Large Diameter Spiral Pipe Corrosion

Large diameter spiral pipe corrosion resistance depends on corrosion, corrosion coal tar epoxy is one of the components, so the protection methods vary. When anti-corrosion paint material reaches strengthen levels of large diameter spiral pipe atmospheric corrosion resistance increased significantly, but higher corrosion strength, although still improve corrosion resistance, but not obvious. The reason is that with a large diameter spiral pipe corrosion of processing time for processing, the type of change has become similar to the surface oxide formed on the surface of the oxide large diameter spiral pipe metal. This large diameter spiral pipe tightly adherent protective oxide surface to prevent further oxidation. This oxide layer is very thin, it can be seen through the large diameter spiral pipe natural luster surface, so large diameter spiral pipe has a unique surface. Moreover, if the surface is damaged, the exposed surface of large diameter spiral pipe and atmospheric reactions will self-repair, re-formation of this oxide "passive film", continue to play a protective role. Therefore, all of the large-diameter spiral pipe elements have a common characteristic, corrosion prevention corrosion resistance is the best way. General Pipe corrosion belong to chemical corrosion, slow, and in return generated after etching the surface of a thin, long and short brown rust, the role of water in the air to form perforated back slowly, this is called ulcers corrosion. It is different and electrochemical corrosion, electrochemical corrosion is to make the tube evenly thin. Corrosion caused by various accidents and major disasters. Because steel pipes, corrosion of equipment, causing producers downtime decline in product quality. Affect the life supply, gas, steam or hot water for heating, to bring a lot of people's lives difficult. Buried lose oil and gas, water pipes, leaking pipe network, enterprise refining, chemicals, chemical fibers, chemical fertilizers, pharmaceuticals and other pipes, equipment run, run, drip. In addition to the loss of a large number of useful substances outside also caused serious environmental pollution, and even cause a fire, explosion, collapse destroyed and other catastrophic accidents. Given the prevalence of metal corrosion. In order to prevent or slow metal corrosion. All kinds of metal corrosion technologies and processes have emerged. Promote the use of metal corrosion of new technology, new materials, new equipment. Extend the pipeline equipment life, save money and ensure safety in production. China's petroleum industry, public utilities and other industries. Pipeline due to corrosion perforation of 20,000 times / year. Which occurs mainly in the steel tube and pipe interface bump hurt themselves.