Square Steel Tube, as the name implies, it is a kind of form of tube type, a lot of kinds of material of material can make the tube body, it is medium in, what, in what place, most of the square tube steel tube, for most, after unpacking, smooth, curly, form circular tube welding, again by circular tube rolling into square tube and then cut into required length. Product name:S275M S275ML S355M S420M rectangular Steel pipe Material:S185,S275JR,E295,E360,S235J2,S275J0,S275J2,S355J2,S450UJ0,S355K2,S235JR,S355JR,E355,S235J0,S235J2,S275J2,S355J0,S355J2,S355K2,S275M,S355M,S460M,S420ML,S275ML,S420M,S355ML,S460ML,S355J0WP,S235J0W,S235J2W,S355J2W,S355K2W,S355J2WP,S355J0W,S355J2W,S355K2W,S550Q,S460Q,S620Q,S500Q,S550Q,S550QL,S690QL,S960QL,S960Q,S500QL1,S620QL1,S460QL,S500QL,S460QL1,S890QL1,S620QL,S690Q,S890Q,S890QL,S550QL1,S690QL1,etc Standard:EN10025 Out diameter:20mm-500mm Thickness:1mm-20mm Length:6m,12m or large quantity can be customized. Application:Square tube for decoration, machine tool equipment, mechanical industry, chemical industry, steel structure, shipbuilding, automobile, steel beam and column, special purpose To learn more information of square steel tube,welcome to contact us. Here is our website:http://sdzayisteel.en.made-in-china.com