Seamless steel pipe information; Qingdao Steel Xinyuan adds 850 seamless steel pipe hot rolling unit
Hit：272026-05-18 08:43:18
Seamless steel pipe information; Qingdao Steel Xinyuan adds 850 seamless steel pipe hot rolling unit
The largest seamless steel pipe hot rolling unit in Shandong can produce products with a specification of up to 850 millimeters, and is planned to be put into operation in July 2026. This production line is constructed by Qingdao Gangxinyuan Metal Products Co., Ltd. and is known as the "850 Project". It is currently the world's largest hot-rolled seamless steel pipe production line in terms of caliber.
This project is the first to achieve one-time continuous rolling of large-diameter steel pipes, breaking through the limitations of traditional multi pass rolling and significantly improving production efficiency and product accuracy. After production, the annual production capacity can reach 800000 tons, focusing on high-end seamless steel pipes with outer diameters of 380 to 850 millimeters, widely used in major fields such as energy, nuclear power, and marine engineering.
The technological development of this unit marks China's shift from being a follower to a leader in the field of large-diameter hot-rolled seamless steel pipes, breaking the long-standing dependence on imports. For example, the complete set of equipment for large-diameter hot-rolled seamless steel pipe units designed and manufactured by Taizhong Group has a domestic market share of about 95%, covering hot-rolled products ranging from Ø 273mm to Ø 850mm.
Core parameters and technical specifications
Maximum rolling outer diameter: Φ 850 millimeters
Maximum wall thickness: 95 millimeters
Annual production capacity: 800000 tons
Process type: Three roll limited motion continuous pipe mill (FQM)
Forming method: the world's first "one-time continuous rolling forming", replacing the traditional secondary hot expansion process
Core equipment: FQM rolling mill memorial archway weighs 304 tons per piece and 803.1 tons in total, adopting innovative installation technology of "double crane lifting+four roof leveling"
Production time: Planned to be completed and put into operation in the first half of 2026
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