Metallic materials - Tubes (in full section) - Βend test

Specifies a method for determining the ability of full section tubes of circular cross-section with an outside diameter not greater than 65 mm to undergo plastic deformation in bending. The range of the outside diameter for which ISO 8591 is applicable may be more exactly specified in the relevant standard. Bend tests of the test pieces taken from tubes in the form of transverse strips shall be made in accordance with ISO 7438 so that the original curvature of the test piece is increased.