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NF T73-411 (03/1980) Anionic and non-ionic surface active agents. Determination of the critical micellization concentration. Method by measuring surface tension with a plate, stirrup or ring.
NF H44-023 (03/1980) Aerosol generators. Determination of the resistance of the empty containers to internal pressure. Verification of conformity to test pressure.
NF P82-215 (04/1980) (R2010) Electric or electrically operated hoist. Safety rules for the construction and installation of group III hoists serving a higher level by the opening of a trap door.
NF F00-006 (03/1980) (R2010) Railway material in general. Normalized screws with drilled heads. Sizes and locations of drillings.
NF L21-213 (03/1980) 120 degrees countersunk head rivets in aluminium alloys (rech.).
NF C52-123/A1 (03/1980) Transformers. Liquid dielectric drain valves.
NF L21-211 (03/1980) Mushroom head rivets in aluminium alloys (rech.).
NF L21-214 (03/1980) Raised 120 degrees countersunk head rivets in aluminium alloys (rech.).
NF L21-216 (03/1980) 90 degrees countersunk head rivets in aluminium alloys (rech.).
NF L21-212 (03/1980) Pan head rivets in aluminium alloys (rech.).
NF M88-514 (03/1980) (R2010) Dual material tanks for underground storage of liquid petroleum products. Steel exterior tank. Plastic interior tank.
NF L46-055 (02/1980) Wire gauze with square apertures and round wires.