Heat-shrinkable tape began to be used in the oil and gas industry for long-distance transportation of oil and natural gas steel pipe weld joint anti-corrosion in the middle and late 1990s. At the beginning of this century, it was widely used in long-distance oil and natural gas steel pipe weld joint anti-corrosion, urban gas pipe network joint anti-corrosion, heating supply Anti-corrosion of joints of steel pipes and anti-corrosion of joints of water pipes. The meaning of this paragraph from steel pipe anti-corrosion. Corrosion status of oil and gas steel pipes. Introduction to heat shrinkable sleeves for anticorrosion of oil and gas steel pipes, requirements for heat shrinkable tapes for anticorrosion of oil and gas steel pipes, and application prospects of heat shrinkable tapes for anticorrosion in the oil and gas industry. The application of heat shrinkable tape in steel pipe anticorrosion.
Significance of steel pipeline corrosion prevention
Corrosion of steel pipes is widespread in all sectors of the national economy and national defense construction, which has brought huge losses to the national economy. It also caused great difficulties to production and life. Steel pipes are corroded at all times under natural conditions (atmosphere, natural water, soil) or man-made conditions (acid, alkali, salt and other media). A kind of spontaneous unnecessary consumption. The root cause of the steel pipes is that they are in a thermodynamically unstable state. Under the above conditions, they will return to their original relatively stable state. Generate iron oxides and carbonates. Or converted to soluble ions. This process is the corrosion process of metals. According to statistics, my country's annual steel output is 160 million tons. More than 60 million tons are lost due to corrosion every year. It is almost equal to the annual output of Shanghai Baosteel General Iron and Steel Plant. Corrosion is not only a waste of steel resources, but also shortens the service life of pipelines and equipment due to corrosion. The cost of replacing new pipeline equipment far exceeds the price of the metal material itself. Therefore, the production cost increases, reducing the economic benefits directly caused by corrosion. And the indirect economic loss is huge. Corrosion products form a scale layer, which affects heat transfer and media flow rate and heat transfer efficiency is reduced. This greatly increases energy consumption. The annual economic loss caused by corrosion in my country is as high as 280 billion yuan, which is more than the total of natural disasters such as wind disasters, floods, earthquakes and fires. More.
Corrosion causes various accidents and major disasters. Due to the corrosion of steel pipes and equipment, production enterprises have stopped production and the quality of products has deteriorated. It affects the life supply, gas supply, heating steam or hot water, and brings many difficulties to people's lives. Leakage of buried oil, gas and water pipelines and pipeline networks, leakage, leakage, and dripping of pipelines and equipment for enterprise refining, chemical, chemical fiber, fertilizer, and pharmaceuticals. In addition to the loss of a large number of useful materials, it also caused serious environmental pollution, and even caused catastrophic accidents such as fire, explosion, and collapse. In view of the widespread existence of metal corrosion. In order to prevent or slow down the occurrence of metal corrosion. Various metal anti-corrosion technologies and processes have emerged. The promotion and application of new metal anti-corrosion technology, new materials and new equipment. Extend the service life of pipeline equipment, save money and ensure safe production. my country's petrochemical, public utilities and other industries. The pipeline is perforated 20,000 times per year due to corrosion. It mainly occurs at the joints of steel pipes and the bumps of the pipe itself.
