... :Q235, A500, S235 2. Thickness: 0.6mm-8.0mm Q235 New square steel pipeStock size14*14, 15/15, 16*16, 18 ... , 30*30, 32*32, 38*38, 40*40, 45*45, 50*50, 60*60, 70*70, 80*80, 100*10018*12, 20 ... *20, 32*14, 38*12, 60*30, 60*40, 60*50, 70*25, 70*30, 70*38, 70*40, 80*30 ... *50, 100*60Thickness: 0.6mm-8.0mmGrade: Q235, S235Technique: hot rolled carbon steel Length: 5.8M, 6M, 12MStandard: GB6728, JIS G3446 Q235 New ...