What does DN800 mean for steel pipes

When you buy steel pipes, you often see the logo "DN800". What does this mean? This is describing the size of the steel pipe. Let me explain it to you in detail.

1. What does DN800 mean?
"DN" stands for the abbreviation of "Diamètre Nominal", which is French for "nominal diameter" and is used to indicate the nominal size of pipes or fittings. The number 800 means that the nominal diameter of the pipe is 800 mm.

2. The importance of steel pipe specifications
As one of the commonly used materials in engineering construction, the size of steel pipe specifications is directly related to the safety and applicability of engineering design and use. Therefore, understanding the significance of steel pipe specifications is very important for engineering construction and use.

3. Classification of steel pipe specifications
There are many ways to classify steel pipe specifications. Common ones are classified according to nominal diameter, wall thickness, material, etc. Among them, nominal diameter is a common method to describe the size of steel pipes, and it is also one of the most intuitive methods.

4. Application of steel pipe specifications
Steel pipes of different specifications have their specific applications in engineering. For example, steel pipes with smaller diameters are usually used in water supply, natural gas, heating, and other systems; while steel pipes with larger diameters are often used to transport large flow media such as liquids and gases.

5. Recommendations for purchasing steel pipe specifications
When purchasing steel pipes, it is necessary to select appropriate specifications according to actual engineering needs, and also pay attention to factors such as the material, production standards, and surface treatment of the steel pipes to ensure that the selected steel pipes meet engineering requirements.