Seamless steel tubes are formed by piercing a solid round steel billet, resulting in pipes without any visible welds on the surface. Depending on the production method, seamless steel tubes can be categorized into...Hot-rolled Seamless Steel Pipe、Cold-rolled seamless steel tube、Cold Drawn Seamless Steel PipeExtruded seamless steel pipes, jacking pipes, etc. Seamless steel pipes are categorized into round and irregular shapes based on cross-sectional shape. Irregular pipes come in various complex shapes, including square, elliptical, triangular, hexagonal, pumpkin-shaped, star-shaped, and wing-shaped pipes. Diameters range up to 900mm and as small as 4mm. Depending on their applications, they differ...Thick-walled Seamless Steel PipeAndThin-walled Seamless Steel PipeSeamless steel tubes are primarily used for oil applications.Geological Drilling PipeCracking pipes for oil, 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 categorized according to different production methods.Hot Rolled PipeCold Rolled PipeCold Drawn TubeExtruded tubesJacking pipeEach has its own process specifications.
Material options include standard andCarbon structural steel(Q215-A to Q275-A and 10~)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-resistant, etc.) are categorized by their applications.
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:
Available 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 to withstand liquid pressure, must undergo hydrostatic testing.
3. Seamless tubes for special applicationsBoiler Seamless PipeVarious types 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 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 for construction, can enhance material utilization, simplify manufacturing processes, save materials and labor hours, and are widely used in pipe manufacturing.
