Square Tube Dimension: 20mm*20mm-1000*1000mm Thickness:2mm-35mmm Length:6m-12m , or as per customers requirements Standards:DIN EN10210,EN10219,GB/T3094-2000,ASTM A500,JIS G 3466,GB/T6728-2002 Steel Grades:Q195, Q235, Q345(16Mn), STKR400/490, A500, ST37/44/52, S235, S275, S355, etc. Surface Treatment: anti-rust oil, black painting, galvanizing Packing: in bundles with steel strips or in bulk as per customer request Applications: Construction framework, trestle, motorcar cassis,flight terminal framework, shipbuilding, automobile axle pipe, MRT and so on
