Seamless steel tubes are pipes produced by piercing a solid round steel billet, which do not have any visible welds on their surface. According to 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 categorized into round and non-round shapes based on their cross-sectional shape. Non-round tubes come in various complex shapes, including square, elliptical, triangular, hexagonal, melon-shaped, star-shaped, and winged tubes. Diameters range up to 900mm and as small as 4mm. Depending on their application, they differ.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, and high-precision structural steel pipes for automobiles, tractors.
Seamless steel pipes without seams along their cross-sectional circumference. They are categorized according to different production methods.Hot-rolled tubeCold Rolled TubeCold Drawn Tubeextruded tubeJacking PipeAll have their respective process specifications.
Materials available 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, gas pipelines and structural components, mechanical parts) and specialized items (used for boilers, geological exploration, bearings, acid-resistant, etc.) are divided into two categories by application.
1. General-purpose seamless steel tubes are made of ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolling, high yield, mainly used for piping or structural components for conveying fluids.
2. Offer three types of supplies based on different applications:
Available by chemical composition and mechanical properties.
b. Supplied according to 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 tubes for electric power, geological use, and oilfield applications.
Seamless steel tubes 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 materials like round bars, they are lighter in weight while maintaining the same bending and torsional strength, making them an economical section steel.
Broadly used in the manufacturing of structural components and mechanical parts, such as oil drill pipes.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.
