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Customized ASTM 1015 S15C S17C CK15 15# Special-shape Steel Pipe Irregular Steel PipeUS$ 595 - 605MOQ: 10 Metric Tons -
Triangle Steel Tube ST52 for Agricultural Drive System Cold Drawn Seamless PTO Shaft Triangular Steel PipeUS$ 595 - 605MOQ: 10 Metric Tons
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Customized Steel Hex Tubing Special-shaped Pipe Processing Internal Hexagon PipeUS$ 595 - 605MOQ: 10 Metric Tons
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Special Shape Steel Pipe of Triangular Square Sq Rectangular Rec Hexagonal Hex Octagonal PipeUS$ 595 - 605MOQ: 10 Metric Tons
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High-quality Precision Cold-drawn Special-shaped Steel Pipes Customized Cutting Agricultural Machinery AccessoriesUS$ 595 - 605MOQ: 10 Metric Tons
Cold-drawn special shaped steel tube is manufactured by the cold-drawn steel pipe process. Common foreign grades include ASTM A519 1026, DIN 2391 St52, and EN 10305-4 E355. This process draws round tubes through dies at room temperature, achieving high dimensional accuracy (tolerance ±0.05mm) and a smooth surface finish, which enables further shaping into various non-circular sections.
Based on this precision, it can be made into Irregular steel pipe (e.g., asymmetrical sections for tight or irregular spaces) and Special shaped steel tube (e.g., square, rectangular, oval, D-shaped symmetrical sections). Both forms retain uniform wall thickness and enhanced mechanical properties from cold drawing, meeting complex structural needs without welding or assembly.
These tubes are widely used in hydraulic cylinders, automotive drive shafts, furniture frames, agricultural rails, architectural decoration, and precision machinery. They are commonly found in German industrial equipment, American truck suspensions, and Japanese automated production lines, replacing the traditional "round tube + welding + machining" approach, significantly reducing assembly costs and improving fatigue life.
In the field of shaped steel pipe manufacturing, cold drawing is a core technology for improving product dimensional accuracy and surface quality, and is widely used in the automotive, construction, and machinery industries. Based on my experience over a decade of practical work, choosing the appropriate method can significantly impact production efficiency and finished product performance.
Generally, cold drawing uses drawing force to pass the steel pipe through a die, achieving diameter reduction or shaping. The choice of method depends on the material type, target size, and application requirements. Common processes include mandrel-less drawing (empty drawing), mandrel-with drawing, and diameter-expanding drawing, each with its unique mechanism and applicable scenarios.
Mandrel-with drawing uses a mandrel to support the inner wall, ensuring uniform wall thickness during drawing, making it suitable for producing high-precision thin-walled pipes. This method reduces deformation defects but increases equipment complexity and maintenance costs.
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