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NF F55-204 (12/1991) (R2011) Fixed railway equipment. Drawings and diagrams for electrical signalling installings. Graphic symbols. - Installations fixes ferroviaires
NF R15-602-9 (12/1991) (R2011) Road vehicles. Cooling fluids. Test methods. Part 9 : measurement of corrosion protection properties. Grid leak resistor method. - Véhicules routiers
NF R15-602-8 (12/1991) (R2011) Road vehicles. Cooling fluids. Test methods. Part 8 : measurement of corrosion protection properties. Hot plate corrosion method. - Véhicules routiers
NF R15-602-7 (12/1991) (R2011) Road vehicles. Cooling fluids. Test methods. Part 7 : measurement of corrosion protection properties. Glassware corrosion method. - Véhicules routiers
NF E22-179 (12/1991) (R2011) Mechanical transmissions. Woodruff keys. Dimensions and tolerances. - Transmissions mécaniques
NF E22-182 (12/1991) (R2011) Mechanical transmissions. Tangential keys and keyways. Dimensions and tolerances. - Transmissions mécaniques
NF A36-270 (12/1991) Iron and steel. Profiled plates in rolling direction. - Produits sidérurgiques
NF F13-012-0 (12/1991) (R2011) Railway rolling stock. Determination of comfort connected with an air-conditioning system for railway vehicles. Test. Generality. - Matériel roulant ferroviaire
NF F13-012-1 (12/1991) (R2011) Railway rolling stock. Determination of comfort connected with an air-conditioning system for railwau vehicles. Aeraulic test. - Matériel roulant ferroviaire
NF F13-012-2 (12/1991) (R2011) Railway rolling stock. Determination of comfort connected with an air-conditioning system for railway vehicles. Thermic test. - Matériel roulant ferroviaire
NF F13-012-5 (12/1991) (R2011) Railway rolling stock. Determination of comfort connected with an air-conditioning system for railway vehicles. Safety test. - Matériel roulant ferroviaire
NF F13-012-3 (12/1991) (R2011) Railway rolling stock. Determination of comfort connected with an air-conditioning system for railway vehicles. Electrical test. - Matériel roulant ferroviaire