Pipe Welding Basics

For many, steel manufacturing and fabrication almost always involves some type of welding technique to effectively use the metal in a way that will be efficient and useful. Therefore, today we will reinstate our series on welding tips and techniques with an introduction to Pipe Welding.

As for any type of welding, the first VERY important step is making sure you have taken the proper safety precautions. This includes having an auto-dark helmet, apron, flame resistant clothing, safety goggles, work boots, and possibly earmuffs depending on how big the job is. Along with these safety precautions you should also know the basic passes that are involved with each welding project, such as the root pass, hot passes, fill passes and the cap pass. Knowing your welding position is also very important as it will affect how you approach the pipe. There are multiple different positions the pipe can be in, which include the material laying horizontal, vertical, fixed, inclined, or rotating, but the most common types are 1G Rolled and 5G Fixed. 1G Rolled being a horizontal pipe that rotates as the welding occurs and the 5G Fixed being an also horizontal pipe that is rotated around by the welder instead of spinning by itself.

Porosity is the main issue with pipe welding as it occurs when too much hydrogen, oxygen or nitrogen is sucked into the weld pool, causing a weak weld. These welds can be tested multiple different ways. Either a fillet break test or bend test are the most common however they are both destructive forms of testing as they involving bending the metal a certain way. Non-destructively you can always test your weld electromagnetically if available. Once you are consistently producing effective welds you can attempt to get certifications in multiple different classes. After this you will most likely find yourself on the job site welding with a product that may have come from Ohio Galvanized Tube!

Learn more about OGT at https://www.ohgalvanizedtube.com/.

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