Composit representatives perform field supervision of exploitation of our rubber hoses at the objects in Tatarstan republic. The extracting material is sand and gravel mix, that is singularity of these objects. Transportation of this mix seriously affects on abrasive wear of exploited equipment. Currently works of sand and gravel extracting are carried on the junction of the rivers Kama and Volga. Composit hoses are used for supplying non-stop working of pumps at the dredgers with hydracyclones. The dredgers are equipped with these hoses to carry out works of maximum performance. After visit to the objects of sand and gravel extracting in Tatarstan republic our representatives have found out that Composit production is successfully exploited in conditions of raised abrasive wear.