What are the differences between galvanized and PPR pipes? “We found that lead pipes or leaded brass and bronze fittings were often the culprit when lead levels in drinking water exceeded the standard hot dipped galvanized steel coils. However, a new study showed that galvanized steel pipes were coated. The presence of lead in the layer may be an important long-term source of water lead.”
When the tap water pipe does not use water for more than 6 hours, first open the faucet for ten minutes, and let the water in the water pipe be discharged or not for drinking. This is because the pipe will not be used for a long time, and the water will dissolve too much lead. . In addition, when drinking tap water, it is necessary to add some nutrients such as calcium, zinc, vitamin E, C, B and protein, which are resistant to lead toxicity.
Households and individuals who regularly drink purified water should always supplement various nutrients, especially calcium and magnesium, which can prevent lead from blocking the absorption of these nutrients.
Aluminum-plastic composite pipe:
The secondary pollution of tap water in the water supply system and the harm to human health have been paid more and more attention by consumers. Many consumers almost completely decorate new houses or renovate the water supply pipes of old houses. Use aluminum-plastic composite pipes with better performance than galvanized pipes. However, there are many varieties of aluminum-plastic composite pipes currently on the market, and the quality and price vary greatly. How to choose aluminum-plastic composite pipe has become a headache for consumers.
1. the appearance of the image
According to relevant persons, the aluminum composite pipe of good quality generally has a smooth outer wall, and the marks on the pipe wall are clearly marked with trademarks, specifications, applicable temperatures and meters. The manufacturer also prints the production number on the pipe wall to monitor the quality of the product at any time; The products are well-packaged, and the various logos on the packaging are equally clear. The manufacturer’s name, address, telephone number, etc. are printed in prominent positions. The counterfeit products generally have rough walls, unclear or incomplete labels, simple packaging, and unknown site or telephone.
2. aluminum layer can not be ignored
A good aluminum-plastic composite pipe has welding at the lap joint of the aluminum layer, and the aluminum layer and the plastic layer are tightly combined without delamination, and the aluminum layer lap joint of the counterfeit product is not welded, and some aluminum layers and plastic layers are often Layered, not tight.
3. Price difference
At present, the price of aluminum-plastic composite pipes sold on the market varies greatly. Some are 1-2 yuan per meter, and some are 7-10 yuan per meter. According to the production cost of aluminum-plastic composite pipe, the price is too low. The quality of raw materials cannot be guaranteed at all. Therefore, consumers can’t afford to be cheap when they buy. In fact, as the production capacity of some large enterprises continues to increase, the production costs continue to decrease, and the prices of some brand-name products are also lowered. Now, the aluminum-plastic composite pipes required for the decoration of a house have a total value of only tens of brands and ordinary products. Yuan, so buying a product with a certain reputation is a wise choice.
The PPR pipe is officially called the random copolymer polypropylene pipe, which is the most widely used water supply pipe in the current home improvement project.
The interface of the PPR pipe adopts the hot melt technology, and the pipes are completely fused together, so once the installation pressure test is passed, the water will never leak again, and the reliability is extremely high. However, this does not mean that the PPR water pipe is a water pipe with no defects. It has high temperature resistance and pressure resistance. The long-term working temperature cannot exceed 70 °C. Each length is limited and cannot be bent. If the pipe is laid for a long distance or at a corner Many, a large number of joints are used in construction; pipes are cheap but the price of accessories is relatively high. In terms of comprehensive performance, PPR pipe is currently the most cost-effective pipe, so it has become the material of choice for the renovation of home water pipes.
The PPR tubes sold in the market mainly have three colors, white green and gray. Why is this difference? The dealer’s answer is caused by the difference in the raw material PPR particles and the filler. Among them, the white green is a fine PPR tube with good material, and the gray is a common tube with a slightly poor material.
Generally, in the hydropower transformation, the original water pipes will be replaced. The home improvement company and the merchants all choose hot water pipes when installing the PPR pipes, even hot water pipes are used in places where cold water flows. This is because the technical parameters of the hot water pipe are higher than the cold water pipe, and the price is not much different, so the waterway transformation uses hot water pipes.