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Best Practices for Welding and Joining Corten Pipes

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Corten pipes are becoming increasingly popular in architecture, construction, and industrial uses due to their aesthetic appeal and exceptional durability. Corten steel, also known as weathering steel, forms a protective layer that slows corrosion. Therefore, it requires specific welding techniques and skills to maintain its rusted appearance. This blog will discuss the best practices for welding and joining Corten pipes.

 

Stripping Rust Layers:

Corten pipes are covered with rust, which is highly corrosive but can resist further corrosion. Before welding, it is imperative to use a wire brush to strip away the rust to reveal a clean and weldable surface. Remember that the wire brush should not be reused with other steels to prevent contamination.

 

Wear Proper Safety Gear:

Welding is a risky process, and taking necessary precautions to prevent accidents is crucial. Welding with Corten pipes requires wearing safety gear, including leather gloves, helmets with lenses, fire-resistant clothing, and respirators. Also, ensure the welding environment is well-ventilated to avoid breathing hazardous fumes.

 

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Welding Process:

Corten pipes are welded using MIG, TIG or stick welding. The right type of welding process depends on the pipe’s thickness and the result you want to achieve. MIG welding is the best option for thinner Corten pipes, while TIG welding is ideal for thicker Corten pipes. When using stick welding, low-hydrogen electrodes should be used. Also, weld only short lengths to avoid overheating and warping.

 

Heat Control:

Corten pipes are sensitive to heat and may become weak when exposed to high temperatures. Therefore, proper heat control is essential while welding. Preheat the pipes to a temperature range of 400°F – 600°F to help reduce the risk of warping and cracking. Also, avoid cooling the pipes immediately after welding, which can cause cracking in the welded area.

 

Finishing:

Once welding is complete, apply a coating of rust-stabilizing solution to protect the welded area from further corrosion. This will help the newly welded area blend in with the rest of the pipe. Always choose a rust-stabilizing solution formulated specifically for Corten steel to achieve the best results.

 

Conclusion:

Welding Corten pipes requires specific techniques and skills to preserve their rusted look and maintain durability. Before welding:

  • Strip away the rust layers.
  • Wear proper safety gear.
  • Choose the right welding process.
  • Properly control the heat.
  • Apply the rust-stabilizing solution to the welded area.

Following these best practices, you can ensure that the Corten pipes will be weldable, structurally sound, and visually stunning.

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