Wangtebei testing machine

bolts wedge loading tensile testing machine,screw wedge loading tensile testing machine 1.introduction This bolts and screws wedge loading tensile testing machine can determine the tensile strength on finished bolts and screws, the integrity of the transition section between the head and the unthreaded shank or the thread. Wedge loading of finished bolts and screws, this testing device is rigid to ensure that bending occurs on the transition section between the head and the unthreaded shank or the thread. 2.test  method ISO 376 Metallic materials-calibration of force-proving instruments used for the verification of uniaxial testing machines ISO 7500-1 metallic materials-verification of static uniaxial testing machines- parts 1: tension/compression testing machines-verification and calibration of the force-measuring system ISO 6892-1 metallic materials-tensile testing-part 1:method of test at room temperature GB/T 3098.1 mechanical properties of fasteners –bolts ...

So many kinds of testing machines. Choose right testing machine with following key factors As we all know, there are many types of testing machines, and different types of testing machines can test different materials. In addition to different application ranges, different test machines have different characteristics in terms of structural design and performance. Then what factors should be paid attention to in the purchase of the testing machine? This article introduces some of the testing knowledge of the testing machine. First, the test machine load selection According to the actual determination, the maximum load of the testing machine is selected. In general, the maximum load of the testing machine is optimal in the range of more than 70% and less than 90%. This range not only ensures the accuracy of the test results but also ensures that the life of the test machine is not affected. Second, the choice of accuracy level The accuracy of the test machines on the...

300KN Computer control steel strand steel rod tension stress relaxation testing machine test method GB/T 10120-1996 metal stress relaxation test method ASTM E328-2008 Material and Structural Stress Relaxation Test Method ISO 15630-3-2010 steel for the reinforcement and prestressing of concrete-test methods part 3: prestressing steel MS 1138-2 prestressing steel-part 2:cold drawn wire MS 1138-3 pressing steel-part 3:steel bars (Quenche and tempered) MS 1138-4 prestressing steel-part 4:strand (first revision) Technical Parameters Maximum test   force 300kN Test force   measurement range 6-300kN   full range without file Test force   accuracy Better than   the indication value ±1% Test force   resolution 10N Speed   adjustment range 0-40mm/min Attachment   specifications (can be used repeatedly) Φ6.3mm,   Φ9.3...