... ASME, ANSI, API, JIS, JPI, LAP JOINT FLANGES are primarily employed with lap joint stubs, the combined initial cost of the ... of welding neck flanges. The chief use of lap joint flanges in carbon or low alloy steel piping systems ... ANSI, JIS, DIN, and UNI.2,Flanges are the connectors used in process piping to connect pipe to tees, elbows ... wooden pallet or as per customers' requirements Lap Joint Flange