Under which code is GMAW welding on short-circuiting prohibited?

The GMAW (Gas Metal Arc Welding) process on short-circuiting is prohibited under the D1.1 code, which is the Structural Welding Code – Steel. This code outlines the necessary requirements for welding practices that ensure the structural integrity and safety of steel structures.

One reason for this prohibition is that short-circuiting, while it can be used in specific applications, can lead to issues with weld quality, especially in critical structural applications. The D1.1 code emphasizes rigorous standards to prevent defects such as incomplete fusion or lack of penetration, which could compromise the weld joint. Therefore, specifying that short-circuiting is not allowed in this context reflects a commitment to maintaining high weld quality and reliability in steel construction.

In contrast, the other codes listed address different materials or structural applications. D1.2 pertains to aluminum structures, D1.3 covers sheet steel welding, and D1.5 focuses on bridge welding. Each of these codes has unique specifications and practices that may differ substantially from those outlined in D1.1, further emphasizing the importance of referring to the appropriate code for specific welding procedures and practices.