| 摘要 |
The present invention relates to a manufacturing method for grating. A first reinforcement blade (13) and a second reinforcement blade (14) of an aluminum strut (10) are hit with a hitting unit (30) and a base unit (40) and are individually elongated towards each strut rod (20) in a semicircular shape. Compression units (13a,14a) are formed on the aluminum strut rods (20) horizontally penetrating the strut (10) to integrate the strut (10) and the strut rods (20) in a body. |
