HG/T 20592  法兰盖 BL 32-16 RF/u0S=61g/2-20¡.00 RF RF

BL32-16 RF/u0S=61g/2-20¡.00 RF RF

WN700(B)-16 RF s=10

so25(b)-16 t/rf2520δ0=10�1

HG/T20592 PL20(B)-16 RF

PL50B-16RFF0 sc22 rf100-20h40S16…c=1

BL 15-100 RF0S1.0h1605-c8840S D=1=16-008

PL200-6 RF

WN50(B)-16 RFS=5

jb/@47021 C-RF1000-0.6

PL 10