GB/T 29465  法兰 C-RF 2550-4.0/20δ0=8=40sRF103.Fd=76 D=130

5 CRF 2550-4.020δ0=8=40sRF103.Fd=76 D=130

pl80b)-10 rfFs.6/9B)-58/250B35Sch30B)-

a so50-300 rfF Sch40 ScCH47-2/L610S=

BL300-150 RFG/T2163366 RF0O10rf Sch10 h-1050 r

WN1"-150 RF SCH160 f=2

WN200-300 RF sch40-0-200

pl40 -10 rf Sc4RFR500-64FA= d6