Blowout Preventer Brands

Petroleum Oil Tools specializes in remanufacturing these popular BOP brands


Drilling Rig Affiliations

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Remanufactured Double Studded Adapters (DSAs)

Petroleum Oil Tools remanufactures and stocks Double Studded Adapters or “DSAs” of multiple size and pressure ratings from various manufacturers. Our remanufactured drilling DSAs are in accordance with strict API Spec 6A for Loose (Any flange, hub, or other end connector, not integral to a body of an identified piece of equipment.) and Integral (Made as a single unit. Usually referring to connectors (Flanges, Hubs, and/or O.E.C.'s) made as part of a body, or joined to a body by welding; the connectors meeting the API specifications for end and outlet connectors) flanges.

Different manufacturers use different methods so minimum thickness may differ in order for flange faces to meet in parallel contact.

Also see “Annular BOP” here

*API Specification 6A and 16A specifies requirements and gives recommendations for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment and purchasing, of drilling equipment for use in the petroleum and natural gas industries.