Coated pipes are commonly used in a variety of industries, including oil and gas, water supply, and construction. These pipes are subjected to various types of treatment to enhance their durability and prevent corrosion. However, when it comes to bending these pipes, concerns arise about whether the coating will be damaged in the process. In this article, we will explore the possibility of bending coated pipes with a hand bender without causing harm to the protective coating.
Understanding Coated Pipes:
Before delving into the bending process, it’s crucial to understand the composition of coated pipes. Coated pipes typically consist of a base material, such as steel or copper, which is layered with a protective coating. The coatings vary based on the intended application and can include epoxy, polyethylene, or even fusion bond epoxy (FBE) coatings. These coatings provide excellent corrosion resistance and increase the lifespan of the pipes.
The Problem with Traditional Pipe Bending:
Traditional pipe bending methods, such as cold bending or hot bending, involve subjecting the pipes to high temperatures or applying force directly to the surface of the pipes. While these methods are effective for bending bare pipes, they pose a risk to the integrity of the protective coating. The heat from hot bending can melt or damage the coating, while the pressure exerted during cold bending can cause cracking or flaking.
Utilizing a Hand Bender:
A hand bender is a convenient tool for bending pipes, especially for small-scale projects or repairs. However, its application to coated pipes requires careful consideration to ensure the protective coating remains intact. Here are some factors to consider when using a hand bender on coated pipes:
1. Coating Integrity:
Before attempting to bend a coated pipe, inspect the coating for any signs of damage or weakness. Any areas of the coating that are flaking or showing signs of deterioration should not be subjected to bending. If there are concerns about the coating’s integrity, it may be necessary to consult a professional or manufacturer for guidance.
2. Hand Bender Size:
Choose a hand bender with the appropriate size and radius for the pipe you are working with. Using a bender that is too small may put excessive pressure on the coating, leading to damage. Ensure that the bender is specifically designed for coated pipes to minimize the risk of harm to the coating.
3. Bend Angle and Radius:
When using a hand bender, be mindful of the angle and radius of the bend. Excessive bending angles or tight radii can increase the risk of coating damage. Slow and steady bends, with gradual angles and larger radii, are less likely to cause harm to the coating.
4. Lubrication:
Apply a suitable lubricant, recommended by the coating manufacturer, on the outside of the pipe before bending. This lubrication helps reduce friction and prevents the coating from scraping or peeling during the bending process.
Bending coated pipes with a hand bender without damaging the coating is indeed a feasible task if done carefully. By selecting the right hand bender, ensuring coating integrity, using appropriate angles and radii, and applying lubrication, the risk of coating damage can be minimized. However, it’s crucial to exercise caution and seek professional advice if in doubt. By following these guidelines, one can safely and effectively bend coated pipes to meet their desired specifications without compromising the coating’s protective properties.