管道壁厚的增加直接带来的性能的提升，比如：工作压力增大，刚性增强，线性膨胀系数降低，耐温性能提高等等。
The increase of pipe wall thickness directly improves the performance， such as the increase of working pressure， the increase of rigidity， the decrease of linear expansion coefficient，ppr管件规格， the improvement of temperature resistance and so on.
做排水管时注意坡度：尤其是空调冷凝排水管，如果管子比较长，施工质量不好容易妨碍排水，导致返水至冷凝水盘漏水。解决办法：按照设计图纸标示的坡度，定好点，三明ppr管件，放好线，按照相应的间距，ppr管件，下料做好吊支架。
Pay attention to the slope when making the drainage pipe: especially the air conditioning condensate drainage pipe， if the pipe is relatively long and the quality is not good， it is easy to hinder the drainage， resulting in the leakage of return water to the condensate pan. Solution: according to the slope marked on the design drawings， set a good point， set a good line， according to the corresponding spacing， do a good job of lifting support.
In addition to the wall thickness， we can also distinguish from the color marking on the outer wall of PPR pipe. Color marking is also called coextrusion. The PPR hot water pipe is marked with red color marking， the PPR cold water pipe is marked with blue color marking， and there are also manufacturers who do not need any color marking for PPR cold water pipe.
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