Phoenix Store. Our Phoenix store proudly serves businesses and welders across the Valley, including Downtown Phoenix, Central City, South Phoenix, Laveen, Maryvale, Arcadia, Biltmore, Tempe, Scottsdale, Glendale, Peoria, Tolleson, and Avondale. If you are looking for a reliable welding supply store near Phoenix, AZ, Phoenix Welding Supply is ready to help.