201/301/304 stainless steel square tube standard:ASTM A554 Polished:Hariline and Satin GradeMechanical PropertiesTensile ... steel,widely used in manufacturing of equipment for food,general chemical,nuclear power industries,architecture decoration,shipbuilding,military use, ... chemical,automobile exhaust tube and furniture. SUS304 stainless steel pipe/tube OD:9.5mm,12.7mm,15. ...