| 摘要 |
PURPOSE: A method for manufacturing a grating is provided to improve practicality and economical efficiency by forming a drain hole and a design portion in the grating through a laser welding process or a water jet process. CONSTITUTION: A method for manufacturing a grating having a drain hole and a design portion includes a step of preparing a metal plate used as a material for a grating(S1). Information related to a cutting portion and a design portion consisting of figures and characters is inputted into a machine(S2). The metal plate is cut into a predetermined size and is engraved with predetermined pattern by the machine having the information(S3). Then, a grating is formed by bending and welding the metal plate in the form of the grating. |
