... with plastic(PVC) pipes, cast iron pipe is more durable. Furthemore, cast iron pipe has excellent noise suppression and fire resistant ... choice for drainage inside the building.1) For no-hub pipe: Standard: EN877, ISO6594; ASTM A 888, CISPI301 Nominal ... , single branches, double branches, corner branches, unequal branches, down pipe support, spigot caps, reducer, traps, access pieces with circle door, ...