LGS—25二辊双线环孔型冷轧管机是西重所与上海第二铜管厂共同设计,无锡西漳农机厂制造的我国第一台二辊多线冷轧管机。本文阐述了该轧机的工作原理,主要性能参数,轧机的各部组成,孔型设计,轧机的试验与生产,力能参数测定及环孔型加工等。 LGS-25 two-roll double ring hole cold rolling mill is the joint design of the second heavy copper pipe plant of West China and Shanghai, the first two-roll multi-line cold rolling mill manufactured by Wuxi Xizhang Agricultural Machinery Factory. This paper describes the working principle of the rolling mill, the main performance parameters, the mill’s ministries, hole design, rolling mill test and production, the determination of force and energy parameters and ring hole processing.