Steel-plastic composite pipe and plastic-lined steel pipe have always been foolishly confused between the two kinds of pipes, do not know their respective properties, and do not know where they are used respectively. In fact, the difference between steel-plastic composite pipe and plastic-lined steel pipe is quite Big, you can’t see that the main reason is that you don’t know enough about these two kinds of pipes. Today, this article will introduce these two kinds of pipes respectively. After you have a general understanding of them, we will introduce the steel-plastic composite pipes and The difference between plastic-lined steel pipes.
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1. Characteristics of steel-plastic composite pipe
The basic material of steel-plastic composite pipe is seamless steel pipe and welded steel pipe, with certain strength and rigidity, which is incomparable with plastic pipe and aluminum-plastic pipe. In addition, its inner wall is very smooth, so no scaling will occur. Although it is steel, the overall weight is light, the key is impact resistance, and it will not shrink and expand due to changes in the environment, so the safety will be higher.
Second, the characteristics of plastic-lined steel pipe
The plastic-lined steel pipe is based on galvanized seamless steel pipe and welded steel pipe. It is an upgraded version of galvanized pipe. It can be used in a wide range and can basically meet the general water supply requirements of buildings. It has a good anti-corrosion effect and a long service life. It is very long, but the cost is high, and the connection parts of the pipe fittings are easy to cause water pollution.
3. The difference between steel-plastic composite pipe and plastic-lined steel pipe
As an improved version of drinking water pipes, the two are similar in mechanical strength, pressure-bearing performance and service life, and their advantages are also very similar, but after all, the two are two different pipes, so please distinguish them carefully. There are still some.
The steel-plastic composite pipe is a composite pipe with a five-layer structure. The inner layer is non-toxic and pollution-free, but the main material of the inner layer of the plastic-lined steel pipe is epoxy resin powder or PE powder, which contains harmful components. Long-term water supply will directly harm human health.
The steel-plastic composite pipe is smooth and not easy to scale, and can be used not only in cold water, but also in hot water. However, the inner wall of the plastic-lined steel pipe is uneven and not smooth, which makes the scale volume accumulate, which breeds bacteria. When used in a hot water system, it will be thermally expanded. The outer wall of the steel pipe has no anti-corrosion layer, which is more prone to rust. thereby affecting the lifespan.
The last key point is that the price of the steel-plastic composite pipe will be slightly more affordable, because the workmanship of the plastic-lined steel pipe is complicated and exquisite, so the overall price will be higher than that of the steel-plastic composite pipe.
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The difference between the steel-plastic composite pipe and the plastic-lined steel pipe is compared in a very small way. In fact, both are high-quality drinking water pipes with excellent overall performance. As for which one to choose as the water supply for your home Pipes still need to think about it by themselves. Maybe the shortcomings in the eyes of others are not so bad in their eyes, or they do not affect their life at all, so everyone may wish to make up their own minds.