NB/T 47021  法兰 C-FM 450-0.6mpampam-25 FM S=64

47021 c-fm450-0.6/0mpampam-25 FM S=64

wn 300-300 RFF405 SSch8080SR0-2.509F S=849pl0-2050 rfF1

WN 80-300 RF0.6/A=33 g66.F7ch80/020 S=3.2Sch

SO 15-150 RF B5/50-1006-6 s=10 S=3.

WN 65-150 RF S=5.5 δ0=22M0-f/

WN80(A)-16RFS=6if RF B=2 b=2F-1

pl700(a)-2.5