With a crew of fully trained ASME certified welders on staff, AVS can send capable technicians to your site to perform even the most major repair work. AVS welders have helped numerous customers attach equipment upgrades, repair leaks, add piping and fittings, install new furnace ports, add structural reinforcements and other accessories to their furnaces. As a certified ASME weld shop with a registered R-stamp, AVS can perform authorized hot work on ASME pressure vessels as well.