Q235 square tube complete specifications, the thickness and diverse! Integrity management, reasonable price. Xinlong steel inquire 0512-65086995 13382509806 15950991968 complete specifications: 30 * 30 * 40 * 3.0,40 * 2.5,40 * 2.5,40 * 40 * 60 * 40 * 2.0,60 * 3.0,50 * 50 * 4.0,30 * 30 * 3.0,50 * 3.0,40 * 50 * 30 * 40 * 4.0,30 * 3.5,50 * 2.0,40 * 40 * 60 * 50 * 5.0,60 * 4.0,60 * 100 * 60 * 5.75,100 * 5.0,150 * 150 * 80 * 5.0,80 * 4.0,80 * 5.75,100 * 100 * 80 * 80 * 4.75,80 * 4.0,70 * 4.0,70 * 70 * 70 * 75 * 7.0 * 5.75,75 80 * 80 * 8.0,120 * 120 * 120 * 8.0,140 6.0,120 * * * 150 * 140 * 8.0,150 6.0,200 * 200 * 8.0,60 * 5.0,70 * 60 * 70 * 5.0,75 * 75 * 100 * 6.0,100 5.75,100 * * * 120 * 100 * 7.0,120 5.0,120 * 120 * 7 140 * 140 * 150 * 8.0,90 10.0,150 * * * 90 * 4.75,120 9.0,150 * 150 * 120 * 200 * 11.0,80 7.0,200 * * * 100 * 80 * 7.0,100 8.0,140 * 140 * 140 * 9.0,150 7.0,140 * * * 150 * 150 * 9.0,150 10.0,200 6.0,200 * * 200 * 200 * 7.0 square tube: 1, square tube square tube is a product description of hollow rectangular cross-section lightweight thin-walled pipe, also known as cold-formed steel profiles. It is a square cross-sectional shape and size Q235 steel hot-rolled or cold-rolled strip or coil of the base material after the cold bending molding made by high-frequency welding. Hot-rolled special thick-walled square tube wall thickness thickening of the outer case except that the corner sizing and edge flatness meet or exceed the resistance welding cold forming square tube level. Good mechanical properties, weldability, cold, heat processing performance and corrosion resistance are good, with good low temperature toughness. 2, square tube square tube uses include use in construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar bracket, steel works, electrical products square tube square tube products (3) power engineering, power plants, agricultural and chemical machinery , glass walls, car chassis, airports, boiler construction, highway railings, building construction, pressure vessels, oil storage tanks, bridges, power station equipment, material handling equipment and other high load of welded structures