Vis à tête hexagonale partiellement filetées — Grade B — Tige réduite (diamètre de tige approximativ...
La présente Norme internationale spécifie les caractéristiques des vis à tête hexagonale partiellement filetées de dimensions métriques, de 3 à 20 mm inclus de diamètre de filetage, à tige réduite (diamètre de tige = diamètre sur flanc de filet), de grade B. Si, dans des cas particuliers, des spécifications autres que celles figurant dans la présente Norme internationale sont requises, il est…
Mixing a test portion to which a mixed indicator (bromocresol green/alizarin red S) has been added with water by shaking. Comparison of the colour of the aqueous layer with that of a neutral solution of the indicator.
Specifies an acid washing test. Gives some indication of the degree of refining but does not give a precise measure of the amount of unsaturated compounds present as different unsaturated compounds produce different colourations with sulphuric acid. Shaking together of equal volumes of the sample and 95 % (m/m) sulphuric acid. Comparison of the colour of the acid layer with that of standard…
Applicable to products which consist essentially of xylene isomers ÄC6H4 -(CH3 )2 Ü and ethylbenzene (C6H5 -C2 H5). Specifies the requirements and test methods. The required characteristics are shown in a table.
Specifies dimensions and tolerances. Applies only to straight spot welding electrodes, where the electrode force Fmax given for diameter d1 in the table is not exceeded and where the centre lines of the electrodes are perpendicular to the workpiece. Contains also designation, materials and marking.
Unplasticized polyvinyl chloride (PVC) and metal adaptor fittings for pipes under pressure — Laying ...
Specification of the series of diameters to be used and the dimensions, which are common to all types of PVC- and metal adaptor fittings for pipes under pressure, to achieve connection to existing metal pipes, fittings and valves.
