... Pipe Machine:It produces round, square, rectangle pipe.its sizes from 8mm up to 114mm. HG20-114 High frequency welded pipe ... .After cooling,sizing and broad straightening,the needed pipe will be produced.Productive process:Raw material (steel ... ,end milling equipment,hydrostatic testing machine,charge table,sack&bale machine,high frequency DC drag,product ... contact me. High Frequency Welded Pipe Machine