NB/T 47021  法兰 RF 0-1.6/2m40RF Sch1

DN80-PN16 WN RF Ⅱh40S���@MRF Sch40R@4MRF@RF@41RF@RF@ δ1 RF0-1.62m40RF Sch1

SO 8"-150 RF

WN 80(B)-40 RF S=6.0

WN 40(B)-40 M C-RF146RFm50FF16RF R2.5 RJ1@6W

WN600-600RF S=25.083/

WN80-900 M Sch80e7a

BL 50-10 FF/

DN50-PN16 PL/P-A RF Ⅱ

SO