无缝钢管热轧工艺的形式很多,除连轧管机外,现在仍在生产的有:皮尔格周期轧管机,自动轧管机,三辊轧管机,顶管机组等。但从发展趋势来看,连轧管工艺将取代其他的工艺形式,成为生产无缝钢管的主要发展方向。自二十世纪初第一批法塞尔式连轧管机投产以来,已有八十个年头。由于连轧管机过去结构上的种种缺陷,这种工艺未能发展,一般仅作开坯轧机,提供冷轧和冷拔管的坯 Hot-rolled seamless steel pipe technology in many forms, in addition to continuous pipe rolling machine, is still in production are: Pirge cycle mill, automatic pipe rolling mill, three-roll pipe mill, pipe jacking units. However, from the development trend, continuous tube rolling process will replace other forms of technology, as the main development direction of the production of seamless steel tubes. Eighty years have passed since the first batch of Fasher pipe mill was put into operation in the early twentieth century. Due to the past structural defects of the continuous tube rolling mill, this process failed to develop and was generally used only as a bloom mill to provide cold rolling and cold drawing tube blanks