Weld Mart USA Inc. is a retail company based in Wheeling, Illinois, United States. With over 40 years of experience, they specialize in welding equipment and supplies, offering hard-to-find parts for vintage welders like the Lincoln SA-200 and repair parts for Continental Engine Drives. Their services include troubleshooting, servicing, and repairing the Lincoln SA-200 welder, as well as providing upgrades and replacement MIG guns, plasma cutters, and spool guns. Weld Mart USA also carries a complete line of plasma torch consumables and offers expertise in the plasma cutting industry. They provide a range of products, technical manuals, schematics, and expert technicians for machine rebuilding.