Welding stainless steel tubes and pipes typically requires back purging with argon gas when using traditional processes, such as gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW). But the cost of the gas and the setup time for the purging process can be significant, especially as the pipe diameters and lengths increase. When welding 300 series stainless steels, contractors can eliminate back purging in open-root pipe welding and still achieve high weld quality, retain the material’s corrosion resistance, and meet welding procedure specification (WPS) requirements by switching from traditional GTAW or SMAW to a modified short-circuit gas metal arc welding (GMAW) process. A modified short-circuit GMAW process also delivers additional benefits for productivity, efficiency, and ease of use that can help improve the bottom line. Favored for their corrosion resistance and strength, stainless steel alloys are used for many pipe and tube applications, including oil and gas, petrochemical, and biofuels. While GTAW traditionally is used for many stainless steel applications, it has some drawbacks that can be addressed with modified short-circuit GMAW. First, as the sk...