... 3200mm ship plate length: 6000mm-12000mmNo.TypeDimension(mm)GradeStandards1Carbon structural steelsH 6~160W 1500~3600L 6000~18000Q235,Q275GB/T3274— ... , X70, X80,API spec 5L-2004 4311High strength structural steelPlates products supplied inHeat-treated or controlled rolledconditionH 6~100W ... bar, flat, bulb flat, coil steel, I-beam, H-beam, square tube, rectangular tube, L section steel to customers ...