PREPAINTED 1. ISO 9001 2.JIS G3312 GB/T 1275 3.CGCC,CGCH,CGC340-CGC570,CGCD1-CGCD3; ... 4.Z OR AZ COATED SpecificationsPREPAINTED 1. ISO 9001 2.JIS G3312 GB/T 1275 3.CGCC,CGCH,CGC340-CGC570,CGCD1-CGCD3 ... .A, GR. B, SPCC,CGCC, SPHC, DX51D, ect.StandardJIS G3302, JIS G3313, ASTM A653, GB/T2518-88, GB11253-89, ASTM A1008 ...