DIN EN 295-6:1995 Vitrified clay pipes and fittings as well as DIN pipe connections for wastewater pipes and sewers – ALA Part 6: Requirements for vitrified clay shafts
2013DIN EN 295-6:2013-05 Vitrified clay pipe systems for drains and sewers - Part 6: Requirements for components of manholes and inspection chambers; German version EN 295-6:2013
2013DIN EN 295-6:2013 Vitrified clay pipe systems for drains and sewers - Part 6: Requirements for components of manholes and inspection chambers; German version EN 295-6:2013
1995DIN EN 295-6:1995 Vitrified clay pipes and fittings as well as DIN pipe connections for wastewater pipes and sewers – ALA Part 6: Requirements for vitrified clay shafts