HG/T 20592  法兰盖 BL 125-25 RF/ S=10 PL40=35H=8R

BL125-25 RF/ S=10 PL40=35H=8R

WN 14"-300 RF00

PL200(B)-6 RF D/44=-create

wn80(b)-25 fm s=7-16rf135R0rh40b=24F0›–=7-

PL500B-6RF

WN250-150 RF sc RF D=28s=m c=35

WN900-300 RF Sch447

WN50(B)-25 RF S=500rj&

SO50(B)-150 RF S=20

pl150-10rf d=330 a