Specifications Full-Automatic Cage Welding Machine introduction: HGZ series Cage welding machine is one of the necessary equipments to make reinforced pipes; it is capable to make cage from 300-3000mm in diameter, and length 4 meter. Features: 1.with Touch Screen PLC, easy to operate, with automatic memory function. 2.Equipped with pneumatic electrode instead of traditional spring pre-pressing, to protect electrode less abrasion, and more fixed welding.