Standard [CURRENT]
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This standard applies in conjunction with DIN EN 124 for round and square frames as well as manhole tops of class B 125 used for covering man entries and inspection chambers of drains and sewers. It contains specifications on the dimensions and materials of particulars and on marking. For design and test requirements and classification reference is made to DIN EN 124. DIN 4271-1 contains a summary of components.
This document replaces DIN 4271-2:1998-08 , DIN 4271-3:1998-08 .