This part of ISO 6935 specifies technical requirements for ribbed bars to be used as reinforcement in concrete.  

9.1 Tensile test  (ISO 6935-2 Ribbed bars rebar tensile testing machine) 

The tensile test shall be carried out in accordance with ISO 15630-1. 

For the determination of percenbtage elongation after fracture, A5,the original gauge length shall be 5 times the nominal diameter. 

For the determination of percentage total elongation at maximum force, Agt, equidistant marks shall be made on the free length of the test piece. The distance between the marks shall be 20 mm, 10 mm or 5 mm, depending on the bar diameter. 

For determination of tensile properties, the nominal cross-sectional area of the bar shall be used. 

9.2 Bend test (ISO 6935-2 Ribbed bars rebar bend rebend testing machine) 

The bend test shall be carried out in accordance with ISO 15630-1. 

The test piece shall be bent to an angle between 160° and 180° over a mandrel of the diameter specified in 

Table 7. 

9.3 Rebend test 

The rebend test shall be carried out in accordance with ISO 15630-1. The test piece shall be bent over a 

mandrel of the diameter specified in Table 8. 

The angle of bend before heating (ageing) shall be at least 90°, and the angle of rebend shall be at least 20°. 

Both angles shall be measured before unloading. 

9.4 Fatigue test (ISO 6935-2 Ribbed bars rebar fatigue tensile testing machine) 

The fatigue test shall be carried out according to ISO 15630-1. 

Below link you can find the UnitedTest testing machine for these test.