Advanced dual-gun submerged arc welding equipment is at work. Technicians fabricate large-diameter fully welded ball valve bodies with high-precision automatic welding. The synchronized double torches guarantee deep, uniform and high-strength welding seams. The all-welded structure effectively reduces leakage risks. These reliable ball valves are widely applied in natural gas, petroleum and heating pipeline projects, providing safe and long-lasting fluid control solutions for global energy infrastructure.