The continuous casting production line of Steel Pipe Company has complete smelting, refining and casting technology. The main equipment includes: torpedo tank pouring station, 1 set of double station iron pretreatment device, 2 converters; 2 LF refining furnaces and 2 supporting deep vacuum treatment VD furnaces; 2 casting machines, a total of 9 round billet sections (ф150～ф430).With the ability of steel seed research and development and trial production, can develop and produce more than 180 varieties, with an annual output of more than 2 million tons, more than 100 varieties.