Price of 3pe anti-corrosion steel pipe manufacturer for water supply pipeline

Description :

　　3pe anti-corrosion steel pipe, but if the water is cut off or the heating water is supplied, the degree of corrosion is still quite serious. Starting from the construction of the Seninglan pipeline, through bidding and the localization of all 3PE anti-corrosion materials, the prefabrication price of 3PE anti-corrosion has significantly decreased, marking the beginning of an era of widespread application of 3PE anti-corrosion in China. So far, 20000 kilometers of buried steel pipes have been coated with 3PE anti-corrosion coating for external anti-corrosion. During the repair process, rust stains on the surface of the steel should be removed using a grinding machine or manually, with a rust removal grade of St3 or higher. Regarding the use of 3pe anti-corrosion steel pipes for oil transportation, industry insiders point out that it is necessary to adhere to the principles of innovation and seeking new driving forces for professional development, and to accelerate the cultivation of new competitive advantages and growth points. Process pipelines for transporting corrosive media in industries such as petroleum transportation pipelines, chemical pharmaceuticals, and printing and dyeing. 3PE anti-corrosion and insulation steel pipes have good insulation performance, with heat loss only 25% of traditional pipes. Long term operation can still save significant resources, significantly reduce energy costs, and have strong waterproof and corrosion-resistant capabilities. They do not require pipe trenches and can be directly buried underground or in water. Construction is also simple and fast, and the overall cost is relatively low. They also have good corrosion and impact resistance under low temperature conditions, and can be directly buried in frozen soil in certain environments. The rust removal of 3pe anti-corrosion steel pipes for oil transportation mainly uses tools such as wire brushes to polish the surface of the steel, which can remove loose or raised oxide scales, rust, welding slag, etc. The PE pipe itself uses fusion splicing to connect and package the interface materials, completing the integration of the joint and the pipe with good sealing performance. Compared with the pipe body, its interface has higher tensile strength and explosive strength, which can effectively resist the circumferential stress and axial stress caused by internal pressure.

　　The main anti-corrosion methods for lining include cement mortar lining anti-corrosion steel pipes, which are widely used and have lower costs. Cement mortar lining anti-corrosion steel pipes use a cement mortar anti-corrosion layer to prevent corrosion of the pipeline. According to the skin effect and proximity effect, the butt weld generates a strong and concentrated thermal effect at the opening of the billet, which can quickly heat up to the required welding temperature and achieve intergranular bonding after being squeezed by the pressure roller. With the development of economy and technology, the use of 3pe anti-corrosion steel pipes for oil transportation has gradually been put on the agenda for pipeline anti-corrosion and has received attention from people. If it is required to meet the current industry standard requirements, the thickness of the sheet material should not exceed 60 μ m when extruding the adhesive layer, and multi-layer overlap should be used to meet the industry standard requirements. Otherwise, the adhesive layer thickness cannot be guaranteed to be 170-250 μ m. 3PE anti-corrosion steel pipes for oil transportation are used for conveying process water waste and return water pipelines in thermal power plants. With the continuous development of our country's economy and the vigorous development of the energy industry, long-distance oil and gas pipelines are an important way to ensure energy security. In the anti-corrosion construction process of oil (gas) pipelines, surface treatment of steel pipes is one of the key factors determining the service life of pipeline anti-corrosion. It is a prerequisite for whether the anti-corrosion layer can be firmly combined with the steel pipe. The application scope of 3PE anti-corrosion steel pipes is as follows: sewage treatment: sewage treatment discharge pipes, sewage pipes, and biological pool anti-corrosion engineering agriculture: agricultural irrigation pipes, deep well pipes, drainage pipes and other network coal mines: suitable for underground water supply and drainage, underground spraying, positive and negative pressure ventilation, gas drainage, fire sprinkler and other pipe networks in coal mines. The commonly used thermal insulation material of 3pe anti-corrosion steel pipe for oil transportation is rigid polyurethane foam, and the applicable temperature is -185~95 ℃. Since 1999, when China Petroleum Pipeline Anti corrosion Engineering Co., Ltd. independently designed and manufactured * 3PE anti-corrosion production lines in China, the localization of 3PE anti-corrosion technology has accelerated. 3pe anti-corrosion steel pipes are used for oil transportation. In addition, after steel corrosion, divalent iron and trivalent salt ions will pollute water quality, forming yellow water, rust water, rust slag blocking pipelines and pumps, causing problems such as poor water supply. According to statistics, China's annual steel production is 160 million tons. Over 60 million tons are lost annually due to corrosion. Almost equal to the annual output of Shanghai Baosteel Iron and Steel Plant. 3PE anti-corrosion and insulation steel pipes have good insulation performance, with heat loss only 25% of traditional pipes. Long term operation can still save significant resources, significantly reduce energy costs, and have strong waterproof and corrosion-resistant capabilities. They do not require pipe trenches and can be directly buried underground or in water. Construction is also simple and fast, and the overall cost is relatively low. They also have good corrosion and impact resistance under low temperature conditions, and can be directly buried in frozen soil in certain environments. At present, there are dozens of 3PE coating operation lines in China, which have the ability to process 3PE coatings on steel pipes with a diameter of 25-2800mm. The 3pe anti-corrosion steel pipe used for oil transportation will experience concentrated corrosion in areas such as welding seams and impurities, accelerating the corrosion rate in that area. Therefore, accidents such as corrosion, perforation, and water leakage often occur first in the welding seams, resulting in work stoppage, shutdown, and affecting people's lives.

　　3PE anti-corrosion steel pipe refers to a three-layer structure polyolefin coated external anti-corrosion steel pipe, which is a commonly used type of anti-corrosion pipeline in China. Other anti-corrosion methods include IPN8710, FBE epoxy powder, and epoxy coal tar. Generally refers to the anti-corrosion of the outer wall of steel pipes.

　　3PE anti-corrosion generally consists of three layers of structure:

　　*Layered epoxy powder (FBE>100um)

　　Second layer adhesive (AD) 170~250um

　　Third layer polyethylene (PE) 2.5~3.7mm

　　In practical operation, the three materials are mixed and integrated into one, and processed to firmly bond with the steel pipe to form an excellent anti-corrosion layer. Its processing methods are generally divided into two types: winding and circular mold wrapping.

　　Before performing anti-corrosion treatment on the 3PE anti-corrosion steel pipe base material, it is necessary to inspect and record the steel pipes entering the inlet platform, perform shot blasting and rust removal on the outer surface of the steel pipes, and then check whether the cleanliness and anchor depth of the outer surface of the steel pipes meet the requirements. If they do not meet the requirements, they should be polished and repaired with a hand grinding wheel. The pipe end should be wrapped with adhesive tape, treated with fine dust, heated to the required temperature at medium frequency, sprayed with epoxy powder, wrapped on the side of the adhesive extruder, and burned on the side of the PE extruder. The anti-corrosion pipes should be water-cooled, and qualified products should be marked by spraying. The pipes should be placed on the platform and stacked for shipment.

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