DN225 steel pipe is a common steel pipe specification with a diameter of 225 mm and a wall thickness of 6 mm. It is commonly used in industrial, municipal, and construction applications, such as water supply and drainage pipes, oil and gas pipelines, and bridge support structures.

First, Characteristics of DN225 Steel Pipe
1. Material: DN225 steel pipe is primarily made of carbon structural steel or low-alloy structural steel, which offers excellent weldability and machinability.
2. Size: DN225 steel pipe has a diameter of 225 mm and a wall thickness of 6 mm. Lengths are typically 6, 9, or 12 meters. Due to its larger size, it is also heavier.
3. Compressive Strength: Due to its material and size, DN225 steel pipe has strong compressive strength and can withstand high-pressure loads.
4. Corrosion Resistance: DN225 steel pipe is often treated with an anti-corrosion treatment to enhance its corrosion resistance, enabling its use in harsh environments.

Second, Application Areas of DN225 Steel Pipe
1. Water Supply and Drainage Pipes: DN225 steel pipe is commonly used in water supply and drainage pipes in municipal engineering projects. It can withstand high water pressure and flow, and has a long service life.
2. Oil and Gas Pipelines: DN225 steel pipe can also be used in oil and gas pipelines, and its pressure resistance and corrosion resistance meet the requirements of oil and gas transportation.
3. Bridge Support Structures: DN225 steel pipe can also be used in bridge support structures, such as support columns and beams. Its strength and stability can withstand the weight and load of bridges.
4. Building Structures: DN225 steel pipe can also be used in building structures, such as steel frames and support columns. Its size and material meet the requirements of building structures, and it has good plasticity and workability.

In short, as a common steel pipe specification, DN225 steel pipe has strong pressure resistance and corrosion resistance, and is widely used in industry, municipal engineering, and construction.