DIN 4034-1 - DRAFT

DIN 4034-1 - DRAFT Draft Document - Prefabricated concrete manholes, unreinforced, steel fibre and reinforced - Part 1: Requirements, test methods and marking for drains and sewers in addition to DIN EN 1917:2003-04

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2023