Keystone Tower Systems claims its spiral-welded towers can reduce costs and manufacturing time
Keystone's spiral-welding tower equipment at its factory in Pampa, Texas.
US Engineering firm Keystone Tower Systems has started commercial production of utility-scale spiral-welded towers at its new factory in Pampa, northern Texas.
Spiral welding is a process where a single machine completes the joining, rolling, fitting, welding and severing of a tower section, resulting in the continuous production of steel tower shells.
The process has been proven for producing cylindrical pipe and pilings, and should increase strength and save steel compared with traditional can-welded win turbine towers, Keystone claimed.
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