NB/T 47022  法兰 FF 650-0.25/20δ1=

2 FF 650-0.2520δ1=

SO 3/4"-300 SG

wn100b-600rf s2srfWN4040)-16 rf=1d=235 k FM=60C=5

SO 40(B)-16 RFF SC

WN 100-300 FMch40-63MRJ Sc-1.0ch40=4linW

PL200(B)-16 RFF5ch16

WN 50-150 RF S=10h803 RF SRF/

SO 50(B)-10 RFJ ScRTn25-3045 d=26pl40

B WN800-900