1. POSCO Standard

POSTEN High Strength Steel for Welded Structure   PILAC-BT33/36 TMCP High Strength Steel for Buildings   POSMOLD Steel for Molding   POS AR 320/360/400 Wear Resistant Steel Plates

2. KS Standard

D3503-1993 Steel for General Structure   D3515-1992 Steel for Welded Structure   D3521-1991 Steel for Pressure Vessels   D3539-1990 Quenched and Tempered Mn-Ni Steel and Mn-Mo-Ni Steel Plates for Pressure Vessels   D3560-1992 Carbon Steel and Mo Steel Plates for Boilers and Pressure Vessels   D3586-1992 Ni Steel Plates for Low Temperature Pressure Vessels   D3752-1986 Carbon Steel for Machinery

3. API Standard

API2H Steel for Offshore Structures

4. ASTM Standard

A 36-93 Steel for Welded Structure   A 131-93 Steel Plates for Ships/High Strength Steel for Ships   A 242-93 High-Strength Low-Alloy Structural Steel Plates   A 283-93 Low and Medium Strength Carbon Steel   A 285/A 285M-90 Low and Medium Strength Carbon Steel for Pressure Vessels   A 514-93 High-Strength Low-Alloy QT Steel for Welded Structure   A 515/A 515M-92 Carbon Steel for Low and High Temperature Pressure Vessels   A 516/A 516M-90 Carbon Steel for Room Temperature and Low Temperature   A 537/A 537M-91 Heat Treated C-Mn-Si Steel Plates   A 572-93 High-Strength Low-Alloy Nb-V Steel Plates for Welded Structure   A 573-89 Structural Carbon Steel Plate of Improved Toughness   A 588-93 High-Strength Low-Alloy Structural Steel Plates   A 633-93 Normalized High-Strength Low-Alloy Structural Steel Plates

5. BS Standard

BS 4360-1986 Steel for Welded Structure

6. DIN Standard

DIN 17100-1986 Steel for General Structural Purposes   DIN 17155-1986 Steel Plates for Boilers

7. JIS Standard

G 3101-1987 Steel for General Structure   G 3103-1987 Carbon Steel and Mn Alloy Steel Plates for Boilers and Pressure Vessels   G 3106-1992 Steel for Welded Structure   G 3114-1988 Atmospheric Corrosion Resistant Steel for Welded Structure   G 3115-1990 Steel Plates for Medium and Low Temperature Pressure Vessels   G 3126-1990 Steel Plates for Low Temperature Pressure Vessels   G 3136-1994 Rolled Steel for Building Structure   G 4051-1979 Carbon Steel for Machinery

8. SAE Standard

SAE J 403-1984 Structural Carbon Steel Plates