1. Survey

TYHI has through introduction of technology and consecutively produced a number of seamless pipe production lines in cooperation with German SMS and SPS, American Morgan, Japanese Komatsu and Italian Danieli, etc., including Φ140 seamless pipe continuous mill train for Baosteel, Φ170 three-high pipe mill train for Daye Steel , Φ89 half-floating-mandrel seamless pipe continuous mill train for Hengyang Pipe Mill, Φ180 less-housing limiting-motion mandrel continuous pipe mill train for seamless-pipe continuous-mill-train factory, Φ159 and Φ340 seamless pipe continuous mill train for Panzhihua-Chengdu Steel, etc. Besides, it has, through its effort, designed Φ159 less-housing mandrel-limiting-motion continuous pipe production line with its own intellectual property right and Φ140 seamless pipe production line.

2. Φ140 Seamless Pipe Continuous Mill Train

The complete equipment in Φ140 continuous pipe mill shop for Baosteel was the firs heavy-duty equipment with first introduction of technology from Mannesman, Demag, West Gremany in our country for co-production. The imported equipment approximately covered 25.5%, the local manufactured portion 74.5%. The yearly output of various pipes is approximately 0.55-0.58 million tons.

3. Φ340 Continuous Pipe Mill

Φ340 Continuous pipe mill is the hot rolling pipe production line which was manufactured by TYHI in cooperation with SMS, Germany. With the help of this trainΦ139.7~Φ 426mm O.D. steel pipes with different applications may be produced, with the yearly output reaching 0.5 million tons.