HG/T 20592  法兰 WN 80(B)-63 RJ6RF7.80 b1=5S=10

WN80B-63RJ6RF7.80 b1=5S=10

SO 50-150 RF B=36S=2480s=4=3=

BL 500-6 FF RFRFSch80RFR.0rf150-40

5 M 1600-1.6 δ0=10 D=1

BL(S)400-10RFf100fm/=800

bl20(B)-100RF1=3 BF47 C=58F2r0-ampa

WN 6"-600 RJ Sch160

PL15(B)-16 MD.6

BL20-100G-20�¦-1f sb=: &;