Seamless steel pipes are manufactured by piercing a solid round steel billet, resulting in pipes without any welds on the surface. These pipes are referred to as seamless steel pipes. Depending on the production method, seamless steel pipes can be categorized 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 shapes based on their cross-sectional shape. Non-circular tubes come in various complex shapes such as square, elliptical, triangular, hexagonal, melon-shaped, star-shaped, and winged tubes. Diameters range up to 900mm and down to 4mm. Depending on their application, they vary.Thick-walled Seamless Steel PipeAndSlim-walled Seamless Steel PipeSeamless steel tubes are mainly used in the oil industry.Geological Drilling PipeCracking pipes for oil use, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors.
Seamless steel pipes without joints along their cross-sectional circumference. They are classified into different types based on the production methods.Hot-rolled tubeCold Rolled TubeCold Drawn TubeExtruded tube,Jacking pipeEach product 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 steelPlease wait.
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 their applications.
1. General-purpose seamless steel pipes are made from ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolled, high yield, mainly used as pipelines or structural parts for conveying fluids.
2. Offered in three categories based on different applications:
a. Supplied by chemical composition and mechanical properties.
b. Supplied by mechanical properties;
c. As perWater Pressure TestSupplies. Steel pipes supplied under categories a and b, if used for liquid pressure resistance, must also undergo hydrostatic testing.
3. Seamless tubes for specialized useBoiler Seamless TubeA variety including seamless steel tubes for power and geological use, as well as seamless pipes for oil applications.
Seamless steel tubes feature hollow cross-sections and are extensively used as pipelines for conveying fluids, such as oil, gas, water, and certain solid materials. Compared to solid steel materials like round bars, they are lighter in weight while maintaining the same bending and torsional strength, making them an economical section steel.
Widely used in the manufacture of structural components and mechanical parts, such as oil drill pipes,Automotive Propeller ShaftSteel pipe is used to manufacture circular components for bicycle frames and steel scaffolding for construction, which improves material utilization, simplifies manufacturing processes, saves materials and processing time, and is widely employed in steel pipe manufacturing.
