NB/T 47021  法兰 C-RF 550-0.6 RFch8040RF Sch

1 CRF 550-0.6 RFch8040RF Sch

BL 100-300 RF Sch40S

WN80-600 RF SCH40S0fm R..ha@b

WN 50(B)-16 RF S=8

PL40A-6RF16rf00 Sle

20623b wn750-150 rf

SO 2 1/2"-150 RF

SO 200(B)-16 RF

BL 600-2.5 RF

PL 40B-16 RF100=5RF@7@RF1F�.1һР�в„�=18 b=3/d00 S