Coal Tech LLC is a licensed, bonded, and insured commercial mobile welding and fabrication company serving Washington State. We specialize in fully mobile, on-site welding to eliminate downtime and logistics for contractors, facility managers, and industrial clients. Our core expertise includes the fabrication, repair, and retrofit of hollow metal doors and frames, sidelite repairs, and fire-rated opening work. We provide expert MIG, TIG, Stick, and Flux-Core welding for aluminum, stainless, and carbon steel. Why Choose Us: Mobile & On-Site: We bring the shop to your job site. Emergency Response: Same-day dispatch for urgent repairs. Specialized Repair: Experts in commercial door hardware and frame realignment. 5.0-Star rating from our clients.