... forged, pickled,full composition qualified machanical property,etc., stainless steel channel bar 1.material grade:AISI 201,Y201Cu,202 AISI ... surface--pickling into acid liquid--cutting into pieces--checking quality--package4.surface:black,pickling,etc5.common sizes we have ... 30mm*15mm*15mm*1mm-300mm*150mm*150mm*30mm6.usage:stainless steel channel bar is widely used in chemical, shipping,architecture ...