... : ASME, ANSI, API, JIS, JPI, SLIP-ON FLANGES continue to be preferred to welding neck flanges ... by many users on account of their initially lower cost, the ... to connect pipe to tees, elbows, valves, pumps and whatever other equipment may be necessary.3,Types ... : Flat Face Flanges, Slip On, Welding Neck, Blind, Threaded , etc.4,Water , ...