Our brand ASDO - Anker Schroeder DOrtmund - represents reliability and safety in the design and manufacture of heavy anchoring and tie bar production. Today the tension bar and forging company is managed by Daniel Schroeder, a great grandson of the company founder. ASDO tie bars, tension rods and shackles are used the world over for waterfront structures, marine structures, civil engineering, retaining structures, structural engineering, bridge construction, heavy machinery and lifting.