Seamless steel pipes are formed by piercing a solid round steel billet and have no welds on their surface, hence the name "seamless steel pipe." 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 categorized into round and shaped types based on cross-sectional shape. Shaped tubes include square, elliptical, triangular, hexagonal, melon-shaped, star-shaped, and winged tube with various complex shapes. Diameters range up to 900mm and down to 4mm. Depending on their applications, they differ.Thick-walled Seamless Steel PipeAnd薄壁 Seamless Steel PipeSeamless steel tubes are mainly used in the petroleum industry.Geological Drilling PipeCracking pipes for oil use, boiler tubes, bearing tubes, and high-precision structural steel tubes for automobiles, tractors.
Seamless steel pipes without joints along their cross-sectional periphery. They are categorized according to different production methods.Hot-rolled tubeCold-rolled tubeCold Drawn TubeCompression TubeDirect pipe jackingAll have their respective 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, gas pipelines and structural components, mechanical parts) and specialized items (used for boilers, geological exploration, bearings, acid-resistant, etc.) are divided into two categories based on their applications.
1. General-purpose seamless steel tubes are made from ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolling, high yield, mainly used for pipeline or structural parts 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 TestSupply. Steel pipes supplied under categories a and b, if used to withstand liquid pressure, must undergo hydrostatic testing.
3. Seamless tubes for specialized useBoiler Seamless PipeA variety of seamless steel tubes for power, geological use, and oil applications, etc.
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 products like round bars, seamless steel tubes 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 Propeller ShaftCircular components made from steel pipes for bicycle frames and steel scaffolding used in construction are widely utilized as they enhance material efficiency, streamline production processes, and save on materials and processing time.
