At 1:00-5:30 pm on March 5th, 2008, the “Expert†of Meiergu Pipes was invited to serve as a service area for the Shanghai Group-Buying Forum, which provided a forum for users of the group to answer questions about water management. Many netizens had done enough “homework†before the special interview, and asked various experts for water pipes. Even the staff members were reluctant to miss this opportunity and asked the “experts†for professional knowledge. Regarding the general knowledge and construction issues raised by netizens, Meigu’s “experts†gave patient answers. Plumbing knowledge problems Water pipe knowledge articles The waves are still there: What is the difference between PPR pipe, PPR copper pipe, and PPR aluminum pipe? Which kind of family is used? Meiergu: PP-R pipe is also called three-type polypropylene pipe. The raw material molecules are only carbon and hydrogen elements, and no harmful toxic elements exist. It is hygienic and reliable. It is not only used in hot and cold water pipes, but also used in pure drinking water systems. The inner layer of the PPR copper pipe is covered with PPR on the copper surface. The PPR coated aluminum tube is covered with a layer of PPR. Luobotou: What is the general life of the water pipe? Meiergu: The normal water temperature is about 60 degrees, and the service life can reach more than 50 years. Anonymous: What is the mixing valve and what is the role of the mixing valve? Meiergu: The water mixing valve can automatically balance the pressure and is usually used for heating. It is usually not used for water pipes. Anonymous: What is a tube card? Meiergu: PPR tube can be fixed on the wall, a standard fixed 1 meter away from a tube card, looks beautiful, flat and straight. occasionally: How to distinguish the quality of the pipe? Meiergu: I. Product Name: The product name of True PP-R shall be "PP pipe for hot and cold water or "PP-R pipe for hot and cold water", and crowned with PP-R Or PP-R cold water pipe, PP-R hot water pipe, PP-E pipe and other informal names are pseudo-PP-R pipe. Second, the density of pseudo PP-R is slightly larger than that of true PP-R. Third, the true PP-R tube is matt white or other color matte, pseudo-PP-R tube shiny bright or colorful. Fourth, true PP-R tube completely opaque, pseudo-PP-R tube light transmission or semi-transparent. Five, true PP-R tube feel soft, false PP-R tube feel smooth. Sixth, true PP-R pipe landing sound more boring, fake PP-R pipe landing sound more crisp. It should be pointed out that the service life of the pseudo-PP-R pipe is only 5 years, and the service life of the real PP-R pipe is more than 50 years, and the service life of the general building is 50 years. Construction articles The waves are still there: Are the hot and cold water pipes grooved separately, or are the two water pipes placed in one slot? Meiergu: Hot and cold water pipes are inside a slot, the slot width is about 7 centimeters, and the slot depth is about 3 centimeters. The hot and cold water pipes are to be divided, with hot water on the left and cold water on the right. The distance between the grooves is 15 cm, the groove width is 5 cm, and the groove depth is 4 cm. The waves are still there: What accessories do you normally need under a normal situation? Meiergu: Generally need 90 degree elbow, 45 degree elbow, inner wire elbow, outer wire elbow, outer wire direct, inner wire direct, curved tube, tube card and pipe plug. One kitchen, one bathroom, and one north balcony normally require 1-2 ball valves, 7 triangular valves, and 30 meters of water pipes. The ratio of accessories is 1:1. One kitchen, two bathrooms, two balconies, normal conditions, 2 ball valves, 10 triangular valves, practical water management. Grape: How do you count the demand for water pipes? Meiergu: Generally, a small room type of 30-40 meters is enough, and a large room-type balcony requires about 60 meters of pipe. Small U: How can I prevent water explosion? Meiergu: The PPR pipe is different from the iron pipe, and the workers should take care when installing it. If there are any small cracks that cannot be found at the time when the parts are thrown at random, the above situation will occur when the parts are completely closed. White and fat: Water pipes are generally installed at what stage of the renovation? Meiergu: Hydropower is at the very beginning of the renovation. The decoration team will open the slots and holes so that the water pipes can be installed. White and fat: How to test the water pressure? Meiergu: The pipe on the pressure pump receives the maximum amount of water on the other pipe. When the pressure on the pressure vessel is expressed to 8 kg, the time is 20 minutes. White and fat: A lot of water pipes are hidden in the wall, so if there is a problem with the water pipe, how can it be repaired? Meiergu: The installers of regular manufacturers have all been trained. After completing the water pipes, they have to draw water maps or record them to make them discs so that they can be found out in time if there are problems. White and fat: When is the plumbing measurement? Meiergu: Workers generally use a 60-meter tube with a kitchen and a bath. It is not necessary to measure how much is left to know how many meters of pipe are used. Accessories are to be counted. Always win: Is the same pipe used for the inlet pipe and the outlet pipe? If the area is not large, can you consider using hot water pipes for water? Meiergu: The hot water pipe can replace the cold water pipe, but the cold water pipe can not replace the hot water pipe, because 2.5*2.8 behind the cold water pipe wall and 2.5*4.2 behind the hot water pipe wall, and the pressure is different. There are informal manufacturers will take 2.5 * 3.5 hot water pipe instead of 2.5 * 4.2. Industry expert Lisa introduction Since he took over the management of the plumbing industry for many years, he has driven a number of hot-blooded plumbers to the world since he took over the Meiergu management industry. It has experienced many ups and downs, but with its own strong expertise and reluctance to lose. The spirit gradually led Meierguchi to grow up. By 2007, its turnover had already accounted for one-fourth of Shanghai's home improvement market pipeline, and enjoyed a high reputation in China. It had won the "Top Ten Best-selling Brand" and "Consumption" of the Shanghai market decoration materials market. 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