Ключевые слова:
Bitumens, Bituminous products, Roof coverings, Sheet roof coverings, Construction materials, Weather protection systems, Bituminous felts, Roofing felts, Reinforced materials, Flexible materials, Physical properties of materials, Mechanical properties of materials, Fire resistance, Conformity, Acceptance (approval), Quality control, Type testing, Marking, Technical data sheets, Chemical-resistant materials