The ZS-TDT90-254×1220/12000 steel pipe expansion machine, developed by Tianshui Forging Machine Co., Ltd., marks a significant milestone in China's manufacturing industry. As the first domestically produced machine of its kind, it filled a critical gap in the market and received recognition through provincial scientific and technological achievements appraisal. The technology behind this equipment has reached international standards, earning it the 2007 Tianshui Technology Progress First Prize. This breakthrough solidified Tianshui Forging’s leadership in the domestic pipe-making equipment sector, ending China's reliance on imported solutions for large straight-seam submerged arc welded pipe production lines. Now, China stands as the third country—after the U.S. and Germany—to independently produce such advanced machinery.
The steel pipe expansion machine is a crucial component in large-diameter straight-seam submerged arc welded pipe production lines. Due to its high technical complexity, precise control requirements, and challenging manufacturing processes, many domestic institutions and companies struggled to achieve success for years. Currently, only a few foreign manufacturers, mainly from Germany and the United States, are capable of producing such equipment. These machines come at a steep price, with a single unit costing up to 120 million yuan. In China, all three existing straight-seam submerged arc welded pipe production lines rely on imported machines from Meer, Germany. As a key part of the production line, the expansion machine accounts for about 30% of the total cost and plays a central role in the pipeline manufacturing process.
After years of dedicated research into the expansion process, Tianshui Forging Machine Co., Ltd. successfully developed the ZS-TDT90-254×1220/12000 steel pipe expansion machine with independent intellectual property rights. This machine is primarily used for expanding and straightening steel pipes, eliminating internal stresses and deformations caused during forming and welding. It ensures that the geometric accuracy of the pipes meets strict specifications, making it a viable alternative to imported models. The successful development of this equipment broke the monopoly of foreign manufacturers in the global market, with the price being only one-fifth of similar foreign products. Its market potential is vast.
On December 14, 2006, the machine was successfully tested by Mexican users and was exported overseas. It received approval from a panel of renowned domestic experts, who recognized it as a new product and a significant technological achievement. The company is now working with three international clients: India, the United States, and South Korea. Following technical negotiations and contract signing, the project is expected to generate over 8 million US dollars in foreign exchange. Additionally, it is projected to save more than 24 million US dollars annually, offering substantial economic benefits and reinforcing China's position in the global steel pipe equipment market.
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