NB/T 47065.1  支座 A 3556

2 A3556

bii 5104

wn20(b)-40 rf s=4mpa1JsRF7.5ampampa(A

20592pl125-16rf f1=2.5b-25ff 40(b)-

BL500-16RF605g/t2SF15001

SP-4754

WN 4"-150 RF Sch5563

WN40-150 RF B=38

JWN 40×80(B)-16 RF S=41-0.6f s=5c

PL 125-10 RFB)-10RF S=6F RF2S Sch8S450 LMdSFMG