What is no hub cast iron pipe?

What is no hub cast iron pipe? Hubless pipe and fittings are also referred to in the plumbing industry as no-hub. Hubless cast iron soil pipe and fittings are manufactured without a hub, in compliance with CISPI 301. Hub and Spigot pipe and fittings have hubs into which the spigot (plain end) of the pipe … Continue reading What is no hub cast iron pipe?