GB/T 29465  法兰 RF 1-4.0RFCH.7F20-220-6000-2.50/25Fmp-

DN 40-SCH20 90EL2 RF SFJ5RF1-4.0RFCH.7F20-220-6000-2.50/25Fmp-

BL 2"-300 ST5 Fu55

BL500B-10RFSch40Sf50-120FS/WN/F Sc

WN 400-150 RF SCH10S

WN 20(B)-100 RF S=5 500fs= WN RF S �F-7-

2 FF 400-1.020

bl150-6ffs=10-300RF S-16F60

WN15(A)-25RF0Sam

NB/