stub end

Electrofusion flange adaptor is an HDPE flange that gets welded onto the pipe end using electricity. Wires heat up a coil inside the flange, melting the plastic to fuse it permanently to the pipe. The metal ring on the flange then allows bolting to standard metal equipment.

A flange adaptor is an HDPE fitting fused onto the end of an HDPE pipe, giving that pipe a flat face with bolt holes so it can easily connect to valves, pumps, or steel pipes.