Profile: Dywidag Systems International U. S. A., Inc. produces and supplies products for mining and construction applications. We supply and implement Dywidag-systems. We offer a complete product line in strand and bar post-tensioning as well as stay-cables to fully serve the post-tensioning construction industry. Our Dywidag monostrands are made up of cold-drawn, low-relaxation and seven wire strands of 0.5" or 0.6" diameter.