NB/T 47065.1  支座 BⅠ 21910s=rf RF S

BI 21910s=rf RF S

PL50(B)-6FM0(B)-16RFh

SO 50(B)-25 M 150-150r

WN40-150 RF S=4.4

HP-25.5RFFFF3.0ch.0-

BL50(B)-16RF0.2 b245

WN20-150 RF0(

BL150-150RFБ∙��0

WN150-300 RF Sch40 B=

WN 150-150 RF Sch40S Sc10(B)=78 Samp2000-FRF-40Rrf D40690aaF0 R-40