Large-diameter, thin-walled, seamless titanium tubes have been successfully produced.

Titanium is known as a "strategic metal" due for its high specific strength, non-magnetic properties, and excellent corrosion resistance. It is widely used in cutting-edge fields such as aerospace, the ocean industry, and the military. However, the excellent properties of titanium also make its plastic processing difficult. Processing large-diameter, thin-walled, seamless titanium tubes has always been a technical challenge in the industry.

Recently, however, our special materials subsidiary has successfully developed large-diameter, thin-walled, seamless titanium tubes, including φ368*5.5*6000, φ219*5*6000, φ159*4*6000, and φ140*3.5*6000. After inspection, the tubes' size tolerance and performance meet the requirements of the GJB 9579-2018 "Specification for Titanium and Titanium Alloy Seamless Tubes for Ships" and the GB/T 3624-2023 "Titanium and Titanium Alloy Seamless Tubes," reaching the leading domestic level. The successful development of this product addresses an urgent need for key domestic specialized equipment and demonstrates the company's strength in titanium seamless pipe manufacturing.

To solve the technical difficulties in processing large-diameter, thin-walled, seamless titanium tubes, our company organized relevant production and technical experts and established a key research project team. Under the leadership of our founder, Mr. Deng Guishun, we achieved several key breakthroughs in large-diameter seamless titanium tube production technology through equipment improvement, technological innovation, and continuous efforts.

(1) Overcoming the production technology bottleneck of large-diameter, thin-walled, seamless titanium tubes with an ultra-large diameter-to-thickness ratio (D/S ≥ 60);

(2) Through bold experimentation and technological innovation, the only current method of producing large-diameter seamless titanium tubes by perforation + cold rolling tube mill has changed. A perforation + extension + drawing processing method has been creatively realized, filling the domestic gap.

(3) The outer diameter, wall thickness, and length of the tubes exceed the maximum sizes specified in the GJB 9579-2018 "Specification for Titanium and Titanium Alloy Seamless Tubes for Ships," GB/T 3624-2023 "Titanium and Titanium Alloy Seamless Tubes," and other standards, expanding the titanium market's application prospects.

(4) By adopting advanced tube mouth shrinking technology and improving the drawing head's structure, the drawing head's length is reduced from 250 mm to 20 mm, greatly reducing material loss.

In the future, our company will continue to innovate and improve, leverage the advantages of our technical equipment, achieve technological breakthroughs, optimize the production process, reduce costs, and produce this type of large-diameter, thin-walled, seamless titanium tube at a lower cost (though slightly higher than small-diameter titanium seamless tubes). I believe that, in the near future, large-diameter, thin-walled, seamless titanium tubes will be widely used in the shipbuilding, chemical, vacuum salt production, metallurgy, and electrical industries, contributing to the development of China's high-end manufacturing sector. We welcome colleagues from all walks of life to strengthen cooperation and create brilliance together!