Socket-weld flange

A socket-weld flange receives the pipe in a stepped socket and is joined by a fillet weld around the pipe. This connection differs from a threaded flange, which engages pipe threads without a welded pipe end, and from a weld-neck flange, which uses a butt-weld transition. Selection should confirm socket-to-pipe compatibility, assembly clearance, welding procedure and inspection requirements for the project. The product name alone does not establish a socket depth, pipe schedule, pressure class or weld detail.