Delta (Doha) Corporation is an engineering design and manufacturing company of Wellhead Equipment & Valves, based in Doha, Qatar. It was established in Conroe, U.S.A in 1977, under the trade  name  of  Oil  Tool  Specialties  Company (OTS).  The company  was  formed  to  manufacture API 6A Gate Valves and Wellhead Equipment, and it has held the API license since that time.

Delta Corporation was acquired in early 1995 by a Qatari investor. Following the acquisition,  it  was  felt  highly  desirable  to  have an operation based in Qatar to serve the Middle East, African   and Asian  markets  would  be   highly desirable.  Delta (Doha) Corporation was established in early 1995 as a separate entity to the US based operation, and a manufacturing facility was established in Doha, Qatar. This facility has approximately 9000 sq. meters and became operational in December 1995. As part of a general restructuring in 1996, it was decided that Delta Doha would be the Corporate Headquarters, and the US operation was then closed. 
 
Delta (Doha) Corporation is the only indigenous company designing and manufacturing Valves and Wellhead Equipment in the region and as such offers a unique service to the oil companies in Qatar, the Gulf and the Middle East. Delta has a twenty-Seven year record of manufacturing different types of API Valves and Wellhead & Xmas Tree Equipment in U.S.A and in Qatar.
 
The Doha facility is strategically located to offer local manufacturing, refurbishment and testing of valves and wellhead equipment to the Qatar market and the Middle East in general. We also have the capability to undertake fabrication and general machining work, and small projects.
 
We have developed our product line and manufacturing facility in Doha, Qatar, to world class standards and are capable of a high level of detail attention to each order regarding both engineering and manufacture. Due to our location, Delta can combine this with competitive prices and the fastest deliveries. We are committed to the development and expansion through innovative ideas from experienced staff and to consideration of customer feedback on our products and services.

Delta offers a complete line of wellhead products for production and drilling use. This encompasses heavy duty gate valves, both manual and actuated types, for Christmas Trees and casing and tubing suspension systems. All valves and wellhead systems are designed and manufactured to the relevant API standards and comply with quality system requirements.

Delta products meet relevant standards for materials supply to API, NACE, ASTM, and ASME requirements and the design of all standard products are approved by Lloyds Register. Delta's engineers can quickly develop new designs to meet specialized requirements for Christmas Trees and wellheads or recommend variations to our products to meet other severe field conditions. 
 
The Doha facility has been approved by API to apply the API monogram on products manufactured under specification 6A, 6D, 14D and 16A, under license numbers 6A-0358, 6D-0194, 14D-0038 and 16A-0093 and is fully capable of manufacturing the entire Delta product range. Delta has also been accredited by Lloyds Register to ISO 9001.
 
The trained valve technicians employed by Delta (Doha) have extensive experience in the service, repair, and testing of a wide range of valves/actuators and have worked on most of the major manufacturers equipment. Delta (Doha) has full in house capability for all aspects of engineering design and development, and support to the manufacturing and service operations.

The Doha operation also offers a full Field Service capability, with experienced engineers able to carry out equipment installation, testing and service on location. The refurbishment and re-certification of API equipment is an important part of the work carried out in Doha, and this offers the customer and opportunity to have a fully API backed refurbishment carried out on critical equipment on a "local" basis, resulting in cost savings and reduction in turnaround time. Delta (Doha) have extensive experience in the refurbishment and testing on both manual and actuated versions of Ball Valves, Gate Valves, Butterfly Valves, Plug Valves, 4-Way valves, Check Valves-in fact all valve types.

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