... drainage GB/T12772-2008cast iron drainage pipe and fittings, soil pipes, cip, pipe fittings, coupling, astm a888, en877, astm a74, ... bs 437Hubless/socketless Cast Iron Soil/drainage Pipes and fittings has long been employed by the building industry ... , Waste, and Vent, sewer drainage applications. Compared with plastic(PVC) pipes, cast iron pipe is more durable. Furthemore, cast iron pipe ...