This European Standard specifies the composition, property requirements including electrical properties, and tolerances on dimensions and form for seamless drawn copper tubes for electrical purposes, delivered in straight lengths with the cross-sections and size ranges below: - for round tubes with outside diameters from 5 mm up to and including 150 mm and wall thicknesses from 0,5 mm up to and including 20 mm; - for square and rectangular tubes with major outside dimension from 5 mm up to and including 150 mm and wall thicknesses from 0,5 mm up to and including 10 mm. The sampling procedures, the methods of test for verification of conformity to the requirements of this standard, and the delivery conditions are also specified.