1987NF P22-468:1987 Steel construction. Bolted joints with controlled tightening. Tightening by controlled turn of nut. Determination of the angle of rotation.
1986NF P22-473:1986 Metal construction. Welded assemblies. Ranges of non destructives control.
1981NF P22-800:1981 Metal construction. Preparation of parts in the factory.
1979NF P22-461:1979 Metal construction. Jointing by means of bolts with controlled tightening. Determinaiton of the conventional coefficient of friction.
1978NF P22-411:1978 Metal construction - Riveted assemblies - Execution of assemblies.