将底层板周边向上弯曲折边，将蜂窝型管状支撑件采用胶粘工艺固定在底层板的折边区域内。
The rims of the bottom plate are folded upwards, forming a ring-like area, whereupon the tubular supporting component is fixed by adhesive technology.
连接板(40)的自由端设有垂直于该连接板的折边(50)。
The free end of the connecting plate (40) is arranged wit a flanging (50) which is perpendicular to the connecting plate.
下水道防污盖，由孔板折边制成托盘形盖。
The utility model relates to an antifouling cover of a sewer.
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