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Carbon steel tubing offers a range of benefits. Not only is it safe and durable, but carbon steel round tubes can withstand high stress and is not affected by pressure fluctuation or violent weather conditions. Its shock resistance makes it a good choice for infrastructure.

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Square Pipe, Round Pipe, Seamless Pipe, Welded Pipe, Rectangular Pipe, API 5CT Tubing, SAWL/ SAWH Line Pipe, Boiler Tube, ERW Structural Pipe, Galvanized Pipe,Anti-corrosion Coating Pipe, Precision Tube etc.
welded steel pipe has simple and high efficiency production process , there are many varieties and specifications, but the general strength is lower than seamless steel pipe. Welded steel pipes can be divided into Straight Seam Welded Pipes and Spiral Welded Pipes according to the form of welds, and into Circular Welded Pipes and Special-Shaped (Square, Rectangular, etc.) Welded Pipes according to the shape of steel pipe ends.

Rectangular tube is a hollow square cross-section lightweight thin-walled steel tube, also known as steel cold-formed profile. It is a square section steel with a square cross-section shape and size made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold bending and then high-frequency welding. In addition to the thickening of the wall thickness, the corner size and edge straightness of hot-rolled extra thick-walled square tubes reach or even exceed the level of resistance welded cold-formed square tubes.
Classification of rectangular pipes: Steel pipes are divided into seamless steel pipes and welded steel pipes (seamed pipes), hot-rolled seamless square pipes, cold-drawn seamless square pipes, extruded seamless square pipes, and welded square pipes.

Rectangular tube is a hollow square cross-section lightweight thin-walled steel tube, also known as steel cold-formed profile. It is a square section steel with a square cross-section shape and size made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold bending and then high-frequency welding. In addition to the thickening of the wall thickness, the corner size and edge straightness of hot-rolled extra thick-walled square tubes reach or even exceed the level of resistance welded cold-formed square tubes.
Classification of rectangular pipes: Steel pipes are divided into seamless steel pipes and welded steel pipes (seamed pipes), hot-rolled seamless square pipes, cold-drawn seamless square pipes, extruded seamless square pipes, and welded square pipes.

Rectangular tube is a hollow square cross-section lightweight thin-walled steel tube, also known as steel cold-formed profile. It is a square section steel with a square cross-section shape and size made of Q235 hot-rolled or cold-rolled strip or coil as the base material, cold bending and then high-frequency welding. In addition to the thickening of the wall thickness, the corner size and edge straightness of hot-rolled extra thick-walled square tubes reach or even exceed the level of resistance welded cold-formed square tubes.
Classification of rectangular pipes: Steel pipes are divided into seamless steel pipes and welded steel pipes (seamed pipes), hot-rolled seamless square pipes, cold-drawn seamless square pipes, extruded seamless square pipes, and welded square pipes.

Size : OD：16-1020mm(1/2inch~40inch), Wall Thickness: 3mm-22 mm, Length: 2000-16000mm，or as required.
Steel Grade : Q195—Grade B, SS330, SPC, S185Q215—Grade C,CS Type B, SS330, SPHC，Q235---Grade D, SS400, S235JR, S235JO, S235J2，Q345---SS500, ST52，S355JR and etc.

Carbon steel square tubing is used in most general purpose applications. Low carbon content relatively good mechanical properties along with high quality weldability make it a common choice in fabrication and structural applications. Easily drilled, welded and bolted. Uses include: general machinery where suface imperfections may be tolerated.