Abstract: Satisfactory finishing quality could be produced with the edge milling machine to trim hot-rolled strip steel for manufacturing spiral welded pipe.Therefore selection of the cutter of the edge milling machine plays a very important role.Based on the analysis relating to the milling process,the cutting force and the cutting heat of the machine,the elements responsible for the service life of the cutter are identified.Accordingly,such a conclusion is made that appropriate determination of the milling technological parameters like milling speed and feeding rate,etc.,and proper selection of carbide cutter（tip）shall contribute to a longer service span of the cutter chuck and reduction of shutdown frequency of the operation line.