... 4.WT of finished pipe 4.5,5 Hot rolling machineHot rolling seamless pipe manufacturing line has ... no need pickling, phosphoroused and saponification, low investment , high precision of finished tube, short of processes, heat one ... mandrel--three roller twelve-stander sizing M-C machine assembly--large and small cooling bed--seven-roller ... ×5.134.4×14.8×5.1 hot rolling machine for seamless steel pipe