PE carbon spiral reinforcing pipe extrusion line 2, long term after-service 3, this is one of our main products PE carbon spiral reinforcing pipe extrusion lineExtruderSJ ... *6.8TT/DJ9013234:145 SJ Single Wall Corrugated pipe production line consists of extruder, die, formingmachine, and winder ... Corrugated Pipes:The corrugated pipes are mainly used for water drainage, sewage outlet, insulation of wire ...