The price of 3PE anti-corrosion steel pipes for oil and gas transmission pipelines includes tax

Description :

　　The peeling method of 3PE anti-corrosion coating is proposed based on the analysis of the structure and coating process of 3PE anti-corrosion coating. There are two main ways to peel off the 3PE anti-corrosion coating: at room temperature (20 ℃± 5 ℃) and at a temperature of 50 ℃± 5 ℃. Room temperature peeling and high temperature peeling. Room temperature peeling is usually carried out at room temperature, with a requirement of 100N/cm. After the formed tube is discharged, it is cooled to room temperature. The newly discharged tube has high requirements for the adhesive layer, which can now be met by well-known domestic manufacturers. The steel pipe needs to be heated to above 50 ℃± 5 ℃, with a requirement of 70N/cm. The above requirements come from GB23257-2009, and the specific experiment depends on the standards of Party A. But if the temperature is too high, the following problems may occur: the curing reaction of epoxy powder is too fast, the powder melting is not sufficient, the film formation is poor, and the bonding ability with the steel pipe surface will be reduced; Before the adhesive coating, the functional groups of the epoxy resin are excessively eliminated.

　　TPEP anti-corrosion steel pipe is a type of pipe with internal and external anti-corrosion properties, while 3PE anti-corrosion steel pipe only refers to external anti-corrosion. Therefore, TPEP anti-corrosion is superior to 3PE anti-corrosion in terms of anti-corrosion effect. External 3pe internal fusion bonded epoxy anti-corrosion steel pipe is an upgraded product based on the external single-layer polyethylene internal epoxy composite steel pipe, and is currently the anti-corrosion form of steel pipes for buried long-distance pipelines. Let's take a look at the pictures below: 3pe anti-corrosion steel, tpep anti-corrosion steel pipe, tpep steel pipe is different from ordinary steel pipes. It has undergone internal and external anti-corrosion treatment, and anti-corrosion treatment has no harm to drinking water. It has extremely high sealing performance, and long-term operation can greatly save energy, reduce costs, and protect the environment. Strong corrosion resistance, quick construction, and a service life of up to 30-50 years.

　　PE also has good corrosion and impact resistance under low temperature conditions, with low water absorption rate (less than 0.01%). Simultaneously possessing high epoxy strength, low water absorption of PE, and good flexibility of hot melt adhesive. Zhongwei Station is currently a joint construction station of three large natural gas long-distance pipelines, namely West First Line, West Second Line, and Jingbian Connection Line. It is the hub of various natural gas channels from northwest to central China, east China, and south China. In 2017, the gas volume reaching Zhongwei node was 1079.0 × 108m3, including supplying 149.5 × 108m West First Line, 266.0 × 108m West Second Line, and 248.7 × 108m Shaanxi Beijing Line system. Zhongwei Guiyang Connection Line has a capacity of 62.5 × 108m3.

　　The anti-corrosion coating of 3PE anti-corrosion steel pipes is crucial for the service life of buried pipelines. Some pipes made of the same material will not corrode for decades, while others will leak after a few years. Because they have different external coatings. High anti-corrosion reliability. The service life of 3PE anti-corrosion steel pipes has always been a concern for people. The number of production personnel for 3PE anti-corrosion steel pipes is increasing. 3PE anti-corrosion steel pipes have a complete production process abroad, and their service life has also attracted people's attention. The three-layer polyethylene anti-corrosion coating (3PE) combines the excellent performance of fusion bonded epoxy powder coating and extruded polyethylene coating. It combines the interface characteristics and chemical corrosion resistance of epoxy powder coating with the mechanical protection characteristics of extruded polyethylene coating, thereby significantly improving its performance.

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