The outer diameter of the 6-point water pipe is generally 25mm, and the inner diameter=outer diameter-2×wall thickness=20mm.
In addition to 6 pipes, the commonly used indoor water pipes also have 4 pipes. When choosing a water pipe indoors, it is mainly based on the different areas and water consumption conditions, whether to use a 4-point water pipe or a 6-point water pipe. In places where water consumption is relatively large, you can choose a 6-point water pipe, such as the main water pipe, and use a 4-point water pipe, such as a branch pipe, in places with less water consumption, so that it will not be wasted.