Cast Iron Pipe confirming to DIN/EN877/ISO6594 Material:Cast Iron with flake graphite Qualilty:GJL-150 according to EN1561 Coating: SML,KML,BML,TML Size:DN40-DN300 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.