HG/T 20592  法兰 SO 500-16 FF B=5

SO 500-16 FF B=5

B WN 34"-300 RF

B WN 650-300 RF S=22

wn20 -40 rf h

PL64-16RFCH4M600

pl100-25FFL1s060 n==

47023 rf900-1.6 52/

PL 50(B)-25 M

PL 250(B)-16 RF b=0FFf/@R0u00a30f/@470

WN 150-150 RF5RFm40/0(BRF sch40F6F@FSFS1SFJ R1cBRFF0R MR-1A04Sch8