NB/T 47021  法兰 RF 600-1.6=/C713 D=8

1 RF 600-1.6=/C713 D=8

1 M 350-1.6 δs=8RF3F S2)0SFRj RSCH40S2

1 RF 800-1.0 δs=12Spf s=100(a/for

WN100-10RF d=1570=RF SampampampampN500-1

3 fm700-2.5 spr RF0 RFRFrf1000-1@bl116

PL 15(B)-16 RF b=2 k=75 c=19

1 FF 800-0.6 δs=10

PL50(B)-25RFFp00-1/

LWN