China has put its first complete intelligent welding system for ultra-deep shafts into operation.

The system is now in use at the Songyang Pumped Storage Power Station in east China’s Zhejiang Province.

It was independently developed to meet the extreme conditions of deep underground projects, including confined spaces and narrow shafts.

The equipment enables automated welding of high-strength steel pipes, addressing a key technical gap in ultra-deep shaft construction.

The breakthrough marks another step forward in China's drive to develop its own equipment for ultra-deep underground engineering.