HDPE winding pipe machine 1.water drainage pipe 2.pipe diameter ... 3.ring stiffness : 4 or 8 KN/m2 4.CE HDPE winding pipe machine1. Product Specification(mm)Φ200 to Φ3000Each specification ... construction , flats , athetic field, square , mine agriculture , and bridges etc. HDPE winding pipe production linespiral pipe productiion line 4. Detailed flow ...