NB/T 47021  法兰 C-RF 1000-0.6&wd=&a

47021 C-RF1000-0.6&wd=&a

WN300-16RF0mB)

1 RF 350-1.6 δs=8

SO 250-150 RF.

SO250(B)-40 MF0FF87

WN 20-150 RFF 2=020rf/RJ=mpampa2F1.6/

PL 80B-16 RFh6RF3

WN250-300m sch16¦Â° bl150-25 rf

bl150-300 rf sch80.–≤вАҐ–Б–≤вАУвАЩ–Юв