... : 3mm - 12mm x 25mm - 120mm 3. ISO , BV , GSG ASTM 312 Stainless Steel Flat Bar 1. grade: 201 , 202 , 301 , 302 , 303 ... , 410 , 420 , etc .2. size: 3mm - 12mm x 25mm - 120mm3. standard: ASTM , AISI , JIS , GB , DIN ,EN4.surface: bright , pickled , black5..ISO ... specialized in stainless steel , such as ss round bar , ss angle bar , ss flat bar , ss angle bar , ss channel bar , ss ...