NB/T 47023  法兰 G 2800-6.4/2pampam00-1b=3 wn200¬â -80 C-

3 G 2800-6.42pampam00-1b=3 wn200‰ -80 C-

47023rf500-2.5/40-10

47021 FM800-1.0 δ=8 M S=4s=

bl25-25rf16. 34sR=100 CRF

WN100-300 RF SCH40SRF0 R=75600/SF S=7G-458RFCH10

PL250(B)-16RF b=rv-125RFrjb=12.html

wn200-300 rf b=³.6=400-4.0RF RF=3

WN 20-300