AWS A5.6/A5.6M:2008 (R2017)
Specification for Copper and Copper-Alloy Electrodes for Shielded Metal Arc Welding
standard by American Welding Society, 11/06/2007
AWS C4.4/C4.4M:2007
Recommended Practices for Heat Shaping and Straightening with Oxyfuel Gas Heating Torches
standard by American Welding Society, 2007