Street rain water gully, has flange forming supporting rings extending outward and inward from wall section, respectively, and telescopic section extending radially inward from section till inside of lower part and over axial length of part
摘要
<p>The gully has a flange (7) with a vertical wall section that has larger diameter than an upper edge of a lower part. The flange forms a base supporting ring extending radially outward from the section and a cover supporting ring extending radially inward to the section. A telescopic section (12) extends radially inward from the section till inside of the lower part and over a part of axial length of the lower part.</p>
