GB/T 29465  法兰 FF 650-1.0/20δ0=

5 FF 650-1.020δ0=

WN250-6 RF80116)-16 R/h40S/

WN 25 (B)-25 RF S=6RF0b-16RFpamJ20δ0=18R/40S406

pl100(a)-2.5ffF0F)-10-20B=

IF50-6 RFb=50-63 RFS=2.5F602

SO200(B)-150 RF S=45-ScR

3 FM 1000-6.4201=46L=

n12so100-150rff-20

bl25-10 rfF00-10-16RF=120 FF

SO1