The manufacturer provides long-term supply of 3pe anti-corrosion steel pipes, cement mortar anti-corrosion steel pipes, buried TPEP anti-corrosion steel pipes

Description :

　　The three-layer structure polyethylene anti-corrosion coating (3PE) combines the excellent properties of fusion bonded epoxy powder coating and extruded polyethylene anti-corrosion coating. It combines the interface characteristics and chemical resistance of fusion bonded epoxy powder coating with the mechanical protection characteristics of extruded polyethylene anti-corrosion coating, thereby significantly improving their respective performance. Therefore, as an external protective layer for buried pipelines, it is very superior. According to relevant information, three-layer PE can extend the service life of buried pipelines to 50 years. Currently, it is considered an excellent external anti-corrosion technology for pipelines internationally. In China, three-layer PE has been first applied in the oil and gas system. The Shaanxi Beijing natural gas pipeline and the Kushan oil pipeline that have been built in China, as well as the nearly 4000 kilometers of the national key project West East Gas Pipeline in recent years, have all adopted a three-layer PE external anti-corrosion coating. In Tianjin, the 67 kilometer high-pressure pipeline from Shaanxi to Tianjin, the 30 kilometer high-pressure natural gas pipeline from the outer ring line, and the 122 kilometer underground gas storage pipeline from Shaanxi to Beijing also use three-layer PE. It has become the development direction of external anti-corrosion coatings for pipelines in the future!

　　It is understood that in the early 1990s, China's 3PE anti-corrosion equipment and raw materials were imported from abroad. Since 1999, when China Petroleum Pipeline Anti corrosion Engineering Co., Ltd. independently designed and manufactured the first 3PE anti-corrosion production line in China, the pace of localization of 3PE anti-corrosion technology has accelerated. So far, China has not only been able to independently develop and produce 3PE anti-corrosion equipment and production lines, but also exported the equipment and production lines to foreign countries, occupying markets in Pakistan, Libya, Sudan and other countries. The intermediate frequency heating technology and electrostatic spraying technology in the production process have reached the international advanced level.

　　As we all know, the attitude of 3pe anti-corrosion steel pipes determines the quality. 3pe anti-corrosion steel pipes are an automated consumption line, and our factory's is a fully automated consumption line. From the appearance, the quality of the products should not have achieved much. All manufacturers are the same, but we carefully analyze that although it is automation, the order of automation is output by technical personnel, which fundamentally determines the final product quality. How to make the product stand out? We need to focus on the source and avoid any bias towards thickness. We know that the superior anti-corrosion function of 3PE anti-corrosion steel pipes is mainly manifested in their anti-corrosion density. After medium frequency low-temperature heating, epoxy powder, binder, and polyethylene dissolve underneath, forming a dense anti-corrosion layer that is very solid. However, carelessness during the operation process can lead to the detachment of the anti-corrosion layer from the pipe body, resulting in gaps and declaring the entire steel pipe invalid. How to prevent it? This is a fire test result. If the tube body reaches a certain temperature during intermediate frequency heating, powder can be sprayed.

　　The lifespan of the rust removal and anti-corrosion coating on the surface of 3PE anti-corrosion steel pipe manufacturers depends not only on factors such as coating type, coating quality, and construction environment, but also on the surface treatment of steel pipes, which accounts for about 50% of the impact on the lifespan of the anti-corrosion coating. Therefore, it is necessary to strictly follow the requirements of the anti-corrosion coating standards for the surface of steel pipes, continuously explore and summarize, and continuously improve the methods of steel pipe surface treatment. Using solvents and emulsions to clean the surface of 3PE anti-corrosion steel pipe substrates to remove oil, grease, dust, lubricants, and similar organic matter, but it cannot remove rust, oxide scale, welding flux, etc. on the surface of the steel, so it is only used as a technique in anti-corrosion production. The first step is to use wire brushes and other tools to polish the surface of steel, which can remove loose or oxidized scales, rust, welding slag, etc. Manual rust removal can reach Sa2 level, and power rust removal can reach Sa level. If there is a strong oxide scale attached to the surface of the steel, the rust removal effect of the object is not satisfactory, and the required anchor depth for anti-corrosion construction cannot be achieved. Acid washing treatment is usually carried out using two methods: chemical and electrolytic.

　　The days of 3PE anti-corrosion steel pipe manufacturers' products have been very advanced in technology. Below is a list of the process flow, hoping to provide a deeper understanding to a wide range of users. ⑴ Before processing, the anti-corrosion steel pipe manufacturer shall ensure that the appearance of the steel pipe is free of damage, double skin, cracks, depressions, etc. Unqualified steel pipes shall be screened, and only those that pass the inspection can be put into production. If the pipe opening shows a flat mouth phenomenon, it should be corrected by finding a circle in a timely manner, and those that cannot be corrected should be screened. Tianjin 3PE Anti corrosion Steel Pipe Factory will transport the steel pipes that require anti-corrosion treatment to the upper pipe channel of the production line, preheat the outer surface of the steel pipes, remove moisture, oil stains, impurities, etc., and control the heating temperature at 40 ℃~60 ℃. ⑵ The conveyor belt transports the steel pipe to the shot blasting rust removal machine for rust removal. Before rust removal, both ends of the steel pipe mouth should be sealed to prevent steel balls from flying into the mouth during the rust removal process. The surface of the rust removed steel pipe should reach Sa2.5 level. ⑶ After surface pretreatment, all rust, oil stains, oxide scales, etc. should be removed and cleaned.

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• 3PE anti-corrosion steel pipe