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CEN/TC 178/WG 3
Clay products
CEN/TC 165/WG 2
Vitrified clay pipes
NA 005-06-15 AA -dormant
Hollow clay tiles
NA 005-06-13 AA
Clay masonry units
NA 119-02-13 AA -dormant
Drain pipes from clay
CEN/TC 128/SC 3
Clay roofing tiles
CEN/TC 125/WG 9
Clay flooring blocks
CEN/TC 88/WG 20
Expanded clay lightweight aggregates
CEN/TC 166/WG 6
Clay/Ceramic and Concrete chimneys and components
NA 119-05-07 AA
Vitrified clay pipes and manholes for drains and sewers (CEN/TC 165/WG 2)