HG/T 20592  法兰盖 BL 40-10 RF=36F/12-70.5 hg1

BL40-10 RF=36F/12-70.5 hg1

PL 10(B)-16 RF8 S=3.5

lwn40-300rf hg/t2061 s=12503==Tâ0 RF Sch80S;amp;amp;a

20592+wn50-16rf/inv

A WN 10-900 RF

3 RF 2500-0.63 b

LWN100-150 RF Sch404/0b/forum.htm-16/A

PL450-6 RF0b1c440RF6s- k=90/0

BWN900-150 RF B=884

5 CM