+7 (495) 674 04 71
+7 (495) 674 04 71
Emmedi Polyethylene Coating Equipments are based on our highly proven solid state based on IGBTs technology (inverter power over 2 Megawatt), which allows a consistant and proper heat treatment of the full body of the tube or pipe at a temperature which goes between 180°C to 240°C. The temperature of the tube is controlled by an optical pyrometer targeting the tube surface between inductor and PET extruder of the tube where is applied the polyethylene coating in order to comply with the American Petroleum Institute - API standards and American Society for Testing and Materials (ASTM) requirements.
Tubes and Pipes with polyethylene coating are guaranteed in working conditions which are typically between -40 and +80° C and they are proved to a test voltage insulation at 25 kV. The ordinary applications are of these coated pips are: oil and gas pipe lines, urban gas distribution, pipe line outdoor and so forth.
Indeed, the coating of metallic tubes and pipes with a polyethylene film extruded is an excellent modern process to protect tubes surface against chemical aggression due to the soil acidity, the corrosion due to the leakage currents, and mechanical aggression due to the ballast. Inductors are coaxial to the pipe, multiturns, water-cooled inside with deionized water and the typical gap to the tube is 60 to 150mm on the radius with an operating frequency are in the range 0,1 to 5 kHz.
