What is the knowledge about FRP pipes?

The corrosion resistance of FRP is the most critical and unique place of FRP products, in recent years, the application of corrosion-resistant FRP has made rapid progress, because of its particularity, until now has not developed a unified corrosion resistance test method. Although FRP has shown its excellent performance in corrosion resistance, the values of corrosion resistance tests carried out by various units are very different and there is no relative comparison. Epoxy natural resin, bisphenol A polyester natural resin, modified furan natural resin are mainly used in the paste holding products, phenolic natural resin is mainly used in model pressed products, and epoxy natural resin, phenolic natural resin, furan natural resin are mainly used in civil engineering anti-corrosion and facility lining anti-corrosion, and corrosion-resistant FRP is more and more widely used, but how to accurately and reasonably select corrosion-resistant FRP materials is a very sharp problem.

Corrosion Resistance Trial Methods Brief Introduction Up to now, all domestic units have implemented different corrosion methods, and the performance values are also different, all of which are static corrosion methods and related values in water. In order to help each unit to compare the value, to help to accurately select materials, the development of a unified, more reasonable FRP corrosion resistance method is often indispensable. It is known that there are several corrosion attempts listed below in China.

Short-term weight change verification method This method is soaked in water for a short time, 28 days of corrosion value, sampling time is fast, and the calibration verification method is mainly based on visual inspection and weight change. Because it is simple and fast, it has been mainly used for the construction of anti-corrosion FRP lining facilities until now. However, the value of this method is not reliable, and the soaking time in water is too short.

The variation and influence of flexural strength are small.

FRP products are good corrosion-resistant materials, first of all, with resin, let them condense into one, made of materials, its tensile strength is comparable to steel - hence the name FRP. Everyone should understand a little bit when you see this, because the hardness of this product is very high. The tensile strength of Linsen FRP products is close to, or even surpasses, carbon steel, and the specific strength can be compared with high-grade alloy steel.

Therefore, it has excellent results in aviation, rockets, spacecraft, automobiles, and other products that need to reduce their own weight. FRP (FRP pultrusion profile) is a good corrosion-resistant material, which has good resistance to atmosphere, water and general concentration of acids, alkalis, salts, as well as a variety of oils and solvents.

With the wide application of FRP chemical facilities, due to the difference between the actual use of things and the calibration method, only the value of one index is confirmed"Resistant or not"It is not in all aspects, for this reason, from all aspects of the quality management comprehensive method put forward Q, I quality index scoring method, to vote whether the facility can be used for a long period of time, although this method is more aspect, but the method is more complicated and trivial, overseas has begun to implement this approval method Long-term soaking in water comprehensive verification method This method is soaked in water for a longer time, with 6 months of soaking in water for the minimum approval time, usually up to about 1 year. Due to the confirmation of the tensile permeation mechanism of FRP, the dissolescence permeation has a considerable time capacity to reach the inner layer. The internal substance of the approval is mainly based on the comprehensive three indicators (i.e., the appearance of the specimen and the desolation, the weight change, and the preservation rate of flexural strength).

There are different opinions on the preservation rate of bending strength, and it is generally believed that the preservation rate is 50% after 1 year, which is the boundary between resistance and intolerance.

The FRP process pipeline is produced by microcomputer controlled fiber winding process, with excellent unsaturated polyester resin as the matrix, alkali-free glass fiber yarn and its products as the reinforcing material, and made by microcomputer controlled winding equipment.

The reason why it enjoys the reputation of "significant energy saving" is that it is characterized by the smooth inner wall and the small loss of the fluid conveying pressure head, therefore, the same flow can be selected with a smaller pipe diameter or a smaller power pump for long-distance transportation, and the large-diameter pipeline can also reduce the installation cost, reduce the insulation fee, cancel the anti-corrosion fee, and exempt the overhaul fee is a good deed of "prolonging life". Under frozen media, the pipe will not be frozen and cracked.

FRP process pipelines are often used for the transportation of drinking water due to their non-toxic characteristics.

It mainly has the advantages of chemical corrosion resistance, light weight and high strength, no scaling, strong seismic resistance, etc., and ordinary steel pipes have long service life, low comprehensive cost, fast installation, safe and reliable, etc.

Summary. Hello dear, <>

1) Corrosion resistance: Chemically inert material, excellent corrosion resistance, and different corrosion-resistant pipelines can be selected according to the conveying medium. (2) High mechanical strength:

The water pressure strength, external pressure resistance and impact strength are all good, and the pipes and pipe fittings can be designed and manufactured according to the required pressure. (3) Strong temperature adaptability: use temperature range:

More than -70 degrees Celsius and less than 250 degrees Celsius, the pipeline will not crack under frozen medium. <>

What are the characteristics of FRP pipes.

Hello dear, <>

1) Corrosion resistance: Chemically inert material, excellent corrosion resistance, and different corrosion-resistant pipelines can be selected according to the conveying medium. (2) High mechanical strength:

The water pressure resistance, external pressure resistance and impact strength are all good, and the pipes and pipe fittings can be designed and manufactured according to the required chain pressure. (3) Temperature adaptability slag call shed strength: use temperature range:

More than -70 degrees Celsius and less than 250 degrees Celsius, the pipeline will not crack under frozen medium. <>

4) Low fluid resistance: the inner wall of the pipe rotten hole is smooth, the roughness coefficient, and the pipe diameter can be reduced under the same flow rate. (5) Light weight and long life:

Light weight, convenient transportation, low construction cost, no maintenance, service life of up to 50 years to prepare for hunger. (6) Maintain water quality: non-toxic, transport drinking water, can maintain long-term water quality hunger and hygiene.

FRP pipe is a kind of lightweight, corrosion-resistant, high-strength non-metallic pipe, in recent years, the production of FRP pipe has developed rapidly, and the application range and department are getting wider and wider. So, let's share with you what are the standards for FRP pipes and what are the advantages of FRP pipes?

1. What are the standards for FRP pipes?

The standards for FRP pipes are as follows:

1. JC552-94 filament wound reinforced thermosetting resin pressure pipe.

2. GB T21238-2007 glass fiber reinforced plastic sand pipe.

3. GB T21492-2008 glass fiber reinforced plastic pipe jacking.

4. HG20520-92 FRP PVC composite pipeline design regulations.

5. HG T21633-1991 FRP pipes and fittings.

6. CECS190 glass fiber reinforced plastic sand pipe pipe.

7. MT FRP pipe.

2. What are the advantages of FRP pipes?

1. Corrosion-resistant and pollution-free.

FRP pipes have the properties of resisting acid, alkali, salt and seawater, and there is no erosion of treated sewage, corrosive soil or groundwater and chemical fluids. FRP pipes are non-toxic, rust-free, odorless, and do not need anti-corrosion, so they are widely used in the drainage industry.

2. Anti-fouling and moth-proof.

The surface of the FRP pipe is made of unsaturated polyester resin, and the surface looks clean and smooth, pollution-free, and will not be polluted by microorganisms such as shellfish and fungi in the ocean and sewage.

3. Heat-resistant and frost-resistant.

In the -30 state, the FRP pipe has good toughness and high strength, can be used in the temperature of -50 -80 for a long time, with a special formula resin, and can also work at a temperature of more than 110.

4. Good electrical insulation.

FRP pipe is a non-conductor, the electrical insulation of the pipe is very good, and the insulation resistance is 1012-1015cm, the most suitable for power transmission, the heat transfer coefficient of FRP pipe in dense areas of telecommunication lines and multi-mine areas is relatively small, only, it is five thousandths of steel, and the insulation performance of the pipeline is very good.

Article summary: The above is what are the standards of FRP pipes shared with you, and what are the advantages of FRP pipes, I hope to help you. If you want to know more about decoration, please continue to ****, and continue to update in the future.

China is a large country with a population of more than 1.3 billion, so even if each of us does not need so much water every day, the process of transporting water is huge. And the sewer organization is also very large and complex, so there are often water outages and so on where we live, but that was only a few years ago, and now it is rarely happening. Then, maybe many friends don't know, we don't often stop water now, and the sewer organization collapses, thanks to FRP pipes.

Those long and thick FRP pipes make our water more convenient, the sewer organization is also more comfortable, and some factories use it, and the efficiency is also greater. So today, let's take a look at this friendly pipeline, its characteristics and some of its uses.

FRP pipes

FRP pipe, just look at the name and know that it is a non-metallic pipe, and its main material is fiberglass. And this kind of glass fiber is a special glass fiber with a resin-based weight, and its production process is also very ingenious. It is made of glass fiber that is wound layer by layer on a rotating mandrel according to the process.

And it also has a sand layer made of quartz sand inside, so that the material can be more fully played. It not only has the same strength as metal steel pipes, but also improves its stiffness and makes the proportional steel pipes more stable and reliable.

Uses:

Due to some good characteristics and distinctive structure of FRP pipe, it is widely used in all walks of life. Now it is widely used in the petroleum industry, chemical industry, drainage industry and water supply industry. And it has developed faster and faster in China in recent years, and the demand is also increasing.

Features:

1.It has a good feature, that is, it will not produce secondary pollution when it comes into contact with water and other media, and it is also non-toxic, so it can be used as a pipe for transporting water. And it also has excellent corrosion resistance, so there is no need for anti-corrosion measures and some cathodic anti-corrosion protection.

Therefore, the service life is longer than that of ordinary pipes.

2.Because it is not all made of steel products, it is certainly lighter in weight than metal pipes, easy to transport when installed, and easier to install, speeding up installation.

3.Compared with general pipelines, FRP pipes of the same specification can increase the flow rate and reduce the resistance in the water, so as to reduce energy consumption.

4.The water pressure resistance and external pressure strength are better than those of ordinary pipelines, and they also have good impact resistance, so they can meet the required standards in many cases. Not only that, but it is also very adaptable to temperature, so it is also used in many petroleum and chemical industries.

Seeing this, do you feel that we are really very happy? Some problems we may encounter in life, there is always someone who will help us think about and deal with them in advance. Therefore, each of us should be grateful to the society.

You can get it for free

FRP pipe is a lightweight, high-strength, corrosion-resistant non-metallic pipe. This kind of pipe is made of resin as the matrix and glass fiber as the reinforcing material through a series of special processes. It has the characteristics of corrosion resistance, long life, strong designability, low resistance, no scaling, strong thermal insulation, and high comprehensive benefits.

It is widely used in industrial, petroleum, pharmaceutical, chemical and other industries.

FRP pipes include FRP cable pipes, plexiglass FRP air ducts, inorganic FRP air ducts, gelcoat FRP air ducts, FRP drainage pipes, etc., and the corresponding pipes are selected according to the specific use environment.

FRP pipe is a lightweight, high-strength, corrosion-resistant non-metallic pipe. It is a glass fiber with a resin-based weight that is wound layer by layer on the rotating mandrel according to the process requirements, and the quartz sand is evenly spread as a sand layer at a long distance between the fibers. The structure of the pipe wall is reasonable and advanced, which can give full play to the role of the material, improve the stiffness and ensure the stability and reliability of the product under the premise of meeting the use strength.

It has the following classifications:

According to the material, gre, grv, etc.

According to the caliber, various pipe diameters.

By brand, BondStraight, GT series.

FRP (Fiber Reinforced Plastics) is the general term for glass fiber reinforced composite materials, that is, the general term for glass fiber reinforced plastics, which includes:

GRE: Glass-reinforced expoxy GRE tubing is glass fiber reinforced epoxy resin tubing.

GRP: Glass-reinforced plastics GRP pipe is a glass fiber reinforced resin plastic pipe.

FRP is composed of matrix material and reinforcing material, due to the different matrix materials, we have called GRE, some are called GRP, the matrix material is generally resin, the reinforcing material is glass fiber, and other raw materials are added in the production process to obtain better performance, such as adding graphite or carbon fiber to obtain electrostatic conductive properties, using phenolic resin as the matrix material, you can obtain high temperature resistance, and can instantly withstand high temperatures of 3000 degrees Celsius. FRP pipes in recent years in the shipbuilding industry is very popular and concerned, special ships such as oil tankers, chemical tankers, offshore platforms and other ships of the ballast system, in the requirements of foreign shipowners are using FRP pipes and fittings, its advantages in addition to the aforementioned can conduct static electricity, there are many advantages, such as light weight, the general same diameter of FRP pipes only 35% of the weight of carbon steel pipes, in is resistant to seawater corrosion, the general FRP pipe manufacturers can promise: 50 years.

Its disadvantage is that it can withstand the pressure bottom and has a low elastic modulus. However, in the ballast system it is sufficient. GRE pipes have better tensile strength and pressure resistance than GRP pipes, so some people call GRE pipes high-pressure FRP pipes.