| Descriptors | Firemens helmets, Industrial safety helmets, Helmets (protective), Firefighting equipment, Design, Roughness (surface), Durability, Field of vision, Rigidity, Fire resistance, Electrical testing, Impact testing, Mechanical testing, Fire tests, Specimen preparation, Artificial ageing tests, Thermal-shock tests, Thermal testing, Solvent-resistance tests, Marking, Instructions for use, Performance testing, Test equipment, Testing conditions, Protective clothing |