HG/T 20592  法兰 PL 50 (B)-25 RF-1 S1

PL50 B-25 RF-1 S1

WN 250(A)-16 RF S=4 RF S

SO 3"-150 RF��77.5 RJ50 SFMquotF0R RJ-1671F dRT6G

WN400(B)-40FMS=1

so25-900 rf/mpfRF0@RFerF0. TS R4� RF0 RFd0

SO 40(B)-16 RF���77.5 R

BL600-6RF HG/T20592-

WN 600-150 FF50ch5F´s=

WN 3"