Aluminum-plastic composite pipe: The loss of aluminum-plastic composite pipe is small, the coil is easy to transport, can be arbitrarily cut, easy to install, and convenient to construct. However, the accessories are pure copper, which is expensive. The inner diameter of the copper parts is smaller than the inner diameter of the aluminum-plastic composite pipe, the caliber flow is small, and the installation is not good, and it is easy to leak due to thermal expansion and contraction. Pipelines are easily damaged by other professional construction processes, waste accessories and high cost when repairing. The aluminum-plastic pipe is made of high-density polyethylene sandwiched with aluminum. The melting point of polyethylene is 140 ° C, so it has good long-term high temperature resistance. high degree.

PP-R pipe: PP-R pipe is regarded as a green and reliable pipe by the building water supply and drainage industry. The pipe fittings of the PP-R pipe are also made of PP-R material. Compared with the aluminum-plastic composite pipe, the cost is lower, and the pipe fittings are installed on the outside of the pipe, so that the flow rate is not reduced. However, the PVC transparent pipe production line should not be suspended for a long distance, and a fixed bracket should be set every 50cm or so, otherwise it is easy to sag and bend. In addition to the pure PP-R pipe, there is also a PP-R aluminum-plastic pipe. The pipe fittings of this pipe are the same as the PP-R pipe, but it is equivalent to the performance of the aluminum-plastic pipe, and the cost is lower than that of the aluminum-plastic composite pipe. Good aging and strength properties, long-distance suspension without sagging and bending. PVC transparent pipe production line, PE/PRR pipe production line, PVC one-out four high-speed production line It is understood that due to the molecular characteristics of polypropylene itself, PP-R pipes, whether imported or domestic, have poor high temperature resistance performance and large linear expansion coefficient. shortcoming. Therefore, the Ministry of Construction [2001] No. 54 document expressly stipulates that the long-term working temperature of PP-R pipes cannot exceed 70 °C; and its hot-melt connection process is more complicated, and it is easy to generate stacking defect areas during push-connection, resulting in stress concentration and affecting the pipeline. long term performance. Therefore, when purchasing, do not easily entrust a plumber or some unqualified decoration companies, and pay attention to the actual origin, trademark and after-sales service guarantee of the product when purchasing.

PE pipe: PE pipe has a single structure, and its comprehensive performance is not as good as that of aluminum-plastic pipe. It is mainly used for floor heating water pipes. Floor heating facilities are generally done by builders, and PE pipes are generally not used in home decoration.

PVC-U pipe: The connection method of PVC-U pipe is adhesive, which is easy to fall off and open when heated. It is only suitable for underground pipelines or buried pipelines. If it is used for large-diameter high-pressure exposed pipes, special brackets must be designed, especially It is the corner, and the impact of the water flow will cause great damage to the corner. It is not recommended to use PVC-U pipes for water pipes in home improvement, but the threading pipes are generally flame-retardant PVC plastic flat pipes (PVC threading pipes).

Copper pipe: The sanitary performance of copper pipe is superior, but the cost is high. The connection methods of copper pipes include welding (pipe fittings are divided into two types with tin and no tin), and pipe fittings are clamped (pipe fittings are divided into two types, one is clamp type, the other is inverted teeth bite and rubber ring sealing). The pipeline is easily damaged by subsequent construction or secondary decoration. "I love my home" tip: Home decoration people often ignore the choice of water supply pipes and pipe diameters. After moving in, they find that there are many problems, such as pipe leaks that damage the decoration, insufficient water pressure, water heaters that cannot be started, etc. Therefore, considering the life of the pipe, choose a copper water pipe or a better quality aluminum-plastic composite pipe, the pipe diameter should be 20 mm or more, and the branch pipe connecting a faucet should not be less than 15 mm in diameter, otherwise insufficient water pressure will occur. The problem of loud water noise. If you choose aluminum-plastic composite pipe clip fittings, you should pay attention to select the pipe diameter according to its actual inner diameter and increase 2-3 mm. For example, the diameter of the branch pipe should be 2025, and the main pipe should be 2532, so as to ensure that more than two faucets can be used at the same time. The amount of water when using water.

Water pipes: To meet the needs of health, the sanitary indicators of water pipes must meet national standards before they can be used. However, the cleanliness of the water is not entirely determined by the pollution of the water quality by the pipes, but also depends on whether the pipes used can resist the penetration of oxygen in the outside air into the pipe wall. Long-term oxygen infiltration is easy to breed bacteria, scale, and moss in the pipeline, thereby polluting the water quality.