3pe corrosion seamless steel pipe manufacturer, 3pe corrosion seamless steel pipe suppliers, 3pe corrosion seamless steel pipe seamless steel pipe plant 3pe preservative manufacturers, 3pe corrosion seamless steel pipe suppliers, 3pe seamless steel corrosion 3pe corrosion seamless steel pipe plant manufacturers, 3pe corrosion seamless steel suppliers, 3pe corrosion corrosion seamless steel plants Guanghui what good do good anti-corrosion steel corrosion Guanghui how good the quality of high quality and advanced technology, price is not high customer back to the high probability 3PE anti-corrosion steel to make transportation of crude oil in the permafrost zone tube minimum heat loss and prevent pipes and heat exchange occurs permafrost, pipelines outer protective coating with external 3PE coating composite polyurethane insulation layer and a polyethylene outer sheath. 3PE coating and a non-polar polyethylene outer protective tube materials, composite coating polyurethane layer polar materials, weak bonding between the two, or melting permafrost heaving heavy process, likely to cause Tu layer shelling, need to be addressed, can be corona treatment. 3PE anti-corrosion steel electric shock corona treatment is a process, the principle is the use of high frequency, high voltage corona discharge on the surface to be processed to produce plastics and low-temperature plasma, these ions into the surface of the body electric shock and damage its molecular material structure, and then oxidizing the surface of the molecule and polarization to be treated, so that the plastic surface to produce free radical crosslinking reaction of the polymer, resulting in increased adhesion ability of the plastic surface. 3PE anti-corrosion outer surface with an outer corona processor, high-frequency voltage source, discharge coil composed of two parts, pipe as a ground pole. Process: water cooled after coating, the outer surface of a corona treatment carried 3PE After air drying, after the completion of, using a special cutting head means, splicing cut. Polyethylene outer sheath tube wall using corona processor inside, from high-voltage power supply, within the corona discharge electrode, outer corona discharge electrode composed of three parts. Process: inner electrode and the outer corona treatment device electrodes were installed on both sides of the inner and outer wall of the outer protective tube, and by moving the tractor pulling. The inner electrode is helical, foreign extremely flat shape, the discharge current is formed through the wall of the discharge circuit, in order to achieve a corona treatment. Corona treatment technology in the application of large pipeline projects, greatly improving the outer protection tube, bond 3PE coating and polyurethane layer between the surface tension coefficient of 52 × 10-5N / cm, the axial shear strength of 0.21 MPA, a coating to prevent shelling, avoiding the formation of an internal loop space, even if the outer protective layer of damaged water case also prevent the spread of water to prevent corrosion perforation. Promote the use of corona treatment is recommended in the relevant project. Bohai Sea Isle hundreds of anti-corrosion steel manufacturers vying Cangzhou Guanghui champion struggle upstream to midstream stop Feizhou waves splashing into the international arena