HG/T 20592  法兰 WN 500(B)-25 RF0 G S=4m,s=61件f bbb=3 S=4(B)-10

wn500b-25rf0 G S=4m,s=61件f bbb=3 S=4(B)-10

SO15-150 RF /u

wn500b-10rf s)RFF0 K=12

WN 25(B)-160 RF S=3.54srj-2FS1 r45HSN Sch3)-25RF-1F s=2.

SO 2"-300 M

PL150(A)-10RF D=210 B=116 C

WN25-63RF=B=275E3

47021 crf350-1.

BI 273R.5()30 A=273 d=38t