... spiral reinforcing pipe extrusion line 2, long term after-service 3, this is one of our main products PE carbon spiral reinforcing pipe ... 16055038070025*18*6.8TT/DJ9013234:145 SJ Single Wall Corrugated pipe production line consists of extruder, die, formingmachine, and winder or ... high building and underground building, which are reliable// pipe production line// corrugated pipe production line.