What Is A Steel Tube

Steel with a hollow section whose length is much larger than the diameter or perimeter. According to the cross-sectional shape, it is divided into round, square, rectangular and special-shaped steel pipes; According to the material, it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe; According to the application, it is divided into transportation pipeline, engineering structure, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment steel pipe, etc.; According to the production process, it is divided into seamless steel pipe and welded steel pipe, of which seamless steel pipe is divided into two types: hot rolled and cold rolled (drawn), and welded steel pipe is divided into straight seam welded steel pipe and spiral seam welded steel pipe.

Steel pipe is not only used to transport fluids and powdery solids, exchange heat energy, and manufacture mechanical parts and containers, it is also an economical steel. The use of steel pipes to manufacture building structure grids, pillars and mechanical supports can reduce weight, save 20~40% of metal, and realize factory mechanized construction. The use of steel pipes to manufacture highway bridges can not only save steel, simplify construction, but also greatly reduce the area of coating protective layer, saving investment and maintenance costs.