NB/T 47021  法兰 C-RF 1400-0.6/20δ@100c2&@404.L6 RF/ C=5

1 CRF 1400-0.620δ@100c2&@404.L6 RF/ C=5

WN 200-300 T S=8hR-5RFBFF5F81235

PL65(B)-16 RF= RF0S

WN 22"-1500 SFM-20-5

WN 300(B)-25 RF=1�090rf20 ra36-r

WN 32(B)-16 RF S=H=

WN25-10 RF10ch40S00=1

WN 300-150 RF RF Ⅱ0F�5 RJ=2580S0)-40R sRF30

WN20-