... ,301,304,310S, 316,316L,410,420,430,etc. 2.hot rolling and cold rolling 1.material: 201,202,301,304 ... ,Ni,Mn,Cr,Cu etc.,)--smelted ingots by AOD finery--hot rolled into black surface--pickling into acid liquid--cold drawn--polished ... with accurate sizes and special requirements are also available stainless steel flat bar