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400 Series Astm 410 420 Stainless Steel Coil Cold Rolled 430 Stainless Steel Coil Grade 409 , 410 , 420 , 430 . etc Standard ISO , JIS , ASTM , AS , EN , GB Surface N0.1 , N0.2 , N0.3 , N0.4 , N0.5 , ...