Seamless steel tubes are manufactured by piercing a solid round steel billet, resulting in tubes with no welds on the surface. According to the production method, seamless steel tubes can be categorized as follows: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 cross-sectional shape. Non-circular tubes include square, elliptical, triangular, hexagonal, pumpkin-shaped, star-shaped, and winged tube, among other complex shapes. Diameters range up to 900mm and down to 4mm. Depending on their applications, they differ.Thick-walled Seamless Steel PipeAndThin-walled Seamless Steel PipeSeamless steel pipes are primarily used in the oil industry.Geological Drilling PipeCracking pipes for oil use, boiler tubes, bearing pipes, as well as steel tubes for automotive, tractor, and high-precision structural use.
Seamless steel pipes without joints along their cross-sectional circumference. They are classified into different types based on the production method.Hot-rolled tubeCold rolled tubeCold Drawn TubeExtruded tubesPipe JackingEach 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 tubes are made from ordinaryCarbon structural steel、Low-alloy structural steelOrAlloy structural steelRolled, high yield, mainly used as pipes or structural parts for conveying fluids.
2. Offer three categories of supply based on different applications:
Supplied by chemical composition and mechanical properties.
b. Supplied by mechanical properties
c、As perHydrostatic 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 PipeElectricity, geological, and oil seamless steel pipes, and various types.
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 like round bars, they have the same bending and torsional strength but are lighter in weight, making them an economical section steel.
Widely used in the manufacturing of structural components and mechanical parts, such as oil drill pipes.Automotive Drive ShaftSteel pipe is widely used to manufacture circular components for bicycle frames and steel scaffolding for construction, which can enhance material utilization, simplify manufacturing processes, save materials and processing time.
