September 8, 2010 | By Joe Bundy
Welding chrome-moly tube and pipe conventionally is done with shielded metal arc welding (SMAW) or submerged arc welding (SAW). Flux-cored arc welding (FCAW) has been tried, but the wires had some drawbacks that prevented widespread acceptance. Recent developments have reduced some of these disadvantages, so GMAW deserves a fresh look. The switch might lead to improvements in the weld's characteristics or welding productivity.
May 13, 2008 | By Joe Bundy
Filler metal product approval codes can seem like a foreign language. One thing is certain, and that is each agency that establishes product approvals, such as AWS or ASME, does so to ensure filler metals meet the requirements for which they are intended. Understanding the meaning behind each set of filler metal product approvals will help you to better understand your filler metal's capabilities.