On November 3, China's first complete set of pressure steel pipe intelligent welding equipment dedicated to ultra-deep shafts was put into use at the Zhejiang Songyang Pumped Storage Power Station. It was independently developed for the extreme working conditions of small and deep wells in deep ground engineering to make up for the shortcomings in automated welding of high-strength steel pipes for ultra-deep shafts. The equipment is equipped with an outer ring seam welding robot and an automatic inner ring seam welding machine. The welding speed can reach 30 to 50 cm per minute. The efficiency is more than 65% higher than traditional manual welding, and the one-time pass rate of the weld is 99%. The equipment was operated at the Songyang Power Station with a total depth of 637 meters of water diversion shafts to form an ultra-deep shaft pressure steel pipe welding method.

On November 3, China's first complete set of pressure steel pipe intelligent welding equipment dedicated to ultra-deep shafts was put into use at the Zhejiang Songyang Pumped Storage Power Station. It was independently developed for the extreme working conditions of small and deep wells in deep ground engineering to make up for the shortcomings in automated welding of high-strength steel pipes for ultra-deep shafts. The equipment is equipped with an outer ring seam welding robot and an automatic inner ring seam welding machine. The welding speed can reach 30 to 50 cm per minute. The efficiency is more than 65% higher than traditional manual welding, and the one-time pass rate of the weld is 99%. The equipment was operated at the Songyang Power Station with a total depth of 637 meters of water diversion shafts to form an ultra-deep shaft pressure steel pipe welding method.