Salzgitter Mannesmann Grobblech GmbH (formerly Mannesmannröhren Mülheim GmbH) is a wholly owned subsidiary of Mannesmannröhren-Werke GmbH. Its operations cover a broad and varied spectrum of fields, the most important of ......Salzgitter Mannesmann Grobblech GmbH (formerly Mannesmannröhren Mülheim GmbH) is a wholly owned subsidiary of Mannesmannröhren-Werke GmbH. Its operations cover a broad and varied spectrum of fields, the most important of which is the production of starting material for large-diameter pipe and other applications in the Heavy Plate Mill. An additional activity is the manufacture of pipe bends in our Pipe Bending Plant. Production covers a wide range of dimensions and grades in both seamless and welded qualities. Our scope of services includes a Test Centre, which is one of the most efficient and advanced in Germany. Our Tribotechnology division rounds off our state-of-the-art service spectrum, offering expertise in the physical and chemical treatment of oils and oil-bearing mixtures as well as in lubrication engineering investigations and analyses. Our strength lies in the outstanding quality of our products and services. And in our firm commitment to customer satisfaction.