1. material: grey iron 2. strictly produced to EN877, ISO6594, ASTM A888 ... , ASTM A888 , EN 877 etc, Hubless Cast Iron Soil Pipes has been widely used in the building ... plastic(PVC) pipes, cast iron pipe is more soild and durable. Furthemore, cast iron pipe has excellent noise suppression ... , access pipeces with rectangular door, access pieces with manual door, etc.Surface finish: With epoxy resin or ...