... 3.size:20-1500mm 4.Technique:Hot rolled galvanized steel coil Standard:ASTM, BS, GB, JISSteel grade: DX51D, SGCC, Cs-B ... , S280, S320, S350, S380, DQ, DDQ ,Q195 Spangle: Regular,Samll ,Big or Zero Enduse: Profiles, purlins ... /m2 DX51 SGCC, Cs-B, S280, S320, S350, S380, DQ, DDQ ,Q195