Descriptors | Cast-iron, Pipes, Drainpipes, Vent pipes, Stacks, Discharge stacks, Pipe fittings, Ventilating stacks, Drainage, Spigot-and-socket joints, Traps (drainage), Sand casting, Test pressure, Soil stacks, Pipe couplings, Dimensions, Marking, Pipe coatings, Access doors, Pipe connections, Bend couplings, Pipe junctions, Angles (geometry), Unions, Sanitary appliances, Bosses |