3pe straight seam steel corrosion latest offer US6270847B1 US Patent discloses a pipe coating internal cooling method, which pumps placed inside the pipe, sprinkler pipe to the pipe wall in the rotation, pipe coating and cooling sequence is as follows: steel , FBE layer, an adhesive layer and a PE layer. Pipe heat transfer speed enables fast cooling pipe and coating, and because the cooling process of the coating from the inside out, 3PE anti-corrosion pipe coating adhesion during contraction and better cooling wall, coating the hoop stress is small, weld bead coating thinned very small, thus improving quality and reducing cost of raw materials corrosion. But this internal cooling method difficult to achieve. The so-called anti-corrosion steel pipe 3PE or divided into two, one is the other is a 2PE 3PE anti-corrosion steel pipe corrosion, including corrosion anti-corrosion steel structure 2PE oil layers, the first layer is the adhesive, the second layer is a polyethylene , integration of the two materials, the thickness of each layer is the same, and there is a three-layer anti-corrosion steel 3PE the PE coating, the first layer is epoxy powder, the second layer is an adhesive, the third layer is polyethylene, three kinds of material integration, and a strong bond with the steel to form an excellent coating. 3PE anti-corrosion steel pipe which include base metal spiral, straight seam and seamless pipes, etc., in our country is widely used in petroleum, chemical, gas and heat as well as waste water treatment, water, bridges, steel, marine piling and other water pipeline engineering fields, the factors that affect the performance of PE anti-corrosion steel coating is more, where as the layout of each step, equipment selection, surface quality, heating, painting temperature, cooling, transmission accuracy, material properties, and detection, and control will result in poor coating adhesion small, too thin, cracks or bubbles and other defects, strict implementation of norms and methods of scientific work on the control deficiencies, the yield is crucial to ensure that anti-corrosion pipe. 3PE anti-corrosion pipe insulation function is good, only 25% of heat loss out of traditional pipe, long-term operation can save a lot of power, significantly reduce power costs. Highly waterproof and resistant to erosion, without attached trench can be directly buried in the ground or water, the construction is simple agility and lower total cost. At low temperatures premise also has excellent resistance to corrosion and impact resistance, can be directly buried permafrost. The service life of up to 30-50 years, the use of devices and allows accurate network maintenance costs low. You can set the alarm system, automatic detection pipeline leakage problems, accurate indication of fault status and active alarm.