法兰 PL 450(B)-10 RF dS=6=32-2.5 δ1=42)=6M016 RF SFFF021=38

pl450(b)-10rf dS=6=32-2.5 δ1=42)=6M016 RF SFFF021=38

WN40 -40 FM104/500(b)-16 rf0 RF0/

BL450-25 RF SCH46S

HG/T20592 PL125(B)-16 RF

bl32-16rf216RF10 RF Sch40FSc/

bl80-300g3 b=45 M S=8 20- m4

B WN700-600 RF S 25

bl25(b)-300 rf.000456RF s=0 d=1755 FM

w