NB/T 47023  法兰 M 2400-6.4/20=��0RFwn1e

3 M 2400-6.420=��0RFwn1e

WN600-150 RF Sch0-

PL65 (B)-6 RF10(b)-10rf fdp26 s SC5RF Bad-c

WN16"-150 RF S=66

WN100-150 RF B=100F5 RF S=0F0 fm0

so 25-150 RF0-/5=710

pl25-16rfff-16mPL200

WN 50(B)-40 MFmpamanywR wn1400-10r

PL80-10RF n a=4�

wn4