How to distinguish the advantages and disadvantages of PP-R water supply pipes ① The real product name of PP-R should be "polypropylene pipe for cold and hot water" or "PP-R pipe for cold and hot water", and the irregular names of superfine particle modified polypropylene pipe (PP-R) or PP-R cold water pipe, PP-R hot water pipe and PP-E pipe are all pseudo-PP-R pipes.
② The density of pseudo-PP-R is slightly higher than that of real PP-R. ..
③ True PP-R tubes are white matt or other matt colors, while pseudo PP-R tubes are bright or bright colors.
④ True PP-R tube is completely opaque, while pseudo PP-R tube is slightly translucent or translucent.
⑤ The real PP-R tube feels soft, while the fake PP-R tube feels smooth.
⑥ The landing sound of real PP-R pipe is dull, and the landing sound of fake PP-R pipe is crisp.
It should be pointed out that the service life of the pseudo PP-R tube is only 1? Five years, the service life of real PP-R pipe is more than 50 years.
How to tell that the bend of ppr water supply pipe is seldom faked? It is a low-end product in itself, which is very cheap. It's difficult to fake, and it's also a toxic product. Whoever makes a fake will not make a fake joint plastic.
How to distinguish true and false PPR water pipes? 70 ~ 80% of PPR tubes in the market are not real PPR tubes. In order to help users identify the authenticity of PPR pipes and fittings from the appearance and feel. Refer to the following identification methods: (1) Product name: The product name of PP ~ R should be "polypropylene pipe for cold and hot water" or "PP ~ R pipe for cold and hot water". Any polypropylene pipe (PP ~ R) or PP ~ R cold water pipe, PP ~ R hot water pipe, PP ~ E pipe modified with ultrafine particles. It's a pseudo PP ~ R tube. (2) The product inspection unit is a non-professional unit, and the contents of the inspection items are inconsistent with those listed in the PP ~ R pipe standard. The certificates issued by the product recommendation department or the product promotion department that they don't know the product standard of PP ~ R or don't have the product standard of PP ~ R are all false PP ~ R. (3) The density of pseudo PP ~ R is slightly greater than that of PP ~ R. (4) The PP ~ R tube is white matt or other colors matt, and the pseudo PP ~ R tube is shiny or brightly colored. (5) PP ~ R tube is completely opaque, while pseudo-PP ~ R tube is slight or translucent. (6) PP ~ R tube feels soft, while pseudo-PP ~ R tube feels smooth. 7) The landing sound of PP ~ R tube is dull, and the landing sound of pseudo PP ~ R tube is crisp. Real PP ~ R pipes shall conform to ISO/DIS15874.2 ~1999:> Pipe fittings shall conform to ISO/DIS15874.2 ~1999: > ; The efficiency of pseudo-PP ~ R pipes and fittings can not pass the above standards. It should be pointed out that the service life of pseudo-PP ~ R tube is only 1 ~ 5 years, while the service life of real PP ~ R tube is 50 years. PPR piping usually requires standard piping series and pressure rating. S5 =1.25mpa S4 =1.6mpa s 3.2 = 2.0mpa S2.5 = 2.5mpa S2 = 3.2mpa heating is generally above S3.2. Look at the color, the real tube is white and opaque, and some fake tubes are slightly transparent. Both ends of the Jinde tube are cut neatly without burr and the wall thickness is uniform. The false tube looks at the word mark in reverse. The real pipe mark can be erased; It is difficult to erase the word mark of fake pipe: ① The shorter the genuine product, the harder it is, and the longer it is, the softer it is; (2) the thickness of the tube wall can't distinguish the true from the false; ③ Seen from the cross section, the genuine product is shiny and the fake product is dark; (4) the trademark on the genuine pipe wall is clearly printed, while the counterfeit product is blurred; ⑤ JD tube has not been confirmed to have anti-counterfeiting mark. Add the 20-digit security code on the pipe first, and you can find the answer. (All pipes produced after June 24th, 2002 +65438 have this logo). Second, JD pipe production equipment is the most advanced production equipment in the world, and the production speed can reach 14 to 18 meters per minute, and other domestic equipment is 6 to 8 meters fastest. So we can calculate the number of meters according to the interval of printing marks on the pipe, so as to judge whether our pipe is produced or not. Thirdly, the appearance of JD's cold water pipe is sub-smooth, dull, and the end face of the pipe is round, without scratches, pinholes and other traces; The hot water pipe is high-gloss, shiny, with round end face and no scratches, pinholes and other traces. This depends on the usual observation and comparison with other manufacturers' pipes. ]
How to distinguish the advantages and disadvantages of solar water heater water pipes? It mainly depends on the material of the water pipe of the solar water heater. Different materials have different bearing indexes, and even the quality of the pipes with the same material is uneven.
How to distinguish between true and false water pipes? You can refer to the following identification methods: (1) Product name: The product name of PP-R should be "polypropylene pipe for cold and hot water" or "PP-R pipe for cold and hot water". Any polypropylene pipe (PP-R) or PP-R cold water pipe, PP-R hot water pipe, PP-E pipe, etc. modified by ultrafine particles. It's a fake PP-R tube. (2) The product inspection unit is a non-professional unit, and the contents of the inspection items are inconsistent with those listed in the PP-R pipe standard. Certificates issued by product recommendation departments or product promotion departments or departments that don't understand or have no PP-R standards are all fake PP-R. (3) The density of fake PP-R is slightly higher than that of PP-R. (4) The PP-R tube is matte white or other colors, and the fake PP-R tube is shiny or brightly colored. (5) The PP-R tube is completely opaque, while the pseudo PP-R tube is slightly or translucent. (6)PP-R tube feels soft, while pseudo-PP-R tube feels smooth. (7) The landing sound of PP-R tube is dull, and the landing sound of pseudo-PP-R tube is crisp. The real PP-R pipe shall conform to the ISO/DIS15874.2-1999 standard, and the pipe fittings shall conform to the ISO/DIS15874.2-1999 standard; The efficiency of pseudo-PP-R pipes and fittings can not pass the above standards. It should be pointed out that the service life of the pseudo PP-R tube is only 1-5 years, while the service life of the real PP-R tube is more than 50 years.
How to distinguish between true and false water pipes? Jinde pipeline products have always maintained the advantage of leading sales in the domestic market, which has a high popularity and is trusted by consumers. Because of this, Jinde products have also become the focus of attention of many counterfeiters. Fake and shoddy Jinde products have caused serious losses to consumers' economic interests and personal and property safety. In order to crack down on counterfeit and shoddy products, Jinde Plastic Pipe Group joined forces with the national law enforcement departments to crack down on counterfeit and shoddy products and achieved remarkable results. At the same time, in addition to cracking down on counterfeiting, Jinde enterprises are constantly updating anti-counterfeiting technologies and means to enable consumers to identify counterfeit goods more effectively. Recently, Jinde enterprises have invested a lot of money to design brand-new anti-counterfeiting labels for five types of products, such as threaded pipes, pure plastic pipes, copper products, geothermal pipes and water supply pipes, and are ready to put them on the market. This move will greatly raise the threshold of counterfeiting, and effectively curb and crack down on rampant counterfeiting in the market. Jinde anti-counterfeiting system adopts advanced anti-counterfeiting materials and patented double helix color coding technology to customize the exclusive inquiry system. The anti-counterfeiting effect is outstanding and it is extremely difficult to imitate. The brand-new Jinde label colors are: silver (threaded pipe fittings), blue (pure plastic pipe fittings), yellow (copper products), red (geothermal pipe fittings) and green (water supply pipe fittings), in which the colored part is laser scraping. Scraping off the label coating, consumers will get the 15-digit anti-counterfeiting code, as well as three inquiry methods, including SMS inquiry, 400 toll-free telephone inquiry and website inquiry. According to the 15-digit security code displayed on the label (the last five digits are colored numbers), consumers can determine whether the Jinde products they bought are genuine or not through three inquiry methods. The specific inquiry method is as follows: 1, SMS inquiry: edit 15-digit security code, and send SMS to 1066958359 199. After the transmission is successful, the system will automatically return the authenticity information with the color information of the last five digits of the security code. 2. Telephone inquiry: dial 400-69923 15 by mobile phone or fixed line, and enter the 15-digit security code according to the system prompt, and the system will return voice authenticity information. 3. Website query: Enter Jinde official website and enter 15-digit security code in turn for query verification. The system will return the pictures before and after scraping (only when the query is correct will the picture information be returned) and the authenticity information. Each anti-counterfeiting label has a unique anti-counterfeiting code, which can only be correctly queried once. If prompted to make multiple inquiries or have been inquired, consumers can contact Brand Management Center of Jinde Pipe Group at 800 890 7777. With the determination and attitude to crack down on counterfeit and shoddy products and adhering to the principle of being responsible to consumers, Jinde Pipe Group has specially developed brand-new anti-counterfeiting labels. It is believed that this technology will play a great role in the future market, so that consumers will no longer suffer from counterfeit goods and make outstanding contributions to the washing and purification pipeline market.
How to distinguish the advantages and disadvantages of floor heating pipes mainly includes the following aspects for reference only.
1, there will be words on the pipe to see if the writing is clear.
2. See if there is any difference in the same nominal thickness.
3. Feel whether the surface is fine and smooth by hand.
4. See if there are obvious bumps, bubbles and color differences on the surface.
How to distinguish the quality of LED guardrail tube is the most important part of guardrail tube. So be sure to choose a big brand or a regular factory. Many of those small packaging factories do not produce hardware, and the quality of the lamp beads produced is not guaranteed. Even if the price of such products is cheap, the final choice will be a loss. Therefore, good quality LED guardrail tube, lamp beads will not be bad. Some manufacturers will tamper with the lid in order to reduce the cost. High-quality guardrail sleeves will use imported GE materials, while inferior guardrail sleeves will be mixed with recycled materials. Such a cover has poor adaptability to temperature difference and is easy to break. Circuit board for the benefit, some manufacturers use single-sided fiberboard or flame retardant cardboard instead of all-glass fiber PCB board as the circuit board of LED lamps. The circuit board made of this cheap material will break due to problems such as moisture and oxidation, and the direct result after the break is the overall scrapping of guardrail tube. Therefore, when testing the advantages and disadvantages of LED guardrail tube, we must see whether the circuit board is a double-sided all-glass PCB board. Waterproof sealant guardrail tube Waterproof sealant must use silicone rubber, and any other rubber is unreliable. If you find that you are using hot melt adhesive, glass silicone or 704 silicone, you should worry about its quality. Although the price and cost of a high-quality LED guardrail tube are relatively high, its quality is guaranteed and it can be used for a long time. In this way, it is worthwhile because of its high cost and high price.
How to distinguish the advantages and disadvantages of PE water supply pipes: the appearance and wall thickness are uniform, and there should not be too many pits. Good raw materials will be more uniform and the wall thickness will be more uniform. Whether there are bubbles or water ripples on the inner wall. The material of the pipe incision is very flexible and smooth. If it is poor, add back the material. The appearance is poor and the incision is even worse.
Manufacturer: China famous brand, with good qualification and large scale, with annual production capacity exceeding 65,438+10,000 tons.
Welding: The most important thing for PE is welding. It is best to find one from the national PE welding technology welder training base, which can meet the above points. It shows that the products, construction and service of this manufacturer are first-class.
For example: Cai Zhong.