NB/T 47021  法兰 RF 1400-1.6/20 target=

1 RF 1400-1.620 target=

WN 50-150 RF Sch20

WN65-25m wn5B)-0040 gFch8S=10

WN15(B)-63 rf S=60rfh6F.R

LWN80-150 RF Sch80S H=2

47023 FM800-1.6/48FⅠ FFⅠ1=1

WN 20-2500 M Sch16020-35h8

47021 RF 1500-0.25/48-510-15

pl65(b)-6 fm.5RFrf4F0Srfsch1.-195.1

B