What are the disadvantages of the PPR steady state composite tube?
His drawback is that the expansion coefficient of plastic and metal and bending coefficient is different, the expansion coefficient of metal is less than the quantity, so when the pipeline heating, plastic can only expand to the interior, water flow will have some impact. However, normal use is generally not a problem.
First of all, you have to understand what a steady pipe is. The so-called steady pipe is a multi-layer and metal composite pipe. In fact, it is a PPR multilayer composite pipe.
In fact, the metal just to cater to consumers, think it adds metal pipe quality is certainly good. In fact, it doesn't have to be that big. I'm not saying that the pipe isn't good. I mean, this kind of pipe is very rare abroad. It's of Chinese characteristics. You know it.
