Product quality Grades Chinese standard EN standard USA standard Japan standard Range of Application
Structural steel(S) S220GD GB 2518 DIN EN 10147 ASTM A653 JIS G3302 Construction
S250GD
S280GD
S320GD
S350GD
Commercial quality(CQ) DX51D GB2518 DIN EN 10142 ASTM A653 JIS G3302 For simple bending and folding purpose
Drawing quality(DQ) DX52D GB2518 DIN EN 10142 ASTM A653 JIS G3302 For drawing and stamping purpose
Deep drawing quality(DDQ)(IF) DX53D GB2518 DIN EN 10142 ASTM A653 JIS G3302 Unexposed parts and exposed parts with high forming
Extra DDQ(IF) DX56D GB2518 DIN EN 10142 ASTM A653 JIS G3302 Unexposed and exposed parts with high forming
Super EDDQ(IF) DX54D GB2518 DIN EN 10142 ASTM A653 JIS G3302 Unexposed parts and exposed parts with high forming
Hight strength-IF H180YD - DIN EN 10292 ASTM A653 JIS G3302 Beams,door frames
Hight strength-IF H220YD - DIN EN 10292 ASTM A653 JIS G3302 Beams,door frames
Bake-hardening(BH) H180BD - DIN EN 10292 ASTM A653 JIS G3302 Car body parts
Bake-hardening(BH) H220BD - DIN EN 10292 ASTM A653 JIS G3302 Car body parts
Bake-hardening(BH) H260BD - DIN EN 10292 ASTM A653 JIS G3302 Car body parts
Phosphor-alloyed(P) H220PD - DIN EN 10292 ASTM A653 JIS G3302 Car body parts
Phosphor-alloyed(P) H260PD - DIN EN 10292 ASTM A653 JIS G3302 Car body parts
High strength,low alloyed(HSLA) H260LAD - DIN EN 10292 ASTM A653 JIS G3302 Structural parts
High strength,low alloyed(HSLA) H300LAD - DIN EN 10292 ASTM A653 JIS G3302 Structural parts
High strength,low alloyed(HSLA) H340LAD - DIN EN 10292 ASTM A653 JIS G3302 Structural parts
High strength,low alloyed(HSLA) H380LAD - DIN EN 10292 ASTM A653 JIS G3302 Structural parts
Dual-phase(DP) DP-K 30/50 - SEW 097-2 - - Crash-relevant structural parts
Dual-phase(DP) DP-K 30/60 - SEW 097-2 - - Crash-relevant structural parts