这是今天看到一份资料里对此法兰连接的解释:- H H8 b( p" ~) [
Ring-type joint (RTJ)—a flange with a circumferential groove machined# v1 L5 x% w3 C3 P
into the flange face, which requires an oval or an octagonal circular ring % ~' E3 e( \& b4 sgasket to make the pressure seal. ; D7 o& r/ y) x5 P希望对有同样问题的朋友 有帮助:)