Solid iron piping was typically created with just one spigot end(basic) and 1 socket or hub finish(cup formed). In use, the spigot of 1 phase was positioned to the socket on the previous a person and a hoop of oakum was compelled down in to the joint by using a http://valves-and-fittings10639.blogolize.com/5-Easy-Facts-About-valves-and-fittings-Described-29321555