... structure steel cold and hot rolled sheet by standard GB/T710,711,ASTM A366,A284,A414, ... of supplying carbon structure steel cold rolled and hot rolled sheet by standard GB/T710,711,ASTM A366,A284,A414,A285 ... 15Mn3,21Mn4,30Mn4,36Mn4,40Mn4By BS:040A10,12,040A12,080A15,20,070M26,080M30,36,40,46,50,070M35,60,080A67, ... 72,78,81,080A15,20,080M30,40,47,50By JIS:SPHD3.Size: thickness 0. ...