Maintenance methods of carbon steel welded pipe

Welded steel pipes, also known as welded pipes, are formed by welding steel plates or strips after they are curled and shaped. The service life of any item, including welded pipes, is closely linked to proper maintenance. To extend the lifespan of carbon steel welded pipes, it is crucial to follow regular maintenance procedures. Here is a brief guide on maintaining carbon steel welded pipes.

Cleaning and Grinding:

If the welded pipe is damaged, it should be polished to remove scratches and splashes caused by contact with carbon steel parts.

Carefully clean and polish any damage from cutting slag.

Mechanical Polishing:

Use suitable polishing tools to achieve a uniform finish.

Avoid excessive polishing and prevent re-scratching the surface.

Degreasing and Dust Removal:

Before pickling and passivation, clean the welded pipe of oil, scale, dust, and other debris as per the welded pipe process.

Water Sandblasting:

Select appropriate micro glass beads and process parameters based on specific processing requirements.

Avoid over-spraying to maintain the integrity of the surface.

Pickling and Passivation:

Follow strict process requirements for pickling and passivating the welded pipe to ensure proper surface treatment.

Cleaning and Drying:

After pickling and passivation, perform neutralization, rinsing, and drying according to the process to completely remove residual acid.

Protection:

Once surface treatment is complete, protect the welded pipe to prevent secondary contamination from handling, oil, dust, and other debris.

Regular maintenance of carbon steel welded pipes not only significantly extends their service life but also enhances their efficiency and safety in daily use. Therefore, it is essential to adhere to these maintenance methods and incorporate them into routine upkeep of the welded pipes.