OpenLegislation

Division 3.2.5

Original text. Later amendments are not shown.

Sufficient ductility of metallic pipes shall be proved by a bend test according to ISO 8491. Bend radius r should be r ≤ 1,3 times the outer diameter D of the pipe. Bending angle α shall be 180°. After the test no cracks shall be visible. Alternatively the pipe material shall show at least 30 % elongation at break before cold forming or at least 14 % after cold forming.