| 摘要 |
PURPOSE: A manufacturing method of a manhole cover is provided to manufacture a manhole cover easily and eco-friendlily and to prevent the slide by traffic in winter. CONSTITUTION: The manufacturing method of a manhole cover comprises the steps of: shaping a manhole cover mold provided with an input space to form many fitting grooves on the bottom(S1); after shaping the manhole cover mold, attaching an indicator provided with logo, figures or letters to indicate a police district or a use to the fitting groove(S2); after installing the indicator, placing input materials not to make the surface of the indicator buried under the input space(S3).
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