Grant Prideco, Inc., together with its subsidiaries, engages in the development of drill stem technology; and manufacture, sale, and service of drill pipes, and drill bit technology and specialty tools worldwide. It also provides engineered connections and premium tubular products and services. The company operates through three segments: Drilling Products and Services, ReedHycalog, and Tubular Technology and Services. The Drilling Products and Services segment manufactures and sells various dri ...