NB/T 47023  法兰 C-FM 1500-6.4/20δ0=100

3 CFM 1500-6.420δ0=100

47021 rf1000-0.6/1C2S0,bF2233.php192F/30

wn300(b)-16 rfó┬á╨

WN 80-300 RF S=7

2 M 1600-1.0 δ1=12 S=6M34=8rf sFgkg4ryF=

PL32(B)-16RF=4 Df l=3

WN350-600RF¦Â�bl50(b)-1

WN65(A)-16RFN/)-63F25RF0259Mmp RFf6=34

PL600-10RF-B