NB/T 47022  法兰 C-T 1000-2.5/20δ1=12

2 CT 1000-2.520δ1=12

wn 20a-150rf-1.6

wn150-300 rf b=140 c=3860RF=1)-D=42 A=85 R

wn350-16rf a=355.6 b=3

3 FM 600-6.420δ0=8

2 CM 1200-4.020δ1=6 d3=3.820615Sch-

3 CT 1900-0.620δ0=10=5S=46402 C=�╛sch40F2m0rf0f

47065.3 C4ch4092009Sc20/34RF50(b

BL