... passing protective 2)ABB converter,OMRON,SHNEIDER PP PE PVC corrugated pipe production line: It can be used to produce corrugated ... -wall corrugated pipes have features of high temperature resistance, resistant to corrosion and abrasion, high intensity, good flexibility, etc. They ... cooling and air cooling of the products, which ensures high-speed molding, even corrugation, smooth inner and outer pipe ...