Recently, Changbao Precision has made a breakthrough in the field of hot extrusion for high-end special materials, successfully realizing the hot extrusion production of high-end stainless steel tubes, corrosion-resistant alloy and high-temperature alloy tubes. This milestone marks the iterative upgrade of Changbao’s forming technology for special materials.

Driven by technological leadership for development, Changbao Special Materials Division has built a comprehensive capability covering material R&D, hot extrusion forming and subsequent precision machining, possessing a number of intelligent production lines including hot extrusion lines, high-end alloy tube lines, ultra-long precision tube lines and clean tube lines, along with a well-established quality control system, which provides all-round assurance for product performance and reliability.

Integrating a 10MN vertical hole expanding machine and a 25MN horizontal extrusion press, the hot extrusion production line is equipped with an automated control system and a full-process tracking system. It enables the accurate, stable and efficient production of high-end alloy tubes in various specifications with an outer diameter ranging from Φ38mm to 127mm and a wall thickness from 3.5mm to 21mm, laying a sophisticated equipment and technological foundation for the forming of alloys with complex compositions.

Through independent process innovation, Changbao Special Materials Division has overcome a number of technical bottlenecks in the hot extrusion of alloy tubes. In the power tube sector, the company has successfully extruded S31035 heat-resistant steel and HT700T nickel-iron alloy tubes, providing a core material guarantee for the clean and efficient transformation of thermal power generation. In terms of corrosion-resistant materials, it has achieved the successful extrusion of ultra-high purity TP316L stainless steel tubes, S38815 high-silicon stainless steel tubes, Hastelloy C series (including N06022) and corrosion-resistant alloy OCTG (including N08028). These products can be widely applied to harsh working conditions such as semiconductor engineering, deep-sea oil and gas exploitation, chemical reactors and flue gas treatment, significantly enhancing the reliability and service life of relevant equipment.

The successful development of this diverse range of high-end alloy hot-extruded tubes demonstrates the company’s comprehensive strength in serving national strategic needs through independent innovation. Looking ahead, Changbao Special Materials Division will continue to deepen its efforts in the field of high-end special materials, continuously optimize its processes and expand its product portfolio, contributing to the advancement of high-end equipment manufacturing.