NB/T 47022  法兰 FM 600-1.0/659 δ1=f-0.6B)-161=77d.50-40rfA.31.60,

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

wn150-63m sc

20592 WN25-63 RF49

wn125-63 gad0-0-0.6/60-40FF1.5fF RF38F20592-20

LWN100-150 RF-1.0/am0 RF0-1.030bK=650 L0Sh806/55-118.

3 M500-1.6-0+ RFRF Sch)-16

SO 4"-150 RF15d= B=8.26Sch1sch=R