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Know the Differences: TPEPE Coating vs 3LPE Coating

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TPEPE anticorrosive steel pipe and 3PE anticorrosive steel pipe are upgrading products based on the outer single layer polyethylene and internal epoxy-coated steel pipe, it is the most advanced anticorrosive long-distance steel pipeline buried underground. Do you know what is the difference between TPEPE anticorrosive steel pipe and 3PE anticorrosive steel pipe?

 

 

Coating Structure

The outer wall of the TPEPE anticorrosive steel pipe is made of 3PE hot-melt junction winding process.  It is composed of three layers, epoxy resin(bottom layer), adhesive(intermediate layer) and polyethylene(outer layer). The inner wall adopts the anti-corrosion way of thermal spraying epoxy powder, and the powder is evenly coated on the surface of the steel pipe after being heated and fused at high temperature to form a steel-plastic composite layer, which greatly improves the thickness of the coating and the adhesion of the coating, enhances the ability of bump resistance and corrosion resistance, and makes it widely used.

3PE anticorrosive coating steel pipe refers to the three layers of polyolefin outside anti-corrosion steel pipe, its anticorrosion structure generally consists of a three-layer structure, epoxy powder, adhesive and PE, in practice, these three materials mixed melting processing, and steel pipe firmly together, forming a layer of polyethylene (PE) anticorrosive coating, has good corrosion resistance, resistance to moisture permeability and mechanical properties, is widely used in the oil pipeline industry.

Performance Characteristics

Different from the general steel pipe, TPEPE anticorrosive steel pipe has been made internal and external anticorrosive, has a very high sealing, and long-term operation can greatly save energy, reduce costs, and protect the environment. With strong corrosion resistance and convenient construction, its service life is up to 50 years. It also has good corrosion resistance and impact resistance at low temperatures. At the same time, it also has high epoxy strength, good softness of hot melt adhesive, etc., and has high anti-corrosion reliability; In addition, our TPEPE anticorrosive steel pipe is produced in strict accordance with national standard specifications, obtained anticorrosive steel pipe drinking water safety certificate, to ensure the safety of drinking water.

3PE anticorrosive steel pipe made of polyethylene material, this material is marked by good corrosion resistance, and directly extends the service life of anticorrosive steel pipe.

3PE anticorrosive steel pipe because of its different specifications, can be divided into ordinary grade and strengthening grade, the PE thickness of ordinary grade 3PE anticorrosive steel pipe is about 2.0mm, and the PE thickness of the strengthening grade is about 2.7mm. As an ordinary external anticorrosion on casing pipe, the ordinary grade is more than enough. If it is used to directly transport acid, alkali, natural gas and other fluids, try to use the strengthened grade 3PE anti-corrosion steel pipe.

The above is about the difference between TPEPE anticorrosive steel pipe and 3PE anticorrosive steel pipe, mainly reflected in the performance characteristics and application of different, the correct selection of the appropriate anticorrosive steel pipe, plays its due role.

Introduction of 3LPE Coated Line Pipe

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Brief introduction:

The base material of 3PE anti-corrosive coating steel pipe includes seamless steel pipe, spiral welded steel pipe and straight seam welded steel pipe. Three-layer polyethylene (3PE) anti-corrosive coating has been widely used in the oil pipeline industry for its good corrosion resistance, water vapor permeability resistance and mechanical properties. 3PE anti-corrosion coating is very important for the service life of buried pipelines. Some pipelines of the same material are buried in the ground for decades without corrosion, and some are leaked in a few years. The reason is that they use different coatings.

Anti-corrosion structure:

3PE anti-corrosion coating is generally composed of three layers of structure: the first layer is epoxy powder (FBE) > 100um, the second layer is adhesive (AD) 170 ~ 250um, the third layer is polyethylene (PE) 1.8-3.7mm. In the actual operation, the three materials are mixed and integrated, which are processed to be firmly combined with the steel pipe to form an excellent anti-corrosive coating. The processing method is generally divided into two types: winding type and circular mold covering type.

3PE anti-corrosive steel pipe coating (three-layer polyethylene anti-corrosive coating) is a new anti-corrosive steel pipe coating produced by an ingenious combination of 2PE anti-corrosive coating in Europe and FBE coating widely used in North America. It has been recognized and used for more than ten years in the world.

The first layer of 3PE anti-corrosive steel pipe is epoxy powder anti-corrosive coating, and the middle layer is copolymerized adhesive with a branch structure functional group. The surface layer is high-density polyethylene anti-corrosive coating.

3LPE anti-corrosive coating combines the high impermeability and mechanical properties of epoxy resin and polyethylene. Up to now, it has been recognized as the best anti-corrosive coating with the best effect and performance in the world, which has been applied in many projects.

Advantages:

The common steel pipe will be severely corroded in the bad use environment, which will reduce the service life of the steel pipe. The service life of the anti-corrosion and heat preservation steel pipe is also relatively long. Generally, it can be used for about 30-50 years, and the correct installation and use can also reduce the maintenance cost of the pipe network. The anti-corrosion and heat preservation steel pipe can also be equipped with an alarm system, Automatic detection of pipe network leakage fault, accurate knowledge of fault location, and also automatic alarm.

3PE anti-corrosion and heat preservation steel pipes have good heat preservation performance, and the heat loss is only 25% of that of traditional pipes. Long-term operation can save a lot of resources, significantly reduce energy costs, and still have strong water-proof and corrosion-resistant ability. Moreover, it can be directly buried underground or in the water without an additional pipe trench, which is also simple, rapid, and comprehensive in construction. The cost is also relatively low, and it has good corrosion resistance and impact resistance under low-temperature conditions, and it can also be directly buried in frozen soil.

Application:

For 3PE anti-corrosion steel pipe, many people only know one thing and don’t know the other. Its function is really wide coverage. It is suitable for underground water supply and drainage, underground shotcreting, positive and negative pressure ventilation, gas drainage, fire sprinklers and other pipe networks. Waste residue and return water transmission pipeline for process water of thermal power plant. It has excellent applicability for the water supply pipeline of anti-spray and sprinkler systems. Power, communication, highway and other cable protection sleeve. It is suitable for high-rise building water supply, heat supply networks, waterworks, gas transmission, buried water transmission and other pipelines. Petroleum pipeline, chemical and pharmaceutical industry, printing and dyeing industry, etc. Sewage treatment discharge pipe, sewage pipe and biological pool anti-corrosion engineering. It can be said that 3PE anti-corrosion steel pipe is indispensable in the current construction of agricultural irrigation pipes, deep well pipes, drainage pipes and other network applications, and it is believed that through the extension of science and technology, it will still have more brilliant achievements in the future.

If you need any kind of anti-corrosion coating steel pipes such as 3PE coating steel pipes, FBE coating steel pipes and 3PP coating steel pipes, etc. Please contact us!