HG/T 20592  法兰盖 BL 80-25 RF=61

BL 80-25 RF=61

SO150-150 rF D=283 S6RFRTS-

BI 356 sc80h400L=163rf1000

3 RF 1200-4.020δ0=16

PL 50(B)-16 RFF Ⅱ S=50

WN250-150 RF Sch40F sch4600rS50J5-�

WN 250(A)-100 RF S=16f-S0C=HG2=n80-90-

b wn1000-300 rf/static

wn500-16rf sch30 sch4/r

a 160060W