Seamless steel tubes are made by piercing a solid round steel billet, which results in tubes 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 Pipe、Cold Drawn Seamless Steel PipeExtruded seamless steel tubes, jacking pipes, etc. Seamless steel tubes are divided into circular and irregular shapes based on cross-sectional shape. Irregular tubes come in various complex shapes such as square, elliptical, triangular, hexagonal, pumpkin-shaped, star-shaped, and winged tubes. Diameters range up to 900mm and as small as 4mm. Depending on their applications, they areThick-walled Seamless Steel PipeAndThin-walled Seamless Steel PipeSeamless steel tubes are mainly used for oilGeological 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 classified 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 steel,Stainless acid-resistant steelWait.
General-purpose (used for water, gas pipelines and structural components, mechanical parts) and specialized (used for boilers, geological exploration, bearings, acid-resistant, etc.) categories, divided by application.
1. General-purpose seamless steel tubes are made from ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolling, high yield, mainly used for pipelines or structural parts conveying fluids.
2. Offer three categories of supply based on different applications:
a. Supplied by chemical composition and mechanical properties
b. Supplied by mechanical properties
c. As perWater Pressure TestSupply. Steel pipes supplied under categories a and b, if used to withstand liquid pressure, must also undergo hydrostatic testing.
3. Seamless tubes for special applicationsBoiler Seamless PipeElectricity, geological, and oil seamless steel pipes, among others.
Seamless steel tubes feature hollow 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 manufacturing of structural components and mechanical parts, such as oil drill pipes.Automotive Drive 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.
