... :300mm-800mm 2.material : Polyethelene, steel wire steel wire composite pe pipes for sewage treatmentFeature: 1. Non-toxic and healthy: Pipe material are ... expenses under complex or special environment.5. offering corresponding accessories for each pipe ( tee, elbow, coupling, ect)6. Recycled and ... high toughness, good flexibility, long life span. steel wire composite pe pipes for sewage treatment