HG/T 20592  法兰盖 BL 25(B)-16 RFB=59

BL25B)-16RFB=59

47023 RF700-6.4 δ=60 H=19500-

so600(b)-16rfd=1025k=.5ff06h60f/

WN 25 (B)-25 RF S=6RF0b-16RFpamJ20δ0=18R/4

WN 20-150 RF25000-200-4.0

3 M 1000-2.5p0=/

WN150-900 RJ B=-1=0G

WN200-600 RF Sch804011 C=14 H=38 D=100 S=37

WN 400-300 RF=1104