The chrome plated tube has a hollow section when it is used, and its length is much larger than the diameter or the circumference of the steel. In operation, according to its cross-sectional shape, it can be effectively divided into round, square, rectangular and special-shaped steel pipes, which are divided into carbon according to the material. Plain structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe, divided into conveying pipeline, engineering structure, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high pressure equipment according to the purpose Use steel pipes and so on.
The chrome-plated tubes are divided into seamless steel tubes and welded steel tubes according to the production process. Among them, the seamless steel tubes are divided into two types: hot-rolled and cold-rolled (pull-out), and the welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes. Steel pipes are not only used to transport fluids and powdered solids, exchange heat, make mechanical parts and containers, but are 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 mechanized construction. The use of steel pipes to manufacture highway bridges not only saves steel and simplifies construction, but also greatly reduces the area of the protective coating and saves investment and maintenance costs.