At present, the pipelines supplied by the market are mainly galvanized steel pipes, plastic-lined galvanized steel pipes, PVC plastic pipes, PP-R plastic pipes, aluminum-plastic composite pipes, copper pipes, plastic-coated copper pipes, stainless steel-lined plastic pipes, and stainless steel pipes. External plastic pipe, stainless steel pipe and other components. However, ordinary people know how to distinguish each category, so the following describes in detail the characteristics of various pipelines. Let us analyze the main characteristics of these pipes one by one, so that the pipes can be selected correctly and reasonably. Galvanized Steel Pipe: It is cheap and has high mechanical strength, but it is easy to rust. The inner wall of the pipe is prone to fouling and it will breed bacteria. The service life is short. In the field of water supply, it is to eliminate banned products. Lined with plastic galvanized steel pipe is a product of poor consideration. It causes the pipeline to become bulky and also increases the manufacturing cost, and fails to eliminate the defect that the galvanized steel pipe thread is easily corroded and has a short service life. Therefore, it is a product that is not suitable for promotion. PVC and PP-R pipes: They belong to the same category of plastic pipes. They are characterized by easy manufacturing, light weight and low price. However, it has low mechanical strength, poor resistance to damage, aging, and micro-toxicity (polypropylene is not toxic, but plasticizers and masterbatches have certain toxicity). If the production plant is adulterated to reduce the quality, it is difficult to distinguish, so it is only suitable for low-demand, short-term use of the occasion. Aluminum-plastic composite pipe: It has the advantages of easy bending, less number of pipe joints for long-distance transportation, and convenient pipe transportation. However, there is a serious bottleneck in the connection between the pipe and the joint, causing a large flow loss. In addition, if the connection between the pipe and the joint is more than two times, after the repeated installation, there will be a phenomenon that the pressure resistance and the pull-out resistance are significantly reduced. In addition, since the joints are made of brass, the joints are prone to greenish green, and the surface may contain harmful metal substances such as lead. Therefore, aluminum-plastic composite pipes are not generally used for direct drinking water transportation. Brass tube: It has the effect of inhibiting the growth of bacteria for a certain period. Mechanical strength and resistance to damage are also good, but they are not acid resistant, and are easily oxidized to produce beryl green in a humid environment. Tetrachloro green is also a toxic substance. In addition, due to its large thermal conductivity, such as for the delivery of hot water must be a good insulation treatment. Plastic-reinforced copper tubes: Although the defects of excessive heat dissipation of the copper tubes are eliminated, the production costs increase. And produce the outer plastic layer is easy to aging and shorten the service life of the defects. Stainless steel lined with plastic, outer plastic pipe: is a product that is not considered well. Because the difference in service life between stainless steel and plastic is too large, it should not be promoted. Thick-walled stainless steel pipe: Because of its advantages such as corrosion resistance, no pollution, excellent mechanical properties, good resistance to damage, low thermal conductivity, durability, luxury appearance, etc., it is the most ideal pipe for use. Because of this, all stainless steel piping systems were adopted early in the pharmaceutical, chemical, and beverage packaging industries. In Japan and Germany, water pipe networks in some areas have all adopted stainless steel piping systems. However, the traditional thick-walled stainless steel pipeline system has been used in the municipal water supply and construction water supply fields due to its high consumption of stainless steel materials and its high price. Thin-walled stainless steel pipe: This is a new generation of water pipes that China is leading in the world. The system abandons the traditional thread cutter connection method and uses a homogenous plug joint to achieve a sealed connection of the pipe, so the stainless steel pipe can be thinned. The wall of the pipe greatly reduces the cost of laying pipes (similar to copper pipes). According to actual measurement, the working pressure of the thin-walled stainless steel pipeline system can reach 2.5Mpa or more, its thermal conductivity is low, it is 1/25 of the copper tube, 1/4 of the iron tube, and the thermal insulation effect is the best one among all the metal pipelines. , And can be long-term use in the temperature range of -40 °C ~ 120 °C. Due to its excellent performance in all aspects, the Ministry of Construction has listed below as a preferred water pipe. Building Materials Stainless Steel Gate Valve,Sluice Gate Valve,Flanged Gate Valve,Stainless Steel Gate Valve Haogong Valve Co Ltd , https://www.haogongvalve.com
Sanqing stainless steel pipe