑) 410↑(42↑) 15↑ 10↑ － - -

15A STKM15A 0.25 ~

0.350.35 ↓

0.3 ~1.0

0.040 ↓ 0.040 ↓470↑(48↑) 275↑(28↑) 22↑ 17↑ 90。 6D ¾D

C STKM15C 580↑(59↑) 430↑(44↑) 12↑ 7↑ － － -

16A STKM16A 0.35 ~

0.450.40↓

0.40 ~1.00

0.040 ↓ 0.040 ↓510↑(52↑) 325↑(33↑) 20↑ 15↑ 90。 8D ⅞D

C STKM16C 620↑(63↑) 460↑(47↑) 12↑ 7↑ － － -

17A STKM17A 0.45 ~

0.550.40↓

0.40 ~1.00

0.040 ↓ 0.040 ↓550↑(56↑) 345↑(35↑) 20↑ 15↑ 90。 8D ⅞D

C STKM17C 650↑(68↑) 480↑(40↑) 10↑ 5↑ － － －

18

A STKM18A

0.18↓ 0.55↓ 1.50↓ 0.040 ↓ 0.040 ↓

440↑(45↑) 275↑(28↑) 25↑ 20↑ 90。 6D ⅞D

B STKM18B 490↑(50↑) 315↑(32↑) 23↑ 18↑ 90。 8D ⅞D

C STKM18C 510↑(52↑) 380↑(39↑) 15↑ 10↑ － － －

19A STKM19A

0.25↓ 0.55↓ 1.50↓ 0.040 ↓ 0.040 ↓490↑(50↑) 315↑(32↑) 23↑ 18↑ 90。 6D ⅞D

C STKM19C 550↑(56↑) 410↑(42↑) 15↑ 10↑ － － －

20 A STKM20A 0.25↓ 0.55↓ 1.60↓ 0.040 ↓ 0.040 ↓ 540↑(55↑) 390↑(40↑) 23↑ 18↑ 90。 6D ⅞D

KS D 3517 / JIS G3445

Type Number 1 2 3 4 5 6

Code Letters A.W.H.R A.W.C.R S.D.H.R S.D.C.R M.D S.S.I.D

Carbon Steel Tubes for Machine Structural Purposes R&D Center

Cutt off Chamfering Inspection Packing / Delivery

Processing Equipment

Process

POST PROCESSING FOR AUTOMOTIVE PARTS

POST PROCESSING FOR AUTOMOTIVE PARTS

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Products

Cutting

Press

R cutting

Chamfering

GLOBALNETWORKS

JAPAN

TAIWAN

CHINA

ITALIA

THAILAND

MALAYSIA

INDONESIA

VIETNAM

POLANDHANDUSTEEL

Sketch Map

Head�office

23-201, JoongAng Steel Complex, 46, Siheung-daero, Geumcheon-gu, Seoul, 08654, KoreaTEL +82-2-895-3073 Business Part (info@handu.co.kr)

Jinju�Sabong�Plant(Cold�Drawn�Tube)�

42, Saneopdanji-ro 44beon-gil Sabong-myeon, Jinju-si, 52611, Gyeongsangnam-do, KoreaTEL +82-55-761-7801

Jinju�Ibanseong�Plant(ERW)

49, Jinma-daero 2498 Beon-gil, Ibanseong-myeon, Jinju-si, 52615, Gyeongsangnam-do, KoreaTEL +82-55-757-8911

Dangjin�Plant(Cold�Drawn�Tube)

15-132, Jobisil-gil, Songak-eup, Dangjin-si,Chungcheongnam-do, 31735, KoreaTEL +82-41-363-5100

Dangjin Plant

Jinju Sabong Plant

Jinju Ibanseong Plant

Head office

GLOBAL NETWORKS

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AMERICA

CANADA

BRAZIL

Global�No.1Handu steel company is trying our best again

today with the goal of becoming 'Global No.1, the

best company in the cold drawing industry!'