这是今天看到一份资料里对此法兰连接的解释:8 i& [: E6 a1 @, D' H% n; M
Ring-type joint (RTJ)—a flange with a circumferential groove machined 9 ?4 ?5 C8 |! p. H' U4 c! h7 t1 Einto the flange face, which requires an oval or an octagonal circular ring2 T1 X4 i6 D# @( A, ^0 ~# v. x$ I
gasket to make the pressure seal. ; L8 F1 q9 j. S+ @0 Y希望对有同样问题的朋友 有帮助:)