Established in Pittsburgh in 1908, Liberty Welding Company is a family-owned welding and specialty machine shop best known for repairing truck and trailer axle spindles on site. Owner Bill Ferrari joined the company in 1971 and later developed patented tools that replace spindles without removing the axle housing, while the shop continues to take on general repairs, machining, and custom fabrication. Liberty Welding describes itself as Pittsburgh’s oldest welding company and America’s oldest axle repair company.