... sanitary Drain, Waste, and Vent, sewer drainage applications. Compared with plastic(PVC) pipes, cast iron pipe is more durable. Furthemore ... , traps, access pieces with circle door, access pipeces with rectangular door, access pieces with manual door, etc.Surface finish: With epoxy resin or powder ... we have been exporting to the west coast of America with more than 150 items and sizes, such as BEND, ...