1. material: grey iron 2. strictly produced to EN877, ISO6594, ASTM A888 ... 6594 , ASTM A888 , EN 877 etc, Hubless Cast Iron Soil Pipes has been widely used in the building ... with plastic(PVC) pipes, cast iron pipe is more soild and durable. Furthemore, cast iron pipe has excellent noise suppression and ... ) Couplings. 301 seriesMaterial: Stainless steel. Packing: Cartons. cast iron sewerage water pipes