http://www.danscertifiedwelding.com/ When you are seeking highly specialized welding that is approved, of the greatest quality, when it really counts this is where you go. Dan's Certified Welding, Inc. (DCWI) concentrates on the welding procedure called "Gas Tungsten Arc Welding" (GTAW). The additional names that are utilized to explain this procedure are "Tungsten Inert Gas" aka "TIG" Welding. Some also describe this as "heliarc welding" and "fusion welding." This procedure is a very clean procedure of welding. DCWI has been a Boeing authorized provider for over 30 years and is also authorized by numerous other companies. We are located at 9830 Everest St, Downey, CA 90242, with phone number 562-803-1554.