The mechanical properties of PE double surfaces steel-plastic composite belt was tested by the universal tensile testing machine

and the influence of the test gauge distance on the mechanical properties of PE double surfaces steel-plastic composite belt was studied. The results show that the test gauge is increased

the tensile strength of specimens decreased gradually. However

when the test gauge is larger than a certain length

the test scale distance has hardly any effect on the tensile strength of the steel plastic composite belt with double faces. The yield strength of PE double surfaces steel-plastic composite belt is positively correlated with the test scale because of the grain boundary sliding and the work hardening phenomenon.