polished stainless steel hexagonal bar Grade 316L hot rolled,polished,high quality with reasonable price polished stainless steel hexagonal bar Grade 316L1.material grade:AISI 201,Y201Cu,202 AISI 303, 304, 304 L, 310,310S,316,316L,317,321 AISI 410, 420, 430, 430F, 4312.standard:ASTM A 276,A 484,A564,A581,EN 10272,JIS4303,JIS G 4311,JIS G 4318 etc3.production procedure: raw elements(C,Fe,Ni,Mn,Cr, ...