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Steel Plate Business area

Introducing the steel Plate business of Dongwon Special Steel Co., Ltd.

The whole staff at Dongwon Special Steel Co., Ltd.
will continue as the best steel distributor through relentless research and
development and quality innovation, to contribute to development of the society,
based on your attention and affection.


New demand of high quality steel plates is being created as a result of the development of energy resources in gas and oil fields and wind power plants.

후판산업

Steel plates are used as main materials in petrochemistry, LNG, desalination facilities, nuclear power plants, shipbuilding and construction accounting for about 10 percent of global steel demand.
n addition, the nation's supply of steel plates is considerably low in comparison to domestic demand because of the new demand creation of steel plates as a result of the development of energy resources. Consequently, major domestic steel makers are establishing new steel plate works.

Steel Plates means thick steel sheet. It is usually 6mm thick and used for shipbuilding. It is widely used for bridge construction and various industrial machinery.
Dongkuk Steel gained classification standard from a classification society of ten developed countries including Japan and the United States. The steel plates are widely used for shipbuilding, general structure, welding construction, boiler and pressure container, machinery structure according to the material.

Main uses of stainless steel plates

  • Large buildings

  • Boiler and
    pressure container

  • Shipbuilding

  • Machine structure

  • Marine plant
Huge buildings

The steel plate is widely used for bridges, construction, and steel structures, and its use is increasing because of growing size and height of buildings.

구조용 후판
Standard no Types and classes
KS D3503/JIS G3101 SS400, SS490
KS D3515, JIS G3106 SM400A, SM400B, SM400C, SM490A, SM490B, SM490C, SM490YA, SM490YB, SM520B, SM520C, SM570
KS D3868 HSB500, HSB500L, HSB600, HSB600L
JIS G 3136 SN400A, SN400B, SN400C, SN490B, SN490C
ASTM A36, A283, A572, A573, A709
ASME SA36, SA283, SA516
BS 4360 43A, 50A, 50B, 50C
EN 10025 S235JR, S235JO, S235J2, S275JR, S275JO, S275J2, S355JR, S355JO, S355J2, S275N, S275NL, S355N, S355NL, S275M, S275ML, S355M, S355ML, S355K2, S355N, S355NL, S420M, S420ML, S420N, S420NL, S460M, S460ML
DIN 17100 ST 44-2, ST 44-3, ST 52-3, ST 50-2
CSA 300W, 350W, 380W
AS 3678 GR250, GR300, GR350, GR400
BS 4360 40A, 40B, 40C, 40D, 43A, 43B, 43C, 43D, 50A, 50B, 50C, 50D
boiler and pressure container

With development of the energy industry, the demand for steel pipes for pipelines and oil wells is increasing. In addition, steel pipes are used for pipes, structures, steel pipe piles, boilers, and heat exchangers.

보일러 및 압력용기용 후판
Standard no Types and classes
ASTM/ASME A285, A516
JIS G 3103 SB410, SB450, SB480
JIS G 3115 SPV235, SPV315, SPV355, SPV410
shipbuilding
조선용 후판 종류
Steel Classification society
Ship classification general steel : A,B,D,E.
Ship classification High Strengthen steel : AH32, DH32, AH36, DH36, EH32, EH36, AH40, DH40, EH40
KR, NK, ABS, GL, LR, DNV, RINA, BV, CCS, RS
pressure container
기계구조용 후판
Standard no. Types and classes
KS D3752 SM45C
JIS G4051 S45C
SAE J 403 1045
Marine plant

The shipping / offshore mooring steel pipe and steel sheet are used for Resources (Oil & Gas) Exploration, development, drilling, production, storage and transportation

해양플랜트용 후판 종류
Standards sign 3자 인증기관
EN-10225 S355G2+N ABS, DNV
S355G3+N ABS, DNV
S355G5+M ABS, DNV
S355G6+M ABS, DNV
S355G7+M ABS, DNV
S355G8+M ABS, DNV
S355G9+M ABS, DNV
S355G10+M ABS, DNV
S420G1+M ABS, DNV
S420G2+M ABS, DNV
S460G1+M ABS
S460G2+M ABS
Norsok M-120 Y05 DNV
Y20 DNV
Y30 DNV
Y40 DNV
API API 2W-50 ABS, DNV, BV
API 2W-60 ABS, DNV
API 2H-42 -
API 2H-50 -
DNV OS B101 A/D/E420, DW/EW420 DNV
Total S355KT/KL+20 -
S355KT/KL0 -
S355KT/KL-20 -
S355KT/KL-40 -