Roll grove to flange adaptors are a great way to add a flange to your grooved pipework. No welding required! Great for butterfly valves.
Need a socket in a pipe but don't want to weld in a socket? Mechinal Tee is just what you need. Just use a hole saw and drill a hole, Slip the Tee into the hole and fasten the backing clamp and done, No welding, No rust, No paint.