HG/T 20592  法兰盖 BL 500-25 FFd=5553/uR5.4

BL500-25FFd=5553/uR5.4

wn 500-600 RF=2.6…°)-10

5M600-2.5

WN 8"-600 RF Sch160 B=Sch80S50

WN 80(B)-16 RF=16M=3f

WN 20(B)-25 RF S=40-16 FM200R

BI1000 S6-m)-40rf540rf500100-2

DN 150-Ⅱ-12 C

BI 2100

47023 FM600-1.0/56 rf0 FM S=6.RF fSB)FpR h610m1