Keyword: «relative expansion»

Currently, polypropylene pipes are quite widely used and their use in construction will only grow in the future. In areas of cold climate, their use is significantly constrained by temperature restrictions during installation and transportation. Physical and mechanical properties of polypropylene are given in the information sources mainly at a temperature of 20 ° C. To develop a technology for the construction of water supply systems at low temperatures, it is necessary to study the change in the properties of the polypropylene pipe material depending on temperature. This paper presents the results of tensile and impact strength tests of pipe polypropylene. A significant decrease in the relative expansion of the material of a polypropylene pipe with a decrease in temperature has been established.