... ,DL/T695,SY/T0510, DIN2617Pipe cap: A type of pipe fitting, usually liquid or gas tight, which covers the end of ... future connection, enough pipe must remain to allow a new fitting to be glued onto it. In plumbing systems that use ... female threads. Industrial caps can be round, square, rectangular, U-shaped, I-shaped and have a round hand grip or a flat hand ...