... , 315-630mm production line,16-40mm double strap production linePVC double wall corrugated pipe line 80-500mmPPR pipe 16-110mm production lineHDPE pipe 16-63mm, ... production lineLDPE pipe 16-63mm, 75-160mm production linePE corrugated pipe line 16-500mmPE double wall corrugated pipe line 50-500mmPE winding pipe line 300-3000mmplastic pipe machinerypipe production line high speed pipe production line ...