National Welding Corporation provides high production field welding and fitting services in key regions across the United States. They specialize in production welding for various projects including water pipelines, tunnel liner installations, bridges, and seismic bridge upgrades. National Welding aims to remove welding from the contractor's critical path, allowing them to focus on more lucrative aspects of the work. Their services extend from Boston to Anchorage, utilizing custom-designed welding trucks and equipment. The company's purpose is to relieve contractors of the burden of managing welders and welding operations, offering efficient and seasoned crews for projects.