这是今天看到一份资料里对此法兰连接的解释:7 z, H: A( @- T. V
Ring-type joint (RTJ)—a flange with a circumferential groove machined 4 p8 p6 B& A. Tinto the flange face, which requires an oval or an octagonal circular ring 1 Q# J. u, u$ u/ k5 |4 h2 `gasket to make the pressure seal. 8 y) b$ r# ~ r5 k$ _7 ?希望对有同样问题的朋友 有帮助:)