Flanges are key connection components in ISO tank containers, mainly used for **sealing connection of pipes, valves, manholes and other equipment**. Their core functions include:
1. **Reliable sealing**: Through bolt tightening and gasket matching, ensure **leakage** at the connection between the tank body and external pipes or accessories, especially suitable for transporting high-pressure or corrosive media such as dangerous chemicals and liquefied gas.
2. **Modular connection**: Standardized design (such as DN standard) enables quick disassembly and assembly, which is convenient for maintenance, cleaning or replacement of parts.
3. **Structural support**: Strengthen the opening of the tank body, disperse stress, and prevent deformation due to pressure or vibration.
4. **Multi-functional adaptation**: Sensors, safety valves and other accessories can be integrated to expand the functions of the tank container.
**Application scenarios**: loading and unloading ports, safety valve interfaces, manhole covers, etc. The material of the flange (such as stainless steel, fluorine-lined) needs to be selected according to the characteristics of the medium to ensure corrosion resistance and long life.