【Ten Years of Rapid Development in Chemical Engineering Equipment】2377–2022: Taiyuan North Heavy Industry developed China’s first large-diameter seamless steel pipe threading and expanding unit
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This post was last edited by “Fish Swimming in the Desert” on May 16, 2025, at 09:17. Let’s give a thumbs up and encouragement to the achievements made in China’s chemical engineering technology and equipment. Your participation in the discussion is the greatest encouragement! ********************** [Ten Years of Great Development in Chemical Engineering Equipment] This is a continuously updated summary thread; all are welcome to join the discussion: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** A domestic first and world-leading achievement: Taiyuan North Heavy Industries has successfully developed a large-diameter seamless steel pipe piercing and expanding machine. Taiyuan Daily, July 24, 2022, 06:28. On July 23, 2022, the large-diameter seamless steel pipe piercing and expanding machine developed by Taiyuan North Heavy Industries Machinery Co., Ltd. was successfully installed and has now entered the debugging phase. This unit was jointly developed and designed by Taiyuan North Heavy Industry and the steel pipe technology R&D team from Taiyuan University of Science and Technology, with Taiyuan North Heavy Industry being responsible for its manufacturing. The unit employs a large-perforation + diameter-expansion one-step forming technology, which is the first of its kind in China, and its equipment technology and control level are among the best in the world. Professor Chen Jianxun, the chief expert in industry-university-research collaboration for this project, explained that the unit is equipped with equipment such as piercing and expanding machines, precision rolling machines, leveling machines, reducing machines, and straightening machines. The maximum outer diameter of the products produced is 426 mm, with high accuracy in wall thickness; these products are used in the manufacturing of high-pressure gas cylinders, as well as in industries such as oil and gas, chemicals, and defense, and can withstand pressures of over 30 MPa. Currently, the unit has entered the commissioning phase, with trial production expected to begin at the end of August. The Technology Center of North Heavy Industry, in collaboration with Taiyuan University of Science and Technology, is also working on the key research and development project in our province titled “Research on Complete Sets of Technologies and Equipment for High-Performance Small-Diameter Oil Well Pipes.” This project has led to another breakthrough in the production of high-performance small-diameter oil well pipes; the performance of these products meets the requirements of API standards, and trial production is expected to begin by the end of the year.
Professor Chen Jianxun, the chief expert in industry-university-research collaboration for this project, explained that the unit is equipped with equipment such as piercing and expanding machines, precision rolling machines, leveling machines, reducing machines, and straightening machines. The maximum outer diameter of the products produced is 426 mm, with high accuracy in wall thickness; these products are used in the manufacturing of high-pressure gas cylinders, as well as in industries such as oil and gas, chemicals, and defense, and can withstand pressures of over 30 MPa. At present, the unit has entered the commissioning phase, with trial production expected to begin at the end of August. The core manufacturing process is unique in China; to ensure its reliability, Taiyuan North Heavy Industry and the research team from Taiyuan University of Science and Technology conducted months of simulation calculations and meticulous design work, and held numerous discussions and evaluations with user experts before finalizing the design plan. The equipment was developed by the end of May 2022 and sent to the user’s site. It is understood that since its establishment in 2003, Taiyuan North Heavy Industry has focused on the processing and manufacturing of mechanical products, providing China’s equipment manufacturing sector with a large number of technical devices featuring independent intellectual property rights. Since 2018, the company has aimed for high-quality transformation and development, guided by market demands and relying on research efforts to increase investment in scientific research, deepen cooperation with universities, and strengthen its talent base. It has carried out industry-university-research collaborations with institutions such as Taiyuan University of Science and Technology, Taiyuan University of Technology, and North University of China to develop new products and innovative manufacturing processes, thereby continuously raising the technical level of its products. The company has moved from conventional manufacturing to smart manufacturing, and has succeeded in developing a complete set of technologies and equipment for high-end seamless pipes, thus paving a new path for technological transformation in the equipment manufacturing sector.
Beifang Heavy Industry has applied for a patent to remove the oxide layer from the fracture surfaces of P92 seamless steel tubes, which enables the observation of the original morphology of such fracture surfaces for the purpose of failure analysis of P92 seamless tubes. https://bbs.hcbbs.com/thread-5693258-1-1.html (Source: Haichuan Chemical Industry Forum)
Give a thumbs up and offer encouragement to the achievements of China’s chemical technology and equipment sector!
Small drops combine to form rivers; equipment drives development
【Ten Years of Rapid Development in Chemical Equipment】From 2023 to 2025, Ningxia Coal Industry successfully developed a new type of catalyst for the hydrocracking of FTO synthesis oil through independent research; this catalyst has been approved for use. https://bbs.hcbbs.com/thread-5693272-1-1.html (Source: Haichuan Chemical Industry Forum)