Development of technology of drawing sheetings on steel pipes

Materials and methods
Metals and alloys,data of industrial researches.
Results
Offered technology of drawing sheetings in comparison with analogs: 1. Increases reliability and durability of the put sheeting on external and internal surfaces of a pipe, due to control of stages of cleaning anddrawing protective coverings ona surface of pipes, by increase of corrosion resistance of an external and internal surface of a pipe, for the account: 1.1. Removals from external and internal surfaces of a pipe of all fatty typesof pollution, a rust, strong the linked oxides reducing adhesive durability between a surface of a pipe and a sheeting, salt deposits and other corrosion and active environments increasing corrosion activity on surfaces of a pipe; 1.2. Drawings on a rough surface of a pipe of a layer of a primer, thus increasing adhesive durability between a surface of a pipe and a sheeting, at theexpense of increase in surface area of a pipe; 2. Increases efficiency of a protective material because the protective material is put on external and internal surfaces of a pipe in the electrostaticway, and at dispersion to pipes betray arotary motion, that is the used volume of the protective swore at the uniform is distributed on all area of a covered surface that promotes economy of a protective material; 3. Excludes application of expensive materials as additional layers of a sheeting; 4. Reduces technological complexity and labor input as excludes drawing processes on a surface of additional layers of a sheeting (for example, a metal covering); 5. Puts sheetings on different types of the pipes which edges are calibrated under known types of connection that does a way to more technological.
Сonclusions
Introduction of this technology will allow to increase quality of made production, productivity and pipeline service life.