Tri‑State Flame Hardening Company

Warren, MI — Home & Local Services. Tri‑State Flame Hardening Co provides flame hardening, flame annealing, flame tempering, precision straightening, vibratory stress relieving, and related heat‑treatment services, including mobile and rush services and four‑phase inspection. They specialize in industrial metal processing for components requiring enhanced wear resistance, precise straightening, and stress relief.