HG/T 20592  法兰盖 BL 400(B)-25 RF 400(B)-25 RF S=10

BL400(B)-25RF 400(B)-25 RF S=10

SO20(b)-10RFhII5-16 RF,S=6B=14906FF=26 FM0-2H

bl250-600rf s=4.5RF Sch400-0.6610mp a=ch80ÃF8 MR=rH801200D=1-

47023fm1200-1r h80T0=8)-10R4rf0sfch80FFFRFfFMsc

wn200-600rf1001

wn125(b)-25rf30s=60R0 A

wn32(b)-40fm s=4/T20