HOLE SAW FOR BORING POLYETHYLENE PIPE FOR WATER DISTRIBUTION

摘要

PROBLEM TO BE SOLVED: To provide a hole saw for boring a polyethylene pipe for distribution water to efficiently bore a hole, communicated with the water flow port of a corporation cock, in a distribution water pipe formed of high density polyethylene and prevent the occurrence of an influence due to chips. SOLUTION: A hole saw 2 coupled to the rotary shaft 21 of a drive part through a shank 4 consists of a device forming a cutting edge 6, a deep hole 5, and a groove 7 and provided on the opening side with a helical groove 8 and is covered with a guide pipe 3. The hole saw 2 is inserted in the water flow port of a corporation cock and by boring by the cutting edge 6, chips generated by boring are contained in the deep hole 5 of the hole saw 2. The cutting edge 6 consists of a single blade or a plurality of blades.