ISO 7800 Metallic materials — Wire — Simple torsion test ISO 9649 Metallic materials — Wire — Reverse torsion test. ASTM A938 Standard Test Method for Torsion Testing of Wire GB/T 239.1,  GB/T 239.2 Metallic materials — Wire – torsion test. Steel Wire Simple Torsion Testing Machine Application: The Electronic Wire Torsion Testing Machine is mainly used to test the anti-plastics deformation for metal …