Dril-Quip, Inc., together with its subsidiaries, designs, manufactures, sells, and services engineered offshore drilling and production equipment for use in deepwater, harsh environment, and severe service applications worldwide. The company operates through three segments: Western Hemisphere, Eastern Hemisphere, and Asia-Pacific. Its principal products comprise subsea and surface wellheads, subsea and surface production trees, subsea control systems and manifolds, mudline hanger systems, specialty connectors and associated pipe, drilling and production riser systems, liner hangers, wellhead connectors, and diverters. The company also provides technical advisory services, and rework and reconditioning services, as well as rental of running tools for use in the installation and retrieval of its products. Its products are used for drilling and production of oil and gas wells on offshore platforms; tension leg platforms, which are floating production platforms connected to the ocean floor via vertical mooring tethers; Spars, a floating cylindrical structure; and floating production, storage, and offloading monohull moored vessels, as well as to explore for oil and gas from offshore drilling rigs, such as floating rigs and jack-up rigs. The company sells its products directly through its sales personnel, independent sales agents, and representatives to integrated, independent, and foreign national oil and gas companies, as well as offshore drilling contractors, and engineering and construction companies. Dril-Quip, Inc. was founded in 1981 and is headquartered in Houston, Texas.