... the largest ornamental tube manufacturer 1.Tube Stamping bushing manufacturer 2.Material:Stainless Steel 3.Finish:Plain 4.ISO certificate 5.Over ... etc.Copper; Brass; Bronze; Carbon steel, carbon structural steel, free cutting steel, cold heading steel, cold rolled steel, alloy steel, bearing steel, stainless iron, stainless steel; ductile iron etc.4FinishPlainPassivated ...