GB-T1591 Q420B Steel Plate supplier     Q420B Adopt standard: GB-T1591 Standard Specification is for Rolled Steels for Welded Structure Q420B Specification: Thickness: 1mm to 500mm; Width: 1500mm to 4500mm: Length: 3000mm to 27000mm Third Party Inspection for Q420B: ABS, DNV, BV, GL, CCS, LR, RINA, KR, NK, CE, SGS, IKE, IEI or other quality department. Q420B Chemical composition Max % of the Product analysis of grade C Si Mn P S Nb V Ti 0.20 0.50 1.70 0.035 0.035 0.07 0.20 0.20 Cr Ni Cu N Mo B Als min 0.30 0.80 0.30 0.015 0.20 – – Q420B Yield strength […]

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