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This Amendment has become necessary as the requirements in subclause 4.2.2 relating to the tolerances on diameter and out-of-roundness of steel service pipes have been rendered more precise and Annex C "Calculated Continuous Operating Temperature (CCOT)" has been revised.
This document replaces DIN EN 253:2009-07 .
This document has been replaced by: DIN EN 253:2015-12 .