Briefly described in the article are the structure of the three - roll piercing mill and troubles and failures frequently occurring in the operation thereof.
简介了三辊穿孔机的结构以及在生产过程中的常见故障和事故。
2
This article has described the function of the screw-down device of the threeroll pipe mill, meanwhile the control technology for the screw-down device adjustment has been analyzed as well.
介绍了三辊轧管机压下装置的功能，并对压下装置调整的控制技术进行了分析。
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.