DUKTUS

Metal stakes for piping; pipes of metal; metal flanges; valves and slides of metal for piping other than parts of machines; accessory parts of metal, namely, metal bars being fasteners, metal sealing rings and clamp rings and their pipe joints of metal; none of the foregoing goods being sanitary installations

Casting of metals; metal treating

Research in the fields of mechanical and civil engineering and environmental technology; quality control for others; technical consultancy in the fields of mechanical and civil engineering and environmental technology; Engineering services, particularly technical project planning for mechanical and civil engineering and environmental technology projects