这是今天看到一份资料里对此法兰连接的解释: / c+ j4 M1 q' n2 O, \5 A2 i. i- eRing-type joint (RTJ)—a flange with a circumferential groove machined. F1 H7 G! j( Q& H3 C
into the flange face, which requires an oval or an octagonal circular ring$ _2 g- D9 V$ ?6 v i
gasket to make the pressure seal. ' d' T; s! `4 z% \1 v希望对有同样问题的朋友 有帮助:)