Is the water pipe size inner diameter or outer diameter?

When arranging water pipes at home, you need to know what type to choose. Water pipes also have different diameters. When we determine the size of water pipes, do we calculate them according to the inner diameter or the outer diameter?

A, water pipe size is the inner diameter or outer diameter calculation.

1, water pipes are also available in different sizes. Generally, the inner diameter is measured. For example, there is a two-inch pipe with an inner diameter of 50 mm.

2. If four branches are selected, with a nominal diameter of 15mm and an outer diameter of 2 1.25mm, six branches with a nominal diameter of 20 mm and an outer diameter of 26.75 mm are calculated.

Second, the water pipe measurement unit

1. Generally speaking, when measuring a water pipe, inches are used as its length unit, and 1 inch is about 2.53 cm.

2. There are 4 tubes, 6 tubes, 1 inch tube, 1 inch 2 tube, 1 inch half tube, etc. Different pipes have different sizes.

1 inch can be divided into 8 equal parts, including 1/8 inch, 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch, 3/4 inch, 7/8 inch and so on.

3. What are the types of water pipes?

1, the most common type is plastic pipe, such as PVC pipe. Many people find that PVC will produce some additives in the process of use, which is harmful to human body, so generally speaking, PVC pipes will not be used as drainage pipes, but can be used to lay sewage pipes or electric conduits.

2. PE pipe can be used for drinking water pipes, because its material is relatively safe, but its price is relatively high.

3. There are ppr pipes, which are also very good materials and have many advantages, such as health and environmental protection, good heat resistance and pressure resistance, and can be used for household pipes.

Bian Xiao concluded: When we choose a water pipe, we can distinguish it according to its material on the one hand and its diameter on the other. When measuring, you can measure its inner diameter and outer diameter, and there is a difference between them.