The welding joint of a sonic logging pipe is a critical part that ensures the pipe’s sealing performance and structural integrity during

 concrete pouring and ultrasonic testing. Each joint is welded using precision automatic or semi-automatic processes, ensuring

 full penetration, uniform weld seams, and smooth inner surfaces. After welding, every joint undergoes visual inspection, 

air pressure testing, and ultrasonic or X-ray examination to prevent leakage and internal defects.