Benefiting from the continuous rise of oil price and the increasingly good economy of Iraq, our company recently exported a batch of 3PE anticorrosive steel pipes, which were directly used in the oil projects in Iraq.

I take this opportunity to introduce the 3PE coating often appeared problems and treatment methods:

In the 3PE steel pipe anticorrosive layer, if there are quality problems such as powder and steel pipe surface adhesion, powder and adhesive, adhesive and polyethylene, it will destroy the integrity of 3PE steel pipe anticorrosive layer. Such anticorrosive steel pipes shall be rejected. When the polyethylene thinning exceeds the standard minimum value, whether the thinning point meets the standard requirements. A patch or shortening sleeve should be allowed to correct a correctable defect. Otherwise, if possible, the treatment measures of reducing the use of the anticorrosive layer can be adopted. Bubble defects, polyethylene cracks and mechanical damage defects within the allowable limits of the standard can be corrected by patches or shortening sleeves. The correction bar is used to deal with small defects alone.

The edge warping of 3PE anti-corrosion steel pipe coating is a serious quality problem, which seriously affects the image of the product and leads to the invalidation of the anti-corrosion layer. Some of the warping edges can be detected at the exit pile, some are only visible at the pipeline site, and some are only visible at the pipeline construction site. Once a problem occurs, it is not only extremely difficult to correct, but also difficult to prevent, because some problems need to lie in wait for a long time before they appear. Therefore, it is necessary to prevent and solve the problem of edge warping in the production process.

It can be seen that the quality control of the anti-corrosion layer of 3PE steel pipe is quite messy. Some quality problems may escape the quality inspection of the outlet string and eventually lead to the installation site of the active pipe being put into operation. Therefore, from appearance treatment, painting to pipeline construction, it is very necessary to strictly check and control the quality of each position. As long as strict in accordance with the standard requirements to complete each process, ability to ensure the quality of each process and the final product quality of anti-corrosion pipe. In the meantime, the preheating process and painting post should be included in the quality inspection system, especially the quality inspection and control of painting operation should be the top priority.

3PE coating often appeared problems

The 3PE coating is widely used in various industries to protect pipelines from corrosion. However, this type of coating can experience some problems during its application and use.

One common problem with 3PE coating is poor adhesion. This occurs when the coating does not properly bond to the surface of the pipeline, leaving it vulnerable to corrosion. Poor adhesion can arise due to improper surface preparation or inadequate cleaning before applying the coating.

Another issue that may affect 3PE coatings is cracking and peeling. When this happens, water and other corrosive substances penetrate through gaps created by cracks on the surface of the pipeline, leading to accelerated corrosion rates. Cracking can result from excessive tension applied during installation or exposure to high temperatures.

In addition, improper curing conditions may also cause problems for 3PE coatings. If not cured under optimal temperature and humidity levels as recommended by manufacturers, there may be a reduction in the effectiveness of adhesion properties which leave pipelines prone to failure over time.

To prevent these issues with 3PE coatings, proper procedures must be followed during their application process including appropriate cleaning techniques prior to installation alongside performing frequent inspections throughout its operational period for early detection and subsequent treatment if any defects are detected..

3PE coating treatment methods

When it comes to treating problems with 3PE coating, the first step is to identify the issue. Once you've identified the problem, there are several treatment methods that can be employed depending on the severity of the issue.

One common problem with 3PE coating is blistering. To treat this issue, it's important to remove any loose or delaminated coating and clean the surface thoroughly before applying a new layer of epoxy primer. The affected area should then be sanded down and re-coated.

Another issue that may arise is cracking in the coating. This can be caused by excessive movement in pipes or inadequate adhesion between layers. To treat this problem, it's important to apply an additional layer of adhesive material between coatings or use thicker coatings altogether.

If there are any voids or pinholes present in the 3PE coating, they can lead to corrosion if left untreated. One effective treatment method for these issues is using sealant materials such as epoxy filler compounds which help fill up gaps and prevent further damage due to corrosion.

Proper identification of problems affecting your 3PE coated pipeline followed by appropriate remedial measures will ensure long-term durability of your pipeline infrastructure while safeguarding against costly maintenance expenses associated with premature failure rates.

Conclusion

To sum up, 3PE coating is an effective method for protecting pipelines from corrosion. However, it is not without its problems. The most common issues that arise include adhesion failure, blistering, and improper curing. These can all be addressed through careful preparation of the surface to be coated and by following appropriate application techniques.

If you are experiencing any problems with your 3PE coatings, don't despair - there are solutions available! By working closely with a knowledgeable coatings provider and taking steps to ensure proper surface preparation and application, you can avoid many of these issues altogether.

Ultimately, the key to successful 3PE coating lies in attention to detail and commitment to quality throughout every stage of the process. With dedication and care on your part as well as that of your coatings partner, you can enjoy all the benefits this powerful technology has to offer while minimizing risks related to common pitfalls along the way.

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