How to Repair Surface Damage and Address Flattened Bent Pipes
Over time, bent pipes may experience surface damage due to construction environments and inevitable contact during the construction process. When the pipe's surface is damaged, steps should be taken to rectify the situation. Here's how to proceed:
1. Heat-Tinting: When welding geological pipes, if the heating temperature doesn't meet the specified requirements, the surface of the bent pipe may exhibit a layer of chromium oxide known as heat-tinting. In this case, the non-chromium metal layer on the pipe should be removed.
2. Adhesive Residue: After removing tape and masking paper, a layer of adhesive residue may remain on the surface of the pipe. This can be cleaned using fine abrasives. If the adhesive has hardened, it can be removed using an inorganic flux.
3. Welding Flux: During the welding of bent pipes, thick welding flux particles are often left on the pipe's surface. These flux particles can be removed mechanically.
4. Rust Stains: If rust stains are present on the surface of the pipes, they can be removed using sponges soaked in white vinegar and black mold, among other methods. Stubborn stains can be covered with a vinegar-soaked cloth for 30 minutes, making them easier to remove.
By applying the methods mentioned above, surface damage to the bent pipes can be addressed, restoring the pipeline's surface to its original condition. Maintaining the pipe's surface is essential to ensure it remains as smooth as a new pipe. Effective protection of the pipe is vital.
During the construction of bent pipes, the remaining pipes are often stacked together. However, it is crucial to avoid having other heavy objects press down on the pipes, as even high-quality bent pipes can become damaged. If a bent pipe becomes flattened, how should it be handled?
1. Proper Storage and Transport:
- Bent pipes are initially uniform and regular in shape. To save space, larger diameter pipes are often placed at the bottom and smaller diameter pipes are stacked in layers. When the height does not exceed 2.5 meters, the pipes are not damaged or flattened. However, if smaller diameter pipes are stacked layer by layer inside a larger diameter pipe, the bottom pipe will bear a significant load, causing deformation. It's important to note that this is not a quality issue with the bent pipes, but rather a result of incorrect storage and transportation methods. Most cases of flattened bent pipes occur during storage and transportation.
2. Assessment and Correction:
- Typically, after a bent pipe is flattened, it should be assessed and tested for the severity of deformation and its impact on usability. If the pipe is undamaged, it can be corrected using a circular corrector, which is more convenient and accurate. In the absence of a corrector, some may attempt to restore the pipe's original shape by tapping it. However, this method is not recommended and should only be used in emergencies.
It's important to prevent bent pipes from becoming flattened. Don't assume that they can withstand heavy loads simply because they have good compressive strength. In addition to using bent pipes correctly, regular maintenance and care are essential to prevent flattening and prolong the pipe's lifespan.
SINO SPECIAL METAL supplies various types of pipe fittings, flanges, and pipes made from different materials. We are a trusted supplier known for delivering high-quality products. For inquiries or purchase requirements, please feel free to contact us.
