Alloy steel pipe fittings are mainly used for high-pressure and high-temperature pipelines and equipment such as power plants, nuclear power plants, high-pressure boilers, high-temperature superheaters, and reheaters. It is made of good carbon steel, alloy structural steel and stainless heat-resistant steel by hot rolling (extrusion, expansion) or cold rolling (drawing).

The biggest advantage of alloy steel pipe fittings is that they can be recycled 100%, which is in line with the national strategy of environmental protection, energy saving and resource saving. National policies encourage the expansion of the application field of high-pressure alloy pipes. At present, the consumption of alloy steel pipe fittings in my country only accounts for half of the total amount of steel products in developed countries. The expansion of the application field of alloy steel pipe fittings provides a broader space for the development of the industry. According to the research by the expert group of the Alloy Tube Branch of China Special Steel Association, the demand for good talents for high-pressure alloy tubes in my country will increase at an annual rate of 10-12% in the future. Gold pipes are defined as steel pipes according to the production material (ie material), which, as the name suggests, are pipes made of alloys; seamless pipes are defined as steel pipes (seamed and seamless) according to the production process. Different from seamless pipes are seamed pipes, including straight seam welded pipes and spiral pipes.

Alloy steel pipe fittings have a hollow cross section and are widely used as pipelines for transporting fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, alloy steel pipe is lighter in weight with the same bending and torsional strength. Alloy steel pipe fittings is an economical section steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, steel scaffolding for construction, etc. Making ring parts with alloy steel pipes can improve the utilization rate of materials, simplify the manufacturing process, and save materials and man-hours, such as rolling bearing rings, jack sleeves, etc. Currently, steel pipes are widely used in manufacturing. Alloy steel pipe fittings are also indispensable materials for various conventional weapons. Alloy steel pipe fittings can be divided into round pipes and special-shaped pipes according to the shape of the cross-sectional area. Because the area of ​​the circle is larger with the same circumference, the circular tube can transport more fluid. In addition, when the ring section is subjected to internal or external radial pressure, the force is uniform, so most steel pipes are round pipes.