Key considerations for the use and maintenance of lined pipes

With the continuous development of industrial technology, lined pipes have been widely used in chemical, petroleum, electric power and other fields due to their excellent corrosion resistance, wear resistance and long life. However, the installation, use and maintenance of lined pipes need to strictly follow professional specifications, otherwise it may lead to performance degradation or even failure. This article will introduce the key considerations for lined pipes to help users better play their advantages.

1. Preparation before installation

The installation quality of lined pipes directly affects their service life. Before installation, it is necessary to ensure that the inner wall of the pipe is clean and free of debris to avoid sharp particles scratching the lining layer. At the same time, the integrity of the lining material needs to be checked to ensure that there are no bubbles, cracks or delamination. If welding connection is used, it should be ensured that the welding process meets the standards to avoid high temperature damage to the lining layer. In addition, excessive bending or stretching should be avoided during installation to avoid affecting the stability of the lining structure.

2. Precautions during use

Although lined pipes have excellent corrosion resistance, they still need to avoid contact with strong acids, strong alkalis or high-temperature media to avoid accelerating aging of the lining. When conveying highly abrasive materials, the flow rate should be controlled to avoid damage to the lining due to long-term friction. Regularly check the operation status of the pipeline, focusing on the joints, elbows and reducers, which are prone to stress concentration or increased wear. If leakage or lining damage is found, it should be immediately decommissioned and repaired to prevent the problem from expanding.

III. Maintenance and care recommendations

In order to extend the service life of lined pipes, it is recommended to establish a regular maintenance system. Endoscope inspection or pressure testing can be used to evaluate the integrity of the lining. For pipes that have been out of service for a long time, the medium should be drained and thoroughly dried to avoid corrosion of the lining by residues. In winter, antifreeze measures should be taken to prevent the lining material from cracking due to sudden temperature changes. In addition, operators should receive professional training to ensure the correct use and maintenance of the pipeline system.

IV. Conclusion

Lined pipes play an important role in many industries due to their unique performance advantages. However, only by strictly following the installation specifications, reasonable use and regular maintenance can their effectiveness be fully utilized. Users should formulate scientific pipeline management plans based on actual working conditions to ensure long-term stable operation of the system.