PURPOSE: To improve the centripetality and straight going performance of a saw blade by forming many tooth tip sections of tooth into arc shape having centers on the longitudinal center line of the saw blade.

CONSTITUTION: The respective tooth tip sections 3P, 5P, and 7P of straight tooth 3, right set tooth 5, and left set tooth 7 are ground in arc shape with the grinding wheel GW of which the center is set up on the longitudinal center line L of a saw blade. The cutting started from the acute angled tip sections 3T at both the sides of the tooth tip of the tooth 3 makes cutting performance excellent and makes it hard to wind in cutting a workpiece W. And because the shape of the respective tooth tips of the group consisting of the tooth 3 and set teeth 5 and 7 are is arc shape, the centripetality and straight going performance are made to be excellent.