... Drain, Waste, and Vent, sewer drainage applications. Compared with plastic(PVC) pipes, cast iron pipe is more soild and durable. Furthemore ... branches, corner branches, unequal branches, down pipe support, spigot caps, reducer, traps, access pieces with circle door, access pipeces with rectangular door ... cases.3) Couplings. 301 seriesMaterial: Stainless steel. Packing: Cartons. iron drainage pipe