DIN 86111:1986 Welded-in deck screw caps for filling and sounding pipes
DIN EN 10025-2:2005 Hot rolled products of structural steels - Part 2: Technical delivery conditions for non-alloy structural steels; German version EN 10025-2:2004
DIN 87312:2016 history
2016DIN 87312:2016-05 Flat-ended keys for deck screw caps for filling and sounding pipes
2016DIN 87312:2016 Flat-ended keys for deck screw caps for filling and sounding pipes
1976DIN 87312:1976 Flat-ended keys for deck screw caps for filling and sounding pipes