Precision cold drawn seamless pipe is a high-precision, high-performance tubular steel product manufactured through professional cold drawing processing technology based on hot-rolled seamless pipe. Different from ordinary hot-rolled steel pipes, this seamless cold drawn pipe undergoes multiple cold drawing, straightening, precision sizing and sometimes need polishing process at room temperature, which effectively eliminates the dimensional deviation and surface defects of raw pipes. The whole production process strictly controls wall thickness uniformity, outer diameter tolerance and surface smoothness, enabling the precision cold drawn seamless pipe to achieve extremely high dimensional accuracy and excellent surface finish. Without welding seams, the pipe body features integrated structural integrity, uniform internal and external texture, and stable mechanical properties, avoiding the strength weakness and leakage risks caused by welding joints. It is far superior to ordinary welded pipes and hot-rolled seamless pipes in precision, pressure resistance and wear resistance, making it the preferred tubular material for high-precision mechanical manufacturing, hydraulic transmission and precision engineering fields.

ST52 cold drawn seamless pipe is a premium grade of precision cold drawn seamless pipe that complies with classic German DIN industrial standards and updated European EN standard specifications.

Its core implementation standards include DIN 1629, DIN 17100 and EN 10025-2, which are authoritative industrial standards widely recognized in global structural steel and seamless pipe industries. Corresponding to the international S355 structural steel grade and China Q345B/Q355B steel grade, ST52 grade steel is a low-alloy high-strength structural steel with excellent comprehensive mechanical properties, including high tensile strength, good yield performance, outstanding toughness and superior weldability. Unlike ordinary carbon steel pipes, ST52 cold drawn seamless pipe has stable chemical composition and fine internal grain structure, which can maintain reliable structural stability under high pressure, heavy load and complex working conditions. This standard is mainly applied in core fields such as mechanical equipment manufacturing, hydraulic system engineering, automotive structural parts, construction engineering support, fluid transmission pipelines and industrial precision machinery, and is widely used in global industrial manufacturing and infrastructure construction due to its stable quality and strong applicability.

Precision cold drawn seamless pipe has diversified standardized delivery states, which can be customized according to customer engineering requirements and application scenarios to ensure optimal service performance.

The most common delivery state is cold drawn hard state (BK), which retains the high hardness and high strength formed by cold working, with precise dimensional tolerance and smooth surface, suitable for parts that do not need secondary processing and require high structural rigidity. The second is cold drawn soft state (BK S), which undergoes appropriate stress relief treatment after cold drawing, maintaining high precision while improving plasticity and toughness, convenient for subsequent bending, drilling, welding and other deep processing. In addition, there is normalized delivery state (N), which eliminates internal processing stress through high-temperature normalization treatment, with uniform mechanical properties and excellent processing performance, applicable to precision mechanical parts with strict stress requirements. The stress-relieved cold drawn state (BKW) is also a conventional delivery option, balancing precision, strength and processability. All delivery states of our ST52 Precision Cold Drawn Seamless Pipe strictly comply with international standard specifications, ensuring that each batch of seamless pipe meets the precise usage requirements of different industrial scenarios.

Why Choosing XUDSTEEL?

As your supplier of Precision Cold Drawn Seamless Pipe and ST52 Cold Drawn Seamless Pipe means choosing high-quality products, professional services and reliable long-term cooperation. XUDSTEEL is a professional manufacturer and exporter focusing on high-grade seamless pipe products, with more than ten years of production and processing experience in the steel pipe industry. We have introduced advanced full-automatic cold drawing production lines, precision testing equipment and standardized quality control systems, realizing one-stop production from raw material screening, precision cold drawing, heat treatment, size calibration to finished product inspection.

All our ST52 Precision Cold Drawn Seamless Pipe products are inspected layer by layer in terms of dimensional tolerance, surface quality, mechanical properties and chemical composition, with zero defect rate of factory products. We support customized specifications, special size processing and personalized delivery state adjustment, and can provide accurate product solutions according to customers’ actual application needs. In addition, we have perfect supply chain and logistics system, realizing stable supply and fast delivery, and provide professional pre-sales consultation and after-sales technical support to solve all product and application problems for customers.

XUDSTEEL focuses on the R&D, production and sales of various high-quality seamless pipe products, covering a complete range of mainstream steel grades and specifications in the industry. Our main products include ST52 cold drawn seamless pipe, precision cold drawn seamless pipe, carbon steel seamless pipe, alloy steel seamless pipe, hot-rolled seamless pipe and customized precision tubular parts. Our steel pipe products cover multiple standard systems such as DIN, EN, ASTM, GB and JIS, with complete specifications, including conventional and special-sized pipes. The products are widely used in mechanical manufacturing, hydraulic cylinder production, automotive industry, petrochemical engineering, construction engineering, aerospace auxiliary equipment and other fields. Adhering to the business philosophy of "quality first, customer foremost", XUDSTEEL has established long-term stable cooperative relations with customers from more than 30 countries and regions, and has won wide recognition and trust in the global market with stable product quality, competitive prices and thoughtful services.