Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 1: Impermeability test; German version EN 539-1:1994— 7 стр.
Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Tests for frost resistance; German version EN 539-2:1998— 19 стр.
Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 1: Impermeability test; German version EN 539-1:1994— 7 стр.
Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Tests for frost resistance; German version EN 539-2:1998— 19 стр.