Tapered Spiral Welding
Keystone Tower System’s automated tower production brings modern manufacturing to the steel tower industry, dramatically increasing production rates and unlocking new possibilities for welded steel towers.

In-Factory Applications
A tapered spiral mill boosts total tower factory throughput by 50%. Keystone eliminates the need for manual growing lines with a single machine that simultaneously performs all rolling and welding operations.

In-Field Applications
Keystone mills can be operated at the wind project, enabling towers that are far larger than today’s transport constrained towers. Keystone is currently working with leading wind turbine manufacturers to integrate large diameter, field-welded towers into their turbine offerings, enabling welded steel towers to reach hub-heights in excess of 140m.