The role and classification of casing
Casing is a kind of pipeline protection material, mainly used to protect wires, cables, water pipes, gas pipes and other equipment. According to different materials, casing can be divided into different types such as PVC casing, nylon casing, metal casing, etc. Different casing materials are suitable for different environments and places.
Casing selection specifications
1. Pipe size
When selecting casing, the size of the pipeline should be considered first. The inner diameter of the casing must be larger than the outer diameter of the pipeline. At the same time, the wall thickness and bending radius of the casing should also be considered to ensure the protective effect of the casing.
2. Environmental factors
When selecting casing, the environmental factors such as temperature, humidity, and corrosiveness of the pipeline should also be considered. For high temperature environment, casing materials that can withstand high temperature should be selected; for humid environment, casing materials that are resistant to moisture should be selected; for corrosive environment, corresponding anti-corrosion casing materials should be selected.
3. Thermal expansion coefficient
When selecting casing, the material and thermal expansion coefficient of the pipeline should also be considered. If the thermal expansion coefficient of the pipe material is different from that of the sleeve, it will cause stress in the sleeve when the temperature changes, affecting the protective effect of the sleeve. Therefore, when selecting the sleeve, the thermal expansion coefficient of the pipe material should also be considered.
4. Installation method
Different sleeves have different installation methods, such as fixed sleeves, telescopic sleeves, hoses, etc. Choose the appropriate sleeve installation method according to the specific application scenario.
5. Other factors
When selecting the sleeve, pay special attention to other factors such as the fire resistance, wear resistance, and waterproof performance of the sleeve.
Casing selection method
1. Understand the specific parameters of the pipeline, such as pipeline material, pipeline size, pipeline length, etc.;
2. Understand the environment and use conditions of the pipeline;
3. Understand the material of the sleeve, such as PVC material, nylon material, etc.;
4. Select the appropriate sleeve material and model according to the specific situation;
5. Install and adjust according to the size, installation method and other requirements of the sleeve.
Conclusion
The sleeve is a very important pipeline protection material. The correct selection can improve the safety and life of the pipeline. When selecting the casing, it is necessary to comprehensively consider the pipeline size, environmental factors, thermal expansion coefficient, installation method and other factors, select the appropriate casing material and model, and then install and adjust it according to the requirements to ensure the long-term operation and protection of the pipeline.

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