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Square tube is a kind of light-weight thin-walled Du steel tube with hollow square section, also known as Zhi steel cold-formed Dao profile. It is made of Q235 hot-rolled or cold-rolled strip or rolled steel plate as the base material, which is shaped by cold bending and then welded by high-frequency welding. The corner size and edge straightness of hot rolled square tube with extra thick wall can reach or even exceed the level of resistance welding cold formed square tube except for wall thickness thickening. Good comprehensive mechanical properties, good weldability, cold and hot workability and corrosion resistance, and good low temperature toughness.
The uses of square tube include construction, machinery manufacturing, steel construction, shipbuilding, solar power generation, bracket, steel structure engineering, electric power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, Boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high load welded structural parts, etc.
Фbai6x1 Ф34x2-8 Ф71x3-11 Ф152x3-21
Ф8x1-2 Ф36x2-8 Ф73x3-11 Ф153x3-25
Ф11x1-2 Ф38x2-8 Ф76x2-16 Ф168x3-31
Ф12x1-3 Ф41x2-8 Ф81x2-16 Ф181x3-31
Ф14x1-4 Ф42x2-8 Ф83x2-16 Ф213x4-35
Ф16x1-4 Ф45x2-8 Ф83x2-16 Ф245x5-35
Ф18x1-4 Ф48x2-8 Ф35x2.5-16 Ф273x5-41
Ф21x1-5 Ф51x2-8 Ф112x2.5-18 Ф325x5-41
Ф22x1-5 Ф51x2-8 Ф118x2.5-18 Ф355x7-41
Ф25x1.5-5 Ф57x2-11 Ф114x2.5-18 Ф377x8-45
Ф27x2-5 Ф61x2-11 Ф121x3-18 Ф426x8-51
Ф28x2-5 Ф63x2-11 Ф127x3-18 Ф456x8-51
Ф31x2-8 Ф65x3-11 Ф133x3-18 Ф531x8-51
Ф32x2-8 Ф68x3-11 Ф141x3-21 Ф631x11-41
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