HG/T 20592  法兰 PL 25-16 RF 20592-

PL25(A)-16RF 20592-

SO 3"-150 RF

WN 250-25 RF

LF/SE 25-150 RF S=5

WN 250)-25 RF

BL 500(A)-10 RFRF0e2F6ES46��@RF@4F B=78

SO20-150 RF

WN 250(B)-25 RF

SO 80(B)-16 RF700-0.6.256 RF@R

SO 25-600 RFch40S Sch80F1161â5c@crf)rfim 6� WN M Ⅱ RJ5 RJ