We specialize in precision welding and fabrication of process equipment designed for the demanding oil, gas, and energy industry. From ASME-certified pressure vessels to custom components, every project is built to meet strict safety and performance standards. Our workmanship ensures reliable, long-lasting results in even the toughest operating conditions.







Quality, safety, and reliability are at the core of everything we do. Our team follows strict industry standards to ensure every project meets or exceeds expectations. From the first weld to final inspection, we focus on delivering work that stands the test of time. With our commitment to meeting deadlines, you can trust us to keep your operations running smoothly.
Oak Process Systems (OPS), located in South Texas near Corpus Christi, is a manufacturer/packager of process equipment for the energy industry.
OPS fabricates ASME code certified pressure vessels for use in the processing of oil and gas for upstream and midstream markets. While the primary focus of the business is fabrication, OPS is more that just a welding shop.
We bring the knowledge and experience necessary to help customers solve problems and meet deadlines with both new construction as well as maintenance work with repairs and alterations.
While safety is always a top priority, Quality and dependablility are the traits we live by.
Our ASME-certified pressure vessels are engineered to meet the highest safety, quality, and performance standards. Every project is built to deliver reliable results in the most demanding oil and gas environments.
From new construction to critical repairs, our skilled fabrication team delivers precision, speed, and reliability. We keep your energy projects on schedule without compromising quality or safety.
We bring the experience and ingenuity to tackle complex fabrication challenges for upstream and midstream operations. Our solutions are designed to optimize performance and minimize downtime.
We offer a full range of fabrication, repair, and maintenance services for process equipment in the oil, gas, and energy sectors. From new construction to alterations and emergency repairs, our team delivers safe, high-quality solutions that keep your operations running efficiently. Every service is backed by our commitment to precision, reliability, and on-time performance.
Oak Process Systems is an ASME-certified fabricator of pressure vessels serving upstream and midstream oil and gas operations. Located in South Texas near Corpus Christi, OPS supports both new builds and repair or alteration work, bringing deep technical knowledge to every project. The pressure vessels are excellent at performing under the extreme demands of energy production and transport. With safety, quality, and dependability at the core, OPS delivers equipment designed to meet both code requirements and field realities.
Fabrication and welding sit at the core of safe, efficient energy infrastructure. With deep experience across upstream and midstream operations, Oak Process Systems delivers precision-built components that meet the demands of high-pressure, high-performance environments.
The teams handle everything from ASME-coded vessels to field-assembled pipeline systems, built to spec and delivered on schedule. Backed by certified welders and proven processes, OPS supports both new construction and retrofit projects as a full-service partner, not just a fabrication shop.
Pipeline systems demand precise construction and reliable field maintenance to operate safely and stay in compliance. Oak Process Systems delivers both, supporting upstream and midstream operations with full-scope services from new builds to emergency response.
The team handles everything from welding and valve installation to anomaly digs and right-of-way upkeep. OPS crews work efficiently, meet strict safety standards, and stay ready to mobilize. Each pipeline construction project moves forward with clear coordination, certified work, and long-term field integrity.
Soft crafts encompass important finishing and support services that make energy infrastructure safe, functional, and compliant. With in-house crews and field-tested workflows, Oak Process Systems integrate soft craft services directly into construction, maintenance, and turnaround projects. The result: fewer delays, safer job sites, and tighter control over quality, schedule, and cost. They’re more than support, they’re key systems.
Successful energy infrastructure begins with the ground itself. From wellpad clearing to concrete foundation work, every element of the site must have shaping, stabilization, and prepare for long-term performance.
Oak Process Systems delivers field-proven civil services that support upstream and midstream development from day one. Whether supporting new facility construction or modifying an existing site, they build surfaces and subsurfaces that carry structural load, manage environmental exposure, and stay within design tolerance.
Measurement systems provide the data backbone for oil and gas operations, from production tracking to regulatory reporting. Accurate flow, temperature, and density readings ensure custody transfer integrity, system optimization, and compliance. Oak Process Systems delivers these capabilities through engineered solutions built to perform under real-world conditions.
Our clients trust us to deliver exceptional results on every project, no matter the size or complexity. Their feedback highlights our commitment to quality, safety, and on-time performance. We take pride in building lasting partnerships based on reliability and results. Hear directly from the companies who count on us to keep their operations running smoothly.

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In 2023, the global market was valued at approximately USD 53.6 billion, with projections to grow to USD 55.7 billion by 2024 and rise further to USD 81.6 billion by 2032, reflecting a CAGR of around 4.9%
The global oil & gas fabrication sector is estimated at USD 5.56 billion in 2024, projected to grow to USD 7.95 billion by 2033, at a 4.06% CAGR
The global market for midstream oil & gas equipment (encompassing pipelines, processing, storage systems, etc.) was valued at USD 28.4 billion in 2023 and is projected to reach USD 70.4 billion by 2033, growing at a CAGR of 9.5%
In the United States, the pressure vessel market was valued at USD 8.62 billion in 2023 and is expected to grow to USD 9.5 billion in 2024, eventually reaching USD 17 billion by 2035, with a CAGR of approximately 5.43%
The need for high-quality oil and gas equipment is growing fast, with the global pressure vessel market expected to surpass $80 billion by 2032. Fabrication demand is also on the rise, climbing from $5.6 billion in 2024 to nearly $8 billion by 2033, while midstream equipment spending is projected to reach $70 billion. Backed by ASME certification, decades of experience, and a problem-solving approach, we deliver the fabrication, repairs, and alterations that keep energy projects safe, reliable, and on schedule.
The Oak Process team is made up of skilled professionals with decades of combined experience in fabrication, repairs, and maintenance. We bring together technical expertise, industry knowledge, and a commitment to safety and quality in everything we do.
Our collaborative approach ensures every project is completed with precision and efficiency. When you work with Oak Process, you gain a dedicated partner invested in your success.
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