When people buy steel pipes for their piping systems, we always see pipes being required to be coated with epoxy resin, such as 3PE or FBE. So what do you know about epoxy coated (3PE or FBE) pipes? Under what circumstances should it be used?
FBE pipes are coated with epoxy resin coating. So we say fusion bonded epoxy pipe.
3PE pipe is coated with epoxy resin inside, bonded layer in the middle, and polyethylene layer outside.
3PE and FBE epoxy coated/coated steel pipes are widely used in pipeline systems for transporting fluids such as oil, gas, and water. They have strong resistance to corrosion by chemicals, moisture, harmful environment, etc.
FBE coated pipe is a Fusion Bonded Epoxy coated steel pipe. It is an external thermal resin for pipes. A dry powder with a thickness of 400-600 microns is applied to the heated surface of the pipe. Once the FBE is applied to the pipe surface, the FBE film provides an extremely hard surface with strong adhesion to the pipe surface. The FBE layer is in a uniform form and has good chemical resistance. If You Are Finding FBE Coating Double Flanged Bend And En545 Double Flanged Bend In China, We Will Be Your Best Choose! We Have Our Own Factory, So We Can Give You A Cheap Price!
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Advantages of FBE coated pipe are ease of application, lack of contamination, excellent resistance to high temperatures (-40°C to 85°C).
High strength and bending resistance.
Strong adhesion, good integrity, and resistance to soil stress and abrasion.
FBE coated steel pipes are usually buried in soil and underwater at temperatures between -40 to 85°C.
On the other hand, the drawback of the FBE pipe is that it is not very resistant to mechanical properties and wet conditions.
Developed in the s and industrialized in the s. There are two types of FBE pipes: one layer and two-layer pipes. FBE double-coated pipes are recommended for offshore pipelines and pipeline systems operating in harsh environments, where they offer high performance in terms of impact resistance and flexibility. It provides proper protection for the coating during transportation and construction.
And FBE single-layer coated pipe is the general type of FBE coated pipe. It provides a rough, non-slip surface for pipes that require a concrete coating. A special fusion bonded epoxy resin powder is mixed with solid epoxy resin and other adhesive materials that help adhere to the surface of the pipe.
3PE epoxy coated steel pipe is three layers of coating, one layer is FBE coating, the middle is adhesive layer and the outside is polyethylene layer. 3PE coated pipe is another new product developed on the basis of FBE coating since the s, which contains adhesive and PE (polyethylene) layers. 3PE can strengthen the mechanical properties of pipe, high resistance, water resistance, wear-resistance, and aging resistance.
It can protect the pipe from heat loss which is only 1/4 of the pipe.
3PE epoxy coated pipe includes 3 layers.
The first layer is fusion-bonded epoxy resin, whose thickness is more than 100μm. (FBE＞100μm)
The second layer is adhesive, whose function is to bond epoxy resin and the PE layer. (AD: 170~250μm)
The third layer is the PE layer, polyethylene has the advantages of waterproof, resistance, and resistance to mechanical damage. (φ300-φmm)
Therefore, 3PE coated pipe combines the advantages of FBE and PE. It is more and more widely used in the buried pipelines to transport water, gas, and oil.
In the case of manufacturing equipment, 3PE coated steel pipe manufacturers can also do FBE coated pipe.
3PE anticorrosion steel pipe is usually used in all kinds of engineering pipeline projects. Since it is carbon steel pipe is widely used in pipeline systems for transporting oil, natural gas, water and other fluids.
In this case, they should have high resistance to chemical corrosion, moisture, harmful environment and other corrosive properties. Therefore, it is necessary to make the pipeline coating with corrosion resistance.
Therefore we usually use 3PE, 2PE, FBE anti-corrosion and another lining anti-corrosion method. Usually use 3LPE coating, including 3 layers of polyethylene. 3PE anti-corrosion steel pipe has good impact resistance, abrasion resistance, impact resistance, acid resistance, high quality and long service life.
What is 3PE anti-corrosion steel pipe?
3PE, we also called 3LPE. 3PE anticorrosion steel pipe is a coating method for carbon steel pipe. Whether it is welded steel pipe, stainless steel pipe or alloy steel pipe, nickel alloy pipe or seamless steel pipe with CRA cladding or lining pipe, all of them can be coated with 3PE on the pipe.
Apart from 2PE, 2PP and 3PP, 3PE coating is the most commonly used method of corrosion protection. The manufacturing process of these coatings is similar but the raw materials are different. The manufacturing process of this 3LPE is very simple. And it has good corrosion resistance and excellent anti-corrosion effect.
This cheap anti-corrosion process is generally accepted worldwide. 3PE can enhance the mechanical properties of the pipeline, high resistance, waterproof, wear-resistant and anti-aging. It can protect the pipeline from heat loss which only accounts for 1/4 of the pipeline.
Usage of 3PE anticorrosion steel pipe
We use 3LPE anticorrosion steel pipe in long distance transmission of natural gas, crude oil and refined oil. It is also used in city gas piping systems, storage tanks and trench piping systems.The main use of 3PE is to protect pipelines used in the power and communication industries as well as water piping systems.
Layers of 3PE anti-corrosion steel pipe
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As the name suggests, 3PE coating includes 3 layers.
The first layer of 3PE coating:
Fusion bonded epoxy resin, thickness >100μm.(Thickness of FBE coating >100μm)
Second layer of 3PE coating:
Adhesive layer. It bonds the epoxy resin and PE layer. (Thickness of the second layer is 170 to 250 μm.)
Third 3PE coating:
PE layer. The thickness is 2.5mm to 3.7mm. It is polyethylene, which has the advantages of resistance to water, electricity and mechanical damage. This is a very important layer.
From the layer of 3PE, you will find that 3PE anti-corrosion steel pipe has the advantages of FBE and PE. It is more and more widely used in underground pipelines for the transportation of water, gas and oil. This also means that if a factory has 3PE coated steel pipe manufacturing equipment, they can also manufacture FBE coated pipe.
Properties of 3PE anti-corrosion steel pipe:
High sealing. It saves energy, reduces cost and protects the environment in long-term operation.
High corrosion resistance. The builder is simply speedy. The service life is up to 30~50 years.
Good corrosion resistance and impact resistance, low water absorption. PE at low temperature (less than 0.01%).
High strength epoxy resin. PE absorber and hot melt adhesive flexibility, etc. with high corrosion reliability.
Features and advantages of 3PE anti-corrosion steel pipe
Long service life
3PE anti-corrosion steel pipe can be extended for more than 50 years. This is because the 3PE coating has good stability and anti-aging properties under normal working temperature and pressure conditions.
Corrosion resistance performance
The elements of PE structural stability are high. Therefore, we can use it to prevent the corrosion of natural gas, LPG, man-made gas and other chemicals. And it doesn't need secondary anti-corrosion equipment. Soil chemicals using 3LPE coating will not have any effect on the steel pipe.
Flexibility
3PE coating is a flexible material that breaks after extending 5 times. Easy to bend without damage.3PE coated steel pipe can be bypassed to reduce installation costs.
Superior Impact and Vibration Resistance
One of the important features of 3LPE coating is that 3pe is not fragile at low temperatures. The temperature is safe in the range of -60℃ ~ 60℃. So it can adapt to the downpipe shutdown in winter.3PE pipe has good impact properties, so it is not easy to break.
Tests show that the abrasion resistance of PE pipe is 4 times that of bare steel pipe. Especially for conveying slurry, PE coated pipe has better abrasion resistance compared to painted steel pipe.3PE has a smooth surface with a mating factor of 0.009.
3PE coated steel pipes have a smooth inner surface and non-stick properties, resulting in higher water transfer capacity and reduced pressure loss during transportation.
The low water permeability properties of 3PE coated steel pipe improve its isolation from seawater compared to other coating systems and FBE coated pipes.
PE material is a green material, non-toxic and harmless. It does not add heavy metal stabilizers to the manufacturing process of 3LPE coated steel pipes. 3PE can be recycled and therefore does not pollute the environment.
These properties make PE pipes suitable for flammable and explosive conditions.
Safe and Reliable Connection
3PE coated steel pipe mainly adopts heat fusion and heat fusion connection to keep the interface and the pipe connected as a whole. No water and gas leakage.
Lightweight, easy to move, easy to construct
The weight of 3PE is very light. It only accounts for 1/8 of the weight of steel pipe. it is easy to move and bend. It is easy to move, bend, and its welding process is quick and easy. It has obvious economic benefits in the whole project.
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