Vallourec is out to steel its clients' businesses -- the company ranks among the world's top producers of steel tubing. It caters to oil and gas, automotive, and mechanical engineering customers worldwide. Vallourec's seamless tubes unit makes welded and drawn tubes primarily for the energy industry, while its automotive and specialty products division makes tubes and stainless steel products for the auto industry, among others. Its Vallourec & Mannesmann Tubes subsidiary produces seamless tubes. Following a few years of acquisitions, divestitures, and general reorganization, the energy sector (including the oil and gas and power generation markets) accounts for more than two-thirds of Vallourec's sales.