NB/T 47022  法兰 FF 3000-0.25 δ1=10

2 FF 3000-0.25 δ1=10

wn80-900rj sch80 R16 r2.5

1 CM 600-1 h=0-16rf00c6/data

WN 20(A)-16 RF S=4.2

B WN 750-300 RF S=STD

bl25-25g10 c-rf10016-150 RF@R RF=12 RFFM��aa@J/Fc2@Rt��RJ/Fc2@R RF=

WN 24"-300 RF S=8.74016-150 RF@R RF=12 RFFM��