Gi 1.ISO 9001 2.ASTM A653, JIS G3302 SGCC/SGCH, ... ... 3.SS grade 33-80; SGCC, SGCH... 4.Z60g-275g GI:With the professional produce line, we can manufacture the best ... the customers requirment!Steel grades: Q195-Q345,GR.A,GR.B, SPCC,SPHC,DX51D, ECT.Standard: JIS G3302, JIS G3313, ASTM ... and high quality.special size and standard can be accepted! GI