Precision Bright Seamless Steel Pipe

Precision Bright Seamless Steel Pipe is a core pipe product launched by Wongsteel (Beijing Yijing Technology) for the high-end manufacturing field. It covers three categories: DIN/EN series high-precision precision bright seamless steel pipes, special steel pipes for hydraulic systems, and special steel pipes for automobile manufacturing. It strictly follows domestic and international standards such as DIN2391, DIN2445, EN10305, GB/T3639, GB8713. Materials cover ST35(E235), ST37, ST45(E255), ST52(E355) and 10#, 20#, 35#, 45#, 40Cr, 25Mn and other grades, meeting the strength and toughness requirements of different working conditions.

The core advantage of the product lies in extreme dimensional accuracy control: the outer diameter tolerance is far superior to national and European standards, the normal range can reach ±0.05mm, and the special requirement can be controlled to ±0.02mm; the wall thickness tolerance can be as low as ±0.03mm, with excellent straightness and roundness, perfectly adapting to scenarios with strict dimensional accuracy requirements such as hydraulic systems and automobile manufacturing. The steel pipe is made by cold drawing/cold rolling process, with high surface finish and dense structure, and has excellent mechanical properties. Various heat treatment states such as stress relief annealing, full annealing and normalizing can be provided according to requirements, matching different processing and use requirements.

The chemical composition of the steel pipe is strictly controlled, with precise content of carbon, silicon, manganese and other elements, and extremely low content of harmful impurities such as sulfur and phosphorus, ensuring material purity and performance stability; the mechanical properties fully meet the standards, and indicators such as tensile strength, yield point and elongation are in line with the corresponding standards. Various delivery states such as bright drawn (rolled) - hard, bright drawn (rolled) - soft, stress relief annealing, annealing and normalizing can be provided, adapting to subsequent processing procedures such as welding, stamping and bending.

This product is widely used in hydraulic systems, automobile manufacturing, engineering machinery, aerospace and other fields, and is the core pipe for high-end equipment manufacturing. Wongsteel (Beijing Yijing Technology) can provide customized pipes and technical support according to customers' standard requirements, material grades and dimensional specifications, helping high-end manufacturing enterprises improve their core product competitiveness.