Din cold drawing

The DIN cold drawing service offered by Shanghai Tianyang Steel Tube Co., Ltd transforms carbon‑steel billets into precision tubes through a controlled cold‑drawing process that improves tensile strength and surface finish. The process follows DIN standards and is capable of producing a variety of shapes and diameters while maintaining tight dimensional tolerances. Typical material grades used are carbon steel grades 20 and 45, which after drawing achieve yield strengths around 350 MPa and tensile strengths near 500 MPa.

Drawing is performed with a bright heat‑treatment that prevents oxidation, resulting in a surface roughness generally below Ra 0.8 µm and a uniform metallurgical structure. Standard tolerances are ±0.1 mm for diameter and ±0.05 mm for wall thickness, and the service can deliver tubes with outside diameters from 6 mm up to 200 mm and wall thicknesses between 2 mm and 20 mm. The finished tubes are inspected for straightness, roundness and hardness, typically around 180 HB, to ensure they meet the mechanical requirements of demanding applications. Customers may request additional surface coatings such as oiling or phosphating, which are applied after drawing if required.

Industries that rely on these cold‑drawn tubes include automotive chassis, construction reinforcement, heavy‑machinery components and aerospace structural parts, where high tensile strength and low surface defects are critical. The supplier accepts flexible minimum order quantities and can ship under FOB or CIF terms, with payment options of T/T and L/C. All shipments are accompanied by ISO and CE compliance documentation, and buyers are encouraged to request a third‑party inspection report for each batch.

Shanghai Tianyang Steel Tube Co., Ltd is situated at No.4638 Jin Qian Road, Qianqiao, Fengxia, Shanghai 201407, China. The supplier appears in the harbour trust tier; platform records show a response rate of 0 percent and no average response time, so prospective buyers should confirm communication responsiveness directly with the company.

The firm manufactures cold‑drawn steel tubes and advertises compliance with ISO and CE standards. It offers flexible minimum order quantities, ships under FOB or CIF terms from Shanghai ports, and can arrange both T/T and L/C payment methods. No additional historical or financial data is provided beyond the stated capabilities.