NB/T 47022  法兰 G 1400-1.0/20δ1=1202b=4

2 G 1400-1.020δ1=1202b=4

WN25-300 RF1400 RF S=5RF0RFS1

2-09WN50(B)-40M S=/6RF.0fsch40sF

WN 25-2500 RJ H1=5 B=21 S=6.35

2 CRF 600-1.020δ1=12δ1=1

20592 WN15-150 RFh40F B=3058.5 fm4.6um.1.

2 FM 600-1.0659 δ1=f-0.6B)-161=77d.50-40rfA.31.60,40FF

2061