... ,304,316L,321 3.standard:HG20592, ASME16.5B, DINweld neck reducing flangesize3/8''~160''TypeLap-Joint Flange (LJ), Socket ... -welded Flange (SW), Slip-on Flange (SO), Welding-Neck Flange (WN), Threaded Flange (TH), etc.American SeriesCLASS 150, ... plate flanges, screwed flanges, blind flanges, reducing flanges, weld neck flanges, socket weld flanges, lap joint flanges, spectacles flanges, ring ...