Three-roll planetary rolling is of complex severe deformation process and it is difficult to study the forming laws.
三辊行星旋轧变形复杂剧烈，对于其成形规律的研究具有很大的难度。
2
The product quality and further processing are affected by the curvature of seamless steel pipe caused during rolling through the three-roll size reducing mill.
无缝钢管经过三辊定减径机轧制生产工序后，有时会产生弯曲，影响产品质量和深加工。
3
The setting parameters of the three-roll bending plate internally -sup porting spiral welded pipe mill are critical for ensuring satisfactory and consistent quality of the welded pipe formation.