... steel coils Galvanized 1.ISO 9001 2.ASTM A653, JIS G3302 SGCC/SGCH, GB/T 2518... 3.SS grade 33-80 ... PICTURE CERTIFICATEISO9001:2008STANDARDASTM A653, JIS G3302 SGCC/SGCH ,GB/T 2518, European standardASTM A792, JIS G3321 JIS G3317JIS G3312 GB/T 1275…… GRADESS ... grade 33-80; SGCC, SGCH, SGCD1-SGCD3, SGC340-SGC570, SGCC, DX51D….Grade 33 ...