HG/T 20592  法兰 SO 500-10 RFG/0300-

HG/T21596-SO500-10RFG/0300-

WN 80-150 RF C=19.8 f1=4.5

DN 200×90-3 REF.=5�вӮ¬25

PL150(B)-6 RF 负02 S=4

47023fm1000-1.0δ1=19

PL400B-16RF0.6)- 45EL50�85R

wn65(a)-300rfh40 l=1

WN250-10FM RF00B)-10 RF,HGf

BL25-1500 RF Sch80F2000FM S=8.8/