NB/T 47021  法兰 C-RF 1000-1.6/20δs=16fM2061

1 CRF 1000-1.620δs=16fM2061

WN 50-150 RF Sch10S9â¦ãƒâF/54

so450(a)-16rf500-0RF 3/8024105-1

lwn80-600rj-00082TSS=0

WN 25-150 RFu350

SO50A-40RF00FFFРѕЎл�

BL150(B)-16FM)RF

WN400(B)-300Rf S/H40S45

JWN 45×80(B)-16 T S=7o4rd26RF640

C-47023 RF