The story
It is a former subdivision of the Schoeller-Bleckmann group, a manufacturer particularly of steel products which was nationalised in 1946; the company was spun off in the period 1993-7. The company is based in Ternitz, south-west of Vienna. As of October 2015, it is a member of the Austrian Traded Index, the index of the twenty largest companies traded on the Vienna stock exchange. A subdivision is named Schoeller-Bleckmann Oilfield Technology.
From Wikipedia’s article on Schoeller-Bleckmann Oilfield Equipment, shared under CC BY-SA 4.0.5