Electrostatic spinnings were performed with the solutions of PAN/DMF to be nanofiber webs. The diameter of the fibers ranged from 200 nm to 1000 nm depending on the PAN concentration and on the applied DC voltage. The nanofibers were oxidatively stabilized and subsequently carbonized up to 1000℃ with carbonization yield of 40%. The bulk electric conductivity of the carbonized web increased form 6.8×10-3S/cm to 1.96 S/cm while the carbonizaton temperature increased from 700℃ to 1000℃.