... plate length: 6000mm-12000mmNo.TypeDimension(mm)GradeStandards1Carbon structural steelsH 6~160W 1500~3600L 6000~18000Q235,Q275GB/T3274—19882Quality carbon ... A36,D36,E36GB712—2009Rules of classificationsociety7Steel plates for boilersH 6~120W 1500~3600L 6000~1800020g,16MngGB713—19978Steel plates ... bar, flat, bulb flat, coil steel, I-beam, H-beam, square tube, rectangular tube, L section steel to ...