NB/T 47021  法兰 RF 550-1.6FM RFFF/ch40PLata RF

1 rf550-1.6FM RFFF/ch40PLata RF

WN450-600 RF S=12 S=3 FF â

bl500-150ff/600 RF FM Schg/SF/m

wn600-300 M.60RFRh406-b)-10r

WN38"-150RF S=200/G/0-409

so 150-150 RF

1 RF 450-1.6 δs=5�c

WN40(b)-16 Mï؟½80/FMFMFRFRF Sch10S

so 100-150 RF

a wn750-9