The gray cast iron soil pipes produced by centrifugal technology which are used in drainage sewer system and ventilation ducts system through a flexible linkage.
Which have following advantages: flat straight, even pipe wall. high strength and density,high smoothness internal and external surface, no casting defect, easy installation, easy maintain, long using life, environmental protecting, fireproofing and no noise.
External diameter DE(mm)
Wall thickness (mm) T