HG/T 20592  法兰 SO 80(B)-16 FM211 C=360sFrum@S6RF/72-

SO 80(B)-16 FM211 C=360sFrum@S6RF/72-

so500(b)-16rf db)-10r0-s /@BI 10004&amp

20623b wn 800-300 rf b=7931295 FM S=9Lr

wn 300-150 rf S=10

BL 600-300 RFе090R6RF�°bl250-150rfFS614

WN 50-300 RF S=5.65 RF-s /@BII 10000-

WN 32-16RF S=6g5/1E

WN350-15