CISDI owns an IPR-based seamless tube tandem mill equipment and core technology. We design and supply tube mills for producing at a highly automatic way which highlights high-speed data acquisition and process monitor. We have led the way in optimised design, package supply, EPC-/EPCM-based services for tubular products mills.

Core technology：

• Piercing technology：piercing equipment of various types and full specifications and complete production technology

• Tube rolling technology：various types of seamless tube mills, incl. mandrel pipe mill, CPE push bench, Assel mill; awarded 20 tube mill patents

• Tube reducing and sizing technology：tension reducer and sizing mill of various types and full specifications and complete production technology

• Innovative 4-roll tandem mill and 4-roll reducing and sizing mill：a world-class technology, producing tubes in thinner walls and higher dimensional accuracy, especially with a better internal roundness for a thicker-wall tube

• Tube cooling technology：online fast cooling, quenching equipment for heat treatment line and complete production technology

Chengde Steel ø76mm 3-roll mandrel pipe mill 

Valin Steel Wuxin Plant's Φ258mm seamless tube mill