All photographs © 1999 Soren Krohn		Welding Wind Turbine Towers Steel Sections are Powder Welded Each tower section is welded with a seam lengthwise, plus a circular welding seam to connect to the next section of the tower. This is done by placing the tower sections on a rolling bed which slowly rotates the tower, while an operator with a powder welding machine welds the sections from the outside...
		...and another operator welds a corresponding set of seams on the inside.
		Checking Welding Seams for Safety Welding seams in towers are checked using ultrasonic or x-ray devices. Important seams are checked 100%, while other seams are checked on a sample basis.
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