stainless steel flat bar with perfect surface settlement, strict tolerance, high quality, most reasonable price stainless steel flat bar 1.Stainless steel flat bar's material: 201,202,301,304,310S,316,321,410,420,430,etc.,2.Stainless steel flat bar's production procedure: raw elements(C,Fe,Ni,Mn,Cr,Cu etc.,)--smelted ingots by AOD finery--hot rolled into black surface--pickling into acid liquid-- ...