Development and Comparative Analysis of 3-roll Mandrel Pipe Mills

The 3-roll mandrel pipe mill is regarded as the most advanced seamless steel tube mill in the world. Described in the article is the development history and the main advantages of such pipe mill. Also elaborated is the mill’ s configuration characteristics, focusing on the comparative analysis of the PQF mill with the axial roll-changeover structure and the FQM mill with the side roll-changeover structure.