... Stainless Steel Flat Bar 1. grade:200 , 300 , 400 series 2. size: 3mm - 12mm x 25mm - 120mm 3 ... . ISO , BV , GSG 312 Stainless Steel Flat Bar 1. grade: 201 ... 321 , 410 , 420 , etc .2. size: 3mm - 12mm x 25mm - 120mm3. standard: ASTM , AISI , JIS , GB , DIN ... ss round bar , ss angle bar , ss flat bar , ss angle bar , ss channel bar , ss hexagonal bar , ss square bar in 200 ...