... pipe extrusion line 1, turn-key service 2, long term after-service 3, this is one of our main pro HDPE large diameter winding pipe extrusion ... /DJ12018530:16055038070025*18*6.8TT/DJ9013234:145 SJ Single Wall Corrugated pipe production line consists of extruder, die, formingmachine, and winder or stacker ...