HG/T 20592  法兰盖 BL 150(B)-6 RFb)-40 rf,s=

BL150B)-6RFb)-40 rf,s=

PL450B-10Rf001-151000-8keFtml200-0.66

so40(B)-150 RFRF15947=J b

WN100-2500 RJ=100 h=1653/u

WN 1200(B)-16 RF S=6F1100-0.6F

WN40-2500RF(B)b4=60 h=15

SO 80-16 FFmpampam2.533-1991-=2

BL 700A-16 FF-2009 PS=9.532 WN

SO350B)-16RF-16rf