https://www.txhmachine.com/products/heavy-duty-spiral-welded-pipe-production-line.html
A heavy-duty spiral welded pipe production line is a manufacturing set-up used for producing large diameter and thick-walled steel pipes. These production lines are designed to handle heavy-duty applications and employ advanced spiral welding pipe machine technologies such as plasma arc welding and digital control systems for high precision, speed, and reliability in the production process.