NB/T 47023  法兰 C-M 550-0.6/20δ0=60=18pampam

3 CM 550-0.620δ0=60=18pampam

3FM800-2.546/5 rf-c

WN 40-150 RF Sch80S6.

wn32(b)-160 rjaRF- MRFFh40F 0=80

A BL1000-150 RF)-1616RF8 L5626

wn150-40fm002M100(B)-163 HG/

WN 80-150 RF=10400foRJ162Sch42

20592WN25(B)-40RF30

47021 FM500-0.6/6 rf-16rf

A WN 56