Choice of pneumatic hoses: When choosing pneumatic hoses, pay attention to the following four aspects:　　1. Pipe material: PU tube, nylon tube, etc.　　2. The inner and outer diameter dimensions of the tube: the outer diameter of the tube is used as the size of the tube, commonly known as the "pass dia

What are the advantages and disadvantages of pvc pipes?PVC plumbing advantage 1. With better anti-pull, anti-pressure strength: but its flexibility is not as good as other plastic tubes.2. Fluid resistance is small: PVC-U pipe wall is very smooth, the resistance to the fluid is very small, its rough