HG/T 20592  法兰盖 BL 500-6 T1FH1016rfF.6 40/ RF BB=7940 RF--pampquot17

BL500-6T1FH1016rfF.6 40/ RF BB=7940 RF--pampquot17

BL65-100RJ5 .50-16 SC40S S=51.Tfm0-rfF/

bl25-150rf s=b1=210 l2

wn450(b)-16mn.0/196-33530-

BI 25006(B)-16RF6 RF RF0mG1000-1�

SO350(B)-16 RF/bii 100&a

LWN40-150RF H=400,4=3

so250-40rfH43msR0Ro0RFR