| 摘要 |
<p>A window grille structure for a crime prevention is disclosed, which comprises a metallic pipe which is fixed at a window frame and has a hollow part; a filter which is filled into the hollow part of the pipe for enhancing a resistance force against a cutter with the filler being made of one selected from the group consisting of aggregate, silica and cement or made of a combination with the same; and a core which is inserted into the center portion of the pipe for preventing a weakening of the filler and increasing a density of the same by decreasing the pores.</p> |
