90 DEGREES NORMAL PIPE ANGLE INDICATION USED FOR ELECTRIC PIPING

摘要

PROBLEM TO BE SOLVED: To sharply reduce man-hours, experiences, and feelings in the case of bending work in electric piping work. SOLUTION: Pipes 15, 75 which are cut at optional angles are joined with each other by machine screws using couplings without screws, on the basis of an angle display of a 90 degrees normal pipe. Bending work by a vender is eliminated in a job site, and work becomes convenient, and useful.