NB/T 47021  法兰 RF 500-1.6/4.aS

1 RF 500-1.64.aS

bl40-6RFвүӨh12Frf b=Р’Сһ0f2=4.0 R=508 Nf40ch8RFscRF°В ШўВ

DN40-PN10 PL/P-B RF I

WN 65-150 RF Sch16S7”53400mpam1schForum.2009

1 CRF 500-0.6 δs=60s=6Ff-h12

SO 200(B)-16 RF b=4

WN50-150RFM-2.5/4

bl80(b)-16rf b

SO80-25R