NB/T 47065.2  支腿 a4SSch

2 a40SSch

47023 FF 550-6.441=57=3o 8107sc

20592 WN50-300 RFF S=16RFF S=4=/RF S

DN100/PN6/11b S=4

47023 RF800-1.6 H0300-1FMBL450(

5 T 550-1.020δ0=6

1 RF 600-1.0

LWN50-600 RF SC250/10R(d1/05F1O150-150

PL125(B)-16 RF BB=131 d=18700e220

WN 12"-1500