Rectangular Tube

Steel with a hollow cross-section with a length much greater than the diameter or circumference. Divided into circular, square, rectangular, and irregular steel pipes according to their cross-sectional shapes; According to material, it is divided into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes, and composite steel pipes; Classified by purpose, it is used for transportation pipelines, engineering structures, thermal equipment, petrochemical industry, mechanical manufacturing, geological drilling, high-pressure equipment steel pipes, etc; According to production processes, it is divided into seamless steel pipes and welded steel pipes. Seamless steel pipes are further divided into hot rolled and cold rolled (drawn) types, and welded steel pipes are further divided into straight seam welded steel pipes and spiral seam welded steel pipes.
Steel pipes are not only used for conveying fluids and powdered solids, exchanging heat energy, manufacturing mechanical parts and containers, but also as an economical steel material. Manufacturing building structural grids, pillars, and mechanical supports with steel pipes can reduce weight, save metal by 20-40%, and achieve factory mechanized construction. Manufacturing highway bridges with steel pipes not only saves steel and simplifies construction, but also greatly reduces the area of protective coatings, saving investment and maintenance costs.