Plasma cladding (PAW) is widely adopted for hard‑sealing overlay on triple offset butterfly valves and gate valves. Huayan automated plasma cladding equipment delivers low dilution‑rate overlay with Stellite, 507Mo and nickel‑base alloys, ensuring high wear‑resistance and corrosion‑resistance for critical valve components. Our AI‑free‑programming control system helps operators produce consistent hard‑facing quality without highly‑skilled welding experience.