| 摘要 |
PURPOSE: A steel grating is provided to be easily installed or be easily maintained and to prevent burglar and a loss due to a back flow of rainwater or sewage. CONSTITUTION: A steel grating comprises a binding pin (12), a spring (14), and a cover body (16). The binding pin is installed between a vertical beam (13) of the edge and an adjacent vertical beam. One side of the binding pin is protruded to the outside of one of binding holes (11b) formed on the vertical beam on both side edges. The spring is installed between the adjacent vertical beam to the edge vertical beam and the other side of the binding pin in order to supply elasticity to the binding pin. The cover body is installed between the edge vertical beam and the adjacent vertical beam in order to wrap the spring to prevent the spring from being separated. |
