A New Extension Poles of Sleeve Type

Aiming the imported equipment was expensive and vulnerable for measuring high-temperature tensile yield strength Rp0.2,a new extension poles of sleeve type was designed.A pair of extension poles was composed by the outer sleeve and inner rod,thereby improving the shortcomings of the old extension poles including the complex structure and difficult operability,and improving the efficiency and reliability of test.At the same time,compared with the imported high-temperature extensometer,the new extension could be generalized base on low cost and ideal test results.