What are the common diameters of PPR pipes?

DN15: The inner diameter is about 15mm, and the outer diameter is usually around 20mm. It is commonly known as 4'' pipe and is often used for connecting faucets, toilet water inlets, and other low-flow fixtures in households.

DN20: With an inner diameter of approximately 20mm and an outer diameter of about 25mm, it is called 6 '' pipe. It is widely used in general household water supply systems, such as for supplying water to showers, washing machines, and some kitchen appliances.

DN25: The inner diameter is around 25mm, and the outer diameter is approximately 32mm, which is equivalent to 1-inch pipe. It is suitable for use as the main pipe in a household water supply system or for connecting to water heaters and other equipment with relatively high water demand.

DN32: Having an inner diameter of about 32mm and an outer diameter of around 40mm, it is known as 1-inch 2 pipe. It is often used in larger residential or small commercial water supply systems, such as for supplying water to multiple bathrooms or for some industrial water supply with relatively low flow requirements.

DN40: The inner diameter is approximately 40mm, and the outer diameter is about 50mm, which is 1-inch 5 pipe. It is used in some industrial and commercial water supply and drainage systems, as well as in large-scale building water supply systems where higher water flow is required.

DN50: With an inner diameter of around 50mm and an outer diameter of approximately 63mm, it is equivalent to 2-inch pipe. It is commonly used in industrial water supply, large commercial building water supply, and some central heating systems to meet the needs of large water flow and high pressure.

DN65: The inner diameter is about 65mm, and the outer diameter is around 75mm, which is 2-inch 5 pipe. It is mainly used in industrial and large-scale commercial water supply and drainage systems, especially for transporting larger amounts of water or other fluids.

DN80: Having an inner diameter of approximately 80mm and an outer diameter of about 90mm, it is equivalent to 3-inch pipe. It is often used in industrial water supply, air conditioning chilled water systems, and some large-scale building water supply and drainage systems with high flow requirements.

DN100: The inner diameter is around 100mm, and the outer diameter is about 110mm, which is 4-inch pipe. It is widely used in industrial water supply, large-scale central heating systems, and municipal water supply and drainage projects to handle large water volumes and high pressures.