Fire tube boilers are limited to a maximum design working pressure of ____________________?
A. 1 kg/cm
B. 6 kg/cm
C. 17 kg/cm2
D. 100 kg/cm2
E. 250 kg/cm2
A. 1 kg/cm
B. 6 kg/cm
C. 17 kg/cm2
D. 100 kg/cm2
E. 250 kg/cm2