HG/T 20592  法兰 PL 250(B)-2.5 RF06rf-25m s=3.

æ³⬢å⬦°PL250(B)-2.5RF06rf-25m s=3.

WN 50(B)-16 RFf1516RFF=9δ0=13

SO 80(B)-16 RF b=3f c00900-250�096M0615gWN400-

47023 RF1000-1.0 δ=30 H=1

WN50-150rf S=9δ0=13FMRFRFchm5

PL 50-16 RF55090 A2-14K=120-150rfR0R=

47021 rf550-0.6 î´s=56Sch600--