NB/T 47022  法兰 FM 3000-2.5/20δ1=86/

2 FM 3000-2.520δ1=86/

WN200-300 RF Sch40nAA=91 F-RFFFF9

1 FM1400-0.25F00 RF SCH40SRFM S=6RF(B)-16R

BL 200(A)-40 RFampaF-10S=8=16Fp;amp;

1 RF 1200-0.6 δs=4S6R0 LFM Sch10

Bl600-300 RF

SO 40-150 RF01=3 H=1r

DN 50-Sch80S TS=70b=21000-300 RF-950

BL25(B)