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Celebrating 50 years of Quality and Service|New and improved Research & Development Facility
Custom Threading Inc.
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Since 1961, Custom Threading, Inc. has provided the Oil & Gas industries with specialty threading on downhole tubing and casing accessories. Reliable products coupled with our emphasis on service has made Custom Threading a leader in delivering high quality, on-time, downhole threading to our clients.

Quality control is an integral part of every job we do at Custom Threading. We are VAM®, ISO 9001:2015 API 5CT & API Spec. 7.1 to API 7-1 certified and our plant operates under strict API guidelines as we uphold an impeccable compliance record.

Custom Threading can provide your company with an array of end finishing, swaging mandreling and stress relieving, manganese phosphating, zinc phosphating, grit blasting, vibro etching, paint stenciling, low stress out stamping, and many other useful services.

Versatile enough to thread “range three” pipe 2 3/8 “ to 13 5/8” O-D with 21.5” through hole machining capacity. We offer threading for risers, well heads, pup-joints, nipples, crossover subs, adapters and much more. Threading services are available in premium lines, VAM® and API Connections.

Custom Threading is known for its outstanding reputation as a Research & Development provider per customer supplied specifications.

Vision statement for CTI.

In order to insure the Continuation of and prosperity of Custom Threading, Inc.

Custom Threading, Inc. a quality driven premium threading facility located in Houston, Texas will endeavor to continue in its reputation as the highest quality Premium Threading Facility for the production of OCTG equipment in the United States. Over the next Five years CTI will become the premier facility for difficult high profile threading projects on OCTG and R&D projects. We shall continually seek out new certifications and opportunities. We shall continually maintain our Quality, delivery, customer satisfaction, and integrity model while we double our capacity In the OCTG and R&D market place. To augment these goals CTI will add milling operations as well as three dimensional (3d) printing capacities for the prototype production of R&D samples.

CTI Policy

Custom Threading, Inc. personnel are committed to:

  • Achieving the highest performance in Operational Excellence. This will be achieved through demonstrated leadership and ethical behavior. Custom Threading Inc. will endeavor to conduct all operations in a manner that will protect the environment, communities and the integrity of the company’s human, physical, and financial resources.
  • Consistently meet Customer Requirements for the manufacture of oilfield related threaded products as per ISO 9001 and applicable API 5CT and API 7-1 requirements.
  • Continually improve our work processes and the effectiveness of our quality management system.


  1. On Time Delivery at least 92%
  2. Scrap less than 1%
  3. 0 lost time accidents
  4. 100% accidents free workplace

Management Commitment

I fully support the policies, objectives and procedures set forth in our Quality Management System and will provide the resources necessary for its continual maintenance, evaluation and improvement.