What is the difference between PP pipe and cast iron pipe and PPC

First of all, PP pipe is a generalized word, divided into PP pipe, PPR, PPB, if you refer to PP pipe, it is a pipe produced with low solubility copolymerization or PP pipe recycling, simply say PP:

Advantages: Non-corrosive: PP pipes can withstand corrosion by high concentrations of acids and alkalis in the range of pH over a wide temperature range, in the range of 1 to 14.

Wear-resistant, non-scaling: the inner wall of PP pipe and pipe fittings is uniform and smooth, the flow resistance is small and no scaling.

Reduced vibration and noise: PP pipes have excellent sound insulation properties, which can significantly reduce vibration and noise caused by liquid flow.

Anti-freeze cracking: PP material has excellent elasticity, so that the cross-section of the pipe and pipe fittings can expand with the liquid of frost heaving without swelling.

Anti-condensation, less heat loss: PP material is a poor conductor of heat, which can reduce condensation and reduce heat loss.

Simple installation: PP pipe is light in weight, easy to install and operate, and has weldability.

Long service life: The PP pipe system has a service life of up to 50 years under the specified use conditions. (Please note that this 50 years has specific conditions, not every PP pipe can be used for 50 years, because plastics are easy to age, and generally cannot meet this standard, unless several large domestic factories produce PPR with such a guarantee.)

Disadvantages: high cost: pipes are now acceptable with the continuous promotion, the copper and stainless steel fittings used in pipe fittings are specially made, and the temperature change coefficient of these metal fittings is required to be strictly consistent with the temperature change coefficient of PP-R materials, and now it also needs to be imported from abroad.

2. There is a problem that it is inconvenient to connect with the metal valve.

3. Worse rigidity and impact resistance than metal pipes.

The expansion coefficient of the 4th line is large, and there are more pipe supports and hangers required for open or overhead laying, which affects the appearance.

5 Inconvenient welding.

6. Poor UV resistance, easy to age under long-term sunlight.

7 PP-R pipes are flammable materials and should not be used in fire water supply systems.

Cast iron pipes can be compared with PP pipes, the advantages and disadvantages are obvious, because of personal experience problems I will not continue to write the characteristics of cast iron pipes, please forgive me! If satisfied

PP, PE, PVC are the abbreviations of the English names of plastics, and the Chinese people are popular names for them. They are polypropylene, polyethylene, and polyvinyl chloride. Another example is PTFE is polytetrafluoroethylene, FEP is fluorinated ethylene acrylic copolymer 、..

The difference between stainless steel pipe and PPR pipe is about the following 9 differences.

1. Different materials: stainless steel water pipe is a metal material, which is healthy and environmentally friendly, and PPR water pipe is a plastic material.

2. Different service life: stainless steel water pipes are used for more than 70 years, with the same life as the building, and there is no need for maintenance in the later stage; The service life of PPR water pipes is 15-20 years, and the cost of maintenance and replacement is high.

3. The strength of the pipeline is different: the stainless steel water pipe material has high strength, can withstand the instantaneous pressure of 89MPa, and the stainless steel does not rust or age; The strength of PPR water pipe material is less than one-tenth of that of stainless steel, and it will break when knocked on.

4. Different pressure-bearing capacity: stainless steel water pipes have high pressure-bearing capacity, pressure resistance, and metal pipes are preferred for high-rise water supply; PPR water pipes have a low pressure bearing capacity, which is especially unsuitable for high-rise water supply.

5. Different pipeline deformation: stainless steel water pipe has a small thermal expansion coefficient and will not produce deformation; The thermal expansion coefficient of PPR water pipe is large, and the deformation is severe and bent after a period of use.

6. Different environmental protection and health: stainless steel water pipes are green and healthy, and will not precipitate harmful substances and cause secondary pollution to water sources; Red water, smelly water, environmental hormones, plasticizers have always been a problem with plastic pipes.

7. Different flow influences: the inner wall of the stainless steel water pipe is smooth, not easy to foul, and does not affect the water flow; The inner wall of the PPR water pipe is rough and prone to fouling, and after many years of use, the water flow decreases.

8. Aging: 304 food-grade stainless steel does not rust or age; PPR water pipes are easy to age, become hard and brittle, and are more likely to burst.

9. Water leakage hazard: stainless steel water pipe leakage hazard is small, and double clamping connection technology can ensure that the pipeline will never leak; PPR water pipe has low pressure, thermal expansion deformation, aging and brittleness, etc., which are easy to cause joint leakage.

The material is not the same.

PPR pipes are divided into cold and hot water pipes, and the corresponding pipe walls and pressure resistance degrees are different, and the hot water pipe walls should be thicker.

The outlets of the hot and cold water pipes are generally hot on the left and cool on the right, and the spacing between them is 15cm ---20cm, and the two outlets must be parallel.

PP-R is lightweight, corrosion-resistant, non-scaling, long service life, non-toxic and hygienic. Thermal insulation and energy saving. Good heat resistance. Long service life. Available for **.

PP-R has good welding performance, pipes and fittings can be connected by hot melt and electric fusion, easy to install, reliable joints, and the strength of its connection parts is greater than the strength of the pipe itself.

Comparison of 304 thin-walled stainless steel water pipe with PPR water pipe.

1. 304 thin-walled stainless steel water pipe.

Stainless steel tubing is a healthy material that can be implanted into the human body. Stainless steel pipe is a kind of water supply pipe commonly used in Western countries. Stainless steel water pipes have been used in developed countries for many years and have become the current development direction and trend.

The double compression connection method forms a hexagonal pressure port through physical compression, which has the characteristics of tensile resistance, impact resistance and extremely low leakage rate. The stainless steel material is safe and non-toxic, extremely stable in performance, corrosion-resistant, will not cause secondary pollution to water quality, and maintains water safety, hygiene and health, which is the best choice for direct drinking pipes. With the development of the national economy and the improvement of people's quality of life, 304 thin-walled stainless steel pipe has become a new trend in China's water supply system.

2. PPR water pipes.

As a mainstream pipe in society, PPR pipe can be used as both cold water pipe and hot water pipe in daily life. The PPR pipe interface method can be completely fused together by using hot melt technology, and the operation process needs to be very skilled, otherwise the pipe wall will easily lead to rough inner wall of the pipe due to the shrinkage of hot melt, scale accumulation, and bacterial microorganisms, which will be easy to cause problems and blockage after a long time.

PPR pipes have the advantages of light weight and low price, but they are not suitable for use as hot water pipes. Long-term use of PPR pipes at high temperatures can change their structure, release toxic substances, and pollute water quality. Moreover, in Chinese society, families live in a high concentration, the water pressure on the upper floors is low, and the water flow is small, which affects our quality of life, and the increase in work pressure may burst pipes.

PPR water pipes are commonly used, and the reasons for the low penetration rate of stainless steel water pipes are probably as follows:

First, the first factor.

The cost of 304 thin-walled stainless steel water pipes is higher than that of ordinary ppr plastic pipes.

2. Consumer cognition.

Haven't heard of stainless steel drinking pipes and don't know their advantages. The advantage of stainless steel drinking pipes is that they need to be used for a long time to get a deeper understanding.

3. Installation services.

The installation of stainless steel drinking water pipes has a certain degree of professionalism, plumbers need systematic training, and many plumbers lack the corresponding professional skills and tools.

The aging problem of PPR pipe is more prominent, sunlight, temperature, chemicals, mechanical factors, time will cause its aging, aging plastic is prone to occur under the impact of water pressure and water hammer, and the service life is greatly reduced. In addition, the hot melt joining method is prone to water leakage or material deterioration at the joint. The inner wall of the stainless steel water pipe for home improvement is smooth and not easy to scale, the water pipe is permeable and fluid, has antibacterial, is not easy to breed bacteria, and has the characteristics of non-toxic, non-polluting, can be used and has a long service life.

PPC pipe is defined as follows:

PPC pipe is a kind of polymer material of PET, the full name is polyethylene terephthalate Senga, the application is very gentle and wide, it is caused by the dehydration and condensation reaction of ethylene terephthalate. PET is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide range of temperatures, with a long-term use temperature of up to 120, excellent electrical insulation, and even at high temperature and high frequency, its electrical properties are still good, but the corona resistance is poor, creep resistance, fatigue resistance, friction resistance, and dimensional stability are very good.

PET is divided into fiber-grade polyester chips and non-fiber-grade polyester chips. Fiber-grade polyester is used to manufacture polyester staple fiber and polyester filament, and is the original spring mold material for polyester fiber enterprises to process fiber and related products, and polyester is the largest variety of chemical fiber.

PP pipes are also called polypropylene, which are widely used in life, which can be used in drinking water transportation and have also been widely used in heating systems. What is the difference between PP pipe and PPR pipe? On the basis of PP pipe, PE material is added to become PPR pipe, and the full name of PPR pipe is called type III random copolymer polypropylene, which has better performance than PP pipe.

Let's burn the nuclear to understand the relevant knowledge of PP pipes.

What is the material of PP pipe?

PP pipe is made of polypropylene, this material has a feature is safe and non-toxic, and can be reused in the later stage, which is used in the laying of indoor hot and cold water. In addition, because this material is resistant to high temperatures, it can also be used for floor heating, the characteristics are relatively stable, resistant to corrosion, wear, not easy to produce scale, and the anti-freezing performance is also very good.

What is the difference between PP pipe and PPR pipe

1. The raw materials are different.

PPR pipe is an improved material, the full name is called type III random copolymer polypropylene, its process is added to five to ten percent of PE material, higher flexibility, and PP pipe polypropylene pipe, is not improved.

2. The performance is different.

PPR pipes are more flexible than PP pipes, so their performance is more stable and will not be brittle at low temperatures, while PP pipes do not have this characteristic, which is easy to become brittle due to low temperatures, and the performance is also unstable, and the performance is worse than PPR pipes.

1. Different use: PP-R pipe is the most economical and practical product of the current water supply pipeline, and the Ministry of Construction is vigorously promoting the use, and the home improvement water pipe is now basically using PPR water supply pipe. PPB pipes are also commonly known as hot melt pipes, and this material is not only suitable for cold water pipes, but also for hot water pipes, and even pure drinking water pipes.

2. Different logos: all unofficial names such as "ultra-fine particle modified polypropylene pipe" and "PPE pipe" are pseudo PPR water pipes (the regular identification is: PPR pipes for cold and hot water).

3. Different materials: PPR water pipes are white matte or matte of other colors, and pseudo PPR water pipes are bright or particularly brightly colored. PPR water pipes are completely opaque, and pseudo-PPR water pipes are slightly or semi-transparent.

Good low temperature impact resistance, low temperature embrittlement point is -5, high temperature resistance is poor, and the applicable temperature range is 0 60.