Seamless steel tubes are pipes made by piercing a solid round steel billet, which have no visible welds on the surface and are known as seamless tubes. According to the production method, seamless steel tubes can be divided into...Hot-rolled Seamless Steel Pipe、Cold-rolled Seamless Steel Pipe、Cold Drawn Seamless Steel PipeExtruded Seamless Steel Tubes, Jacking Pipes, etc. Seamless steel tubes are divided into circular and non-circular types based on cross-sectional shape. Non-circular tubes include square, elliptical, triangular, hexagonal, pumpkin-shaped, star-shaped, and winged pipes in various complex shapes. Diameters range from 900mm to 4mm. Depending on their application, they have different specifications.Thick-walled Seamless Steel PipeAndThin-walled Seamless Steel PipeSeamless steel tubes are mainly used for oil applications.Geological Drilling PipeCracking pipes for oil, boiler pipes, bearing pipes, as well as high-precision structural steel pipes for automobiles, tractors.
Seamless steel pipes without joints along their cross-sectional perimeter. They are categorized into different types based on the production methods.Hot-rolled tubeCold-rolled tubeCold Drawn TubeExtruded tubesJacking PipeEach has its own process specifications.
Material options include standard andCarbon structural steel(Q215-A to Q275-A and 10 to)50 steelLow-alloy steel (09MnV, 16Mn, etc.), alloy steelStainless acid-resistant steelWait.
General-purpose items (used for water and gas pipelines, structural components, and mechanical parts) and specialized items (used for boilers, geological exploration, bearings, acid resistance, etc.) are divided into two categories based on application.
1. General-purpose seamless steel tubes are made from ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolled, high yield, mainly used for pipe or structural parts for conveying fluids.
2. Offered in three categories based on different applications:
Supplied based on chemical composition and mechanical properties.
b. Supply based on mechanical properties.
c. As perWater Pressure TestSupply. Steel pipes supplied under categories a and b, which are used to withstand liquid pressure, must also undergo hydrostatic testing.
3. Seamless tubes for specialized useBoiler Seamless PipeVarious types, including seamless steel pipes for electrical and geological use, as well as seamless pipes for oil applications.
Seamless steel pipes feature a hollow cross-section and are extensively used as pipelines for conveying fluids, such as oil, gas, water, and certain solid materials. Compared to solid steel like round bars, they have the same bending and torsional strength but are lighter in weight, making them an economical section steel.
Broadly used in the manufacturing of structural components and mechanical parts, such as oil drilling rods.Automotive Propeller ShaftCircular components made from steel pipes, such as bicycle frames and steel scaffolding used in construction, can enhance material utilization, simplify manufacturing processes, save materials and processing time, and have been widely used in pipe manufacturing.
