HG/T 20592  法兰盖 BL 80-63 RF c=295S0812=140c c

So32-16rf304s/-1

bl80-63 rf c=295S0812=140c c

PL80-25 RFF58.5 C=18H412 Ss=

WN 150-150 rf RF S=H=30=6F S=

so100b-16rf-600rjF6 RFRF25�

BL 40-300 RF-RF1H40 HF S=H160 H=153F6

PL300(B)-25RF-11574L=154/70-0RFFSJ)-

耳座 A20R5RF Sc900 RJ S

WN 100-300 RF