... : GB/T2518, JIS G 3302, DIN EN 10142, ASTM A 653. Material Grade: SGCC, SGCD1, SGCD2,DX51D+Z, DX52D+Z, DX53D ... /1500MMStandardGB/T2518, JIS G 3302, DIN EN 10142, ASTM A 653.MaterialSGCC, SGCD1, SGCD2,DX51D+Z, DX52D+Z, DX53D+D,etcSurfaceChromated ...