Scope of operations is presented, which is being realized by JSC "Tatneft" in the field of field equipment corrosion prevention. It is shown, that during the first stage at the beginning of activities on solution of operational reliability problem, most attention has been given to internal corrosion prevention on the basis of pipeline strings polyethylene coating technology application and joints of specific design. Presented are three types of coatings: bitumen-polyethylene, glue-smelt-polyethylene and three-layered epoxy resin coating-glue-smelt-polyethylene.