What is PPR tube

PP-R pipe is also called three-type polypropylene pipe. It has the characteristics of light weight, corrosion resistance, no scaling, and long service life. There are many manufacturers of PP-R pipes, and there are differences in quality. Once leakage occurs and losses are huge, it is recommended to use well-known brand products and choose a professional construction team.

PPR pipe is officially called random polypropylene copolymer pipe, which is currently the most used water supply pipe in home improvement projects. PPR pipe brand (National Authority quality testing products):

The common PPRs currently on the market include Zhongcai, Weixing, Kinder, Philippine Specialties, Liansu, and Rifeng.

The interface of the PPR pipe adopts hot-melt technology, and the pipes are completely integrated. Therefore, once the pressure test is installed, no leakage will occur and the reliability is extremely high. However, this is not to say that the PPR pipe is a water pipe with no defects, and its high temperature resistance and pressure resistance are slightly inferior. The long-term working temperature cannot exceed 70Â°C; each length is limited and cannot be bent, if the pipe is laid long or at a corner In many cases, a large number of joints are used during construction; the pipes are cheap but the parts are relatively expensive. In terms of comprehensive performance, PPR pipe is currently the most cost-effective pipe, so it has become the preferred material for the renovation of home-installed water pipes.

There are three main colors of PPR tubes on the market: white, curry, and green. Why there is such a difference? The dealer's answer is caused by differences in the raw materials PPR particles and fillers used. Curry color is a better quality PPR tube.

Generally, in the hydropower reform, the original water pipes will be replaced. Home improvement companies and merchants all use hot water pipes when they are advising the fitters to install PPR pipes. Even hot water pipes are used where cold water flows through. Their argument is that because the technical parameters of hot water pipes are higher than those of cold water pipes, and the prices are not much different, hot water pipes are used for waterway reconstruction. Another fact is that even if you want to buy cold water pipes, it is difficult to buy them on the market because cold water pipes only supply the tooling market and do not supply the home improvement market.

The pipe diameter of the PPR pipe can be from 16mm to 160mm. The main types used in home decoration are 20mm and 25mm (commonly referred to as 6-pipe and 1-inch pipe, respectively), of which 4 pipes use more. The diameter of PP-R pipe is outside diameter [Note].

First, what is a PP-R pipe?

The PP-R pipe is also called a three-type polypropylene pipe. The random copolymer polypropylene is extruded into a pipe and molded into a pipe fitting. It is a new type of plastic pipe product developed and applied in Europe in the early 1990s. PP-R was a new generation of pipeline material by the gas-phase copolymerization process in the late 1980s. It allowed about 5% of PEs to randomly and uniformly (random copolymerization) in the molecular chain of PP. It has good impact resistance and long-term creep performance.

2. What is the relationship between PP-R and PP-C?

In the previous period, PP-C pipes and fittings appeared on the domestic market, and the installation method was the same as PP-R. Many people do not understand the difference between PP-R and PP-C, causing many misunderstandings and confusion. In the international standards, polypropylene hot and cold water pipes are divided into PP-H, PP-B, and PP-R. There is no PP-C. The PP-C pipe on the market is actually a PP-B pipe, and its raw material is a block copolymerized polypropylene pipe special material. PP-B pipe is a type of hot and cold water pipe, the price is relatively cheap, and its heat and pressure resistance performance is very different from that of PP-R. For example: using conditional grading 2, design pressure 0.6MPadn25mm pipe, PP-R pipe wall thickness 3.5mm, PP-B (PP-C) pipe wall thickness 5.1mm; design pressure 0.8MPadn25mm, PP-R pipe wall thickness 4.2mm PP-B (PP-C) cannot be used. Because the required wall thickness is too thick. PP-C pipes with the same structure size and PP-R on the market have much lower operating conditions and cannot be mixed with PP-R pipes. Even after determining the conditions of use, PP-C pipes are replaced by PP-C pipes. The use condition 2 indicates a design temperature of 70Â° C. for hot water supply.

Third, what are the characteristics of PP-R tube?

In addition to the characteristics of light weight, corrosion resistance, non-fouling, and long service life, PP-R pipe has the following main features:

1, non-toxic, health. The raw material molecules of PP-R are only carbon and hydrogen elements, and no harmful toxic elements are present. It is hygienic, not only for hot and cold water pipes, but also for pure drinking water systems.

2, insulation and energy saving. The thermal conductivity of the PP-R tube is 0.21w/mk, which is only 1/200 of the steel tube.

3, better heat resistance. The Vicat softening point of the PP-R tube is 131.5Â°C. The maximum working temperature can reach 95Â°C, which can meet the requirements of the hot water system in the building water supply and drainage specification.

4, long service life. The service life of PP-R tube can reach more than 50 years under the operating temperature of 70Â°C and working pressure (PN) 1.OMPa. The working life of the PP-R tube can reach more than 100 years under normal temperature (20Â°C).

5, easy installation, connection can be *. PP-R has good welding performance. Pipes and fittings can be connected by hot melt and electrofusion. It is easy to install, and the joints can be used. The strength of the joints is greater than the strength of the pipe itself.

6, the material can be recycled. After the PP-R waste is cleaned and broken, it is recycled and used in the production of pipes and fittings. The amount of recycled materials does not exceed 10% of the total amount and does not affect the product quality.

What are the main uses of PP-R pipe?

1. Cold and hot water systems of buildings, including centralized heating systems;

2. Heating systems in buildings, including floors, wall panels and radiant heating systems;

3, can be directly drinking pure water supply system;

4, central (central) air conditioning system;

5, transport or discharge chemical media and other industrial pipe systems.

5. What is the difference between PP-R pipe and several plastic hot and cold water pipes?

See table varieties

6. How to use PP-R pipe for safety and economy?

1. Pay attention to the determination of the overall use coefficient C (ie, safety factor) of the pipeline:

General occasions, and long-term continuous temperature <70 Â°C, optional C = 1.25; in important occasions, and long-term continuous use temperature â‰¥ 70 Â°C, and may be a longer time to run at higher temperatures, optional C = 1.5;

2, for cold water (â‰¤ 40 Â°C) system, use P.N1.0 ~ 1.6MPa pipe, pipe fittings;

Used for hot water system selection â‰¥ PN2.0MPa pipe, pipe fittings.

3. After considering the above three principles, the SDR of the pipe fittings shall not be greater than the SDR of the pipe material, that is, the wall thickness of the pipe fittings shall not be less than the wall thickness of the pipe material of the same specification.

7. What problems should be paid attention to in the installation and construction of PP-R pipe?

1. PP-R pipe has lower hardness and poor rigidity than metal pipe. It should be protected during handling and construction to avoid mechanical damage due to improper external force. Mark the location of the pipe after the concealment in order to avoid secondary decoration and damage to the pipe.

2, PP-R pipe below 5 Â°C there is a certain low-temperature brittleness, construction in winter should be careful, when cutting pipe with a sharp tool to cut slowly. The pipes that have been installed must not be heavily pressed or struck, and if necessary, they should be covered with protective materials that are vulnerable to external forces.

3. The PP-R tube is susceptible to aging degradation due to long-term exposure to ultraviolet light, and must be coated with a dark protective layer when installed outdoors or in direct sunlight.

4, PP-R pipe in addition to metal pipe or water connection using threaded inserts or flanges and other mechanical connection methods, the rest should be used hot melt connection, so that the pipeline integration, no leakage point.

5. The coefficient of linear expansion of the PP-R pipe is relatively large (0.15mm/mÂ°C). Technical measures must be taken to prevent the pipe from distending deformation during the installation of the surface-mounted or non-buried pipe.

6. After the pipeline is installed, it must be pressure tested before sealing (direct burying) and covering the decorative layer (non-buried dark deposit). The test pressure of the cold water pipe is 1.5 times the working pressure of the system, but not less than 1 MPa; the test pressure of the hot water pipe is 2 times the working pressure, but not less than 1.5 MPa. Pressure test time and method specification.

7. When the PP-R pipe is applied with open or non-buried pipe, the support and hanger must be installed as required.

Production Standard: GB/T18742-2002

Edit this paragraph PPR pipe quality identification

The real PP-R pipe should meet the standard GB/T18742-2002 Â«Plastic pipe system for hot and cold water - PP part 2 pipe>> Pipe fittings should meet the standard GB/T18742-2002 <<Pipeline system for hot and cold water --PP Part III Pipe Fittings; The performance of pseudo PP-R pipes and fittings cannot pass the above criteria. It should be pointed out that the service life of the pseudo-PP-R pipe is only 1-5 years, and the service life of the real PP-R pipe is more than 50 years.

PPR tube - how to choose

PPR pipes are widely used in industrial and residential buildings, and are sanitary drinking water and hot water heating. PPR pipes are divided into two kinds of hot and cold water pipes. Cold water pipe wall is thin, hot water pipe wall thickness, so the performance of hot water pipe in the resistance to fracture is much better, the price of hot water pipe is also more expensive than the cold water pipe. Many manufacturers, for the sake of insurance, crack the hot and cold water pipes in the construction process and increase the safety factor.

1. A good soft PPR pipe, the pipe is not easily deformed by extrusion, even if the deformation does not break, and greatly reduce the amount of joints.

2. Corrosion-resistant and waterproof scaling PR-R The chemical properties of pipes and fittings can resist the erosion of chemical elements in the water, while the smooth inner surface can avoid the formation of scale.

3. High temperature resistance, high pressure resistant PR pipe, pipe fittings with a water pressure of 45 kg/cm2 at room temperature, tube deformation temperature of 112 degrees Celsius

4 long life PPR pipe, pipe anti-aging strong, the normal role of more than 50 years mission.

5. Construction is simple and fast PPR pipe, the flexibility of the pipe fittings makes the construction become very fast, and easy to connect (socketed with hot melt machine socket), safe and reliable.

6. Economic Benefits Due to the simple construction, there is no contradiction and impact with other projects, and the construction period is shortened. The construction cost is 60% less than that of copper pipes, and it has superior economic efficiency.

Therefore, consumers must be cautious when purchasing, be sure to choose the right, large manufacturers, quality assurance of the pipe, in addition to the installation, there are some points of attention, may wish to listen to expert advice.

Experts suggest that professionally-trained skilled workers must operate. At the same time, the process flow is also very important. In accordance with the principle of horizontal and vertical, a deep groove larger than the diameter of the water pipe should be grooved in the foundation ground of the room, and then the PPR pipes should be laid, followed by sequential hot melt connections one by one. After all the PPR interfaces are combined using hot-melt technology, a pressure test of more than 24 hours is required. If the on-site environment permits, the pressure test time can be longer. When it is ensured that there is no leakage of water seepage, it will be landfilled.

Villa design entrance decoration home decoration design air conditioning price room decoration

Previous
What is Nessie Elbow?

Next
What is insulating tape

There is a limited number of on-site group buying activities. Register now

Related Reading

Ppr pipe how much money one meter ppr pipe prices

PPR is an abbreviation of Polypropylene-Random, commonly known as polypropylene type III. PPR pipe is a renewal product of galvanized pipe, UPVC water supply pipe, aluminum plastic pipe, PE pipe, PE-X pipe, PE-RT pipe. Because of its use of random copolymer technology, the strength and high temperature resistance of polypropylene have been well ensured, thus becoming the main force of water pipe materials. Many people are not quite clear about the price of ppr water pipes. Let's let Xiaobian introduce you.

2015-04-13 14:09:08

Change the knowledge of PP-R pipe involved in water

PP-R (Poly Propylene Random) is a random polypropylene copolymer, which is a new type of water pipe material commonly used in developed countries.

2009-09-14 16:53:54

Qi Family Classroom: The Difference Between PPR Pipes and PPC Pipes

2010-03-09 10:03:27

Ppr pipe what brand good ppr pipe ten brands recommended

PPR pipe is a renewal product of galvanized pipe, UPVC water supply pipe, aluminum plastic pipe, PE pipe, PE-X pipe, and PE-RT pipe. Because of its use of random copolymer technology, the strength and high temperature resistance of polypropylene have been well ensured, thus becoming the main force of water pipe materials. So what brand of ppr pipe is good? Before buying, it is very necessary to understand the brand information of the product. Today, Xiao Bian has a look at what are the top ten brands in the list of ppr pipes. I hope to provide some references for your purchase.

2015-04-13 14:03:04

Why choose PP-R water pipe fitting?

PP-R (Poly Propylene Random) is a random polypropylene copolymer, which is a new type of water pipe material commonly used in developed countries.

2010-01-13 16:48:48

There have been 0 comments

submit

Recommended Area Popular Atlas Popular Information Popular Questions and Answers Hot Products

House decoration entrance design air conditioning price entrance decoration home decoration entrance entrance decoration simple home decoration entrance design home decoration entrance design entrance design villa entrance entrance decoration design decoration entrance design entrance decoration hallway entrance decoration decoration entrance Chinese entrance decoration entrance entrance shoe display effect desk picture Balcony Tatami Decoration renderings Interior design renderings Mediterranean style decoration pictures Small bathroom renderings Furniture pictures Encyclopedia Living room floor tiles Mosaic effect diagram Shoe cabinet renderings Wardrobe Interior design Cabinets La basket brand Cabinet Which brand Good floor waxing Feet Flooring prices Integrated Water Heater Restaurant Ceiling Buying Tips King Kong Security Window Screen Price Faucet Filter Overall Wardrobe Floor Plan Overall Wardrobe Picture Overall Shower Room Effect Picture Overall Shower Room Picture Overall Kitchen Color Effect Picture Overall Kitchen Design Effect Picture Overall Kitchen Design Whole Kitchen Design Drawing Kitchen Decoration Effect Drawing Chinese Style Wall Chinese Style Decoration Cost Chinese Style Study Chinese Style Decoration Wallpaper Traditional Chinese Style Home Chinese Style Now Chinese Style Chinese Style Decoration Company Indoor Simple style how to clear the toilet how much money wardrobe top ten brands of water purifier top ten ranking Lin gas water heater how to do what in addition to formaldehyde living room curtains what color good bathroom brand ranking microwave how to use the crown tile how NVC lighting price NVC ceiling lamp NVC lighting LED lights NVC Lighting prices NVC Lighting Schneider Sockets Schneider Circuit Breakers Lady Kim Ginger Clothes rack Lady Kim

Hot discussion 1 This is definitely what I have seen in history, the minimalist style 2 is painted on the large area of â€‹â€‹the MarrsGreen Mars Green latex paint, ... 3 The kitchen is not big enough, steamer, oven and want everything. What should I do? 4 summer balcony can not be ignored space 5 a concise and comfortable apartment 6 summer, sweat and skirts fly together, dry and hot weather. Against the high temperature, we need... 7 60m2 small space with a simple decoration + drapery with beautiful and comfortable! 8 What about imitation solid wood laminate flooring?