Size 6 to 934;530X0.8-30mm materialUNSS31500 3RE60 UNSS31803/S32205 SAF2205 UNSS32750 SAF2507 Standard GB13296-91 GB/T14976-2002 GB/T14975-2002 ASTMA789 ASTMA790 ASTMA450 ASTMA530 ASTMA928