CAPABILITIES THAT DELIVER
From Engineering to Enduring Performance.
One accountable partner for mission-critical equipment: engineered, built, documented, and supported under one roof.
Operators, EPCs, and equipment manufacturers bring Westerman the scopes that can’t slip. We pair application engineering and disciplined project management with more than half a million square feet of in-house fabrication capacity, so complex packages are built and proven in the shop, not figured out in the field.
500,000+
Sq ft of manufacturing space under roof
1.14M+
Sq ft of fenced yard for staging and storage
4
U.S. facilities in Ohio, Oklahoma, and Wyoming
1909
More than a century of engineered equipment
100%
Employee owned, with an owner behind every job
THE FULL LIFECYCLE
Six Capabilities. One Point of Accountability.
Integrated capabilities and experienced teams ensure your project is built right, on time, and ready for what’s next.
CUSTOM ENGINEERING
Engineered Around Your Conditions, Not a Catalog
With many OEMs, you get what you get. Westerman engineers start with
your process data, site constraints, and required codes, then design the
package to fit. The result is equipment that performs better, lasts longer, and
costs less to operate over its life.
- Design to ASME Section VIII, API 12F, UL 142, and ANSI N14.1
- Proprietary separation internals and heater package designs
- Integrated skids combining vessels, piping, controls, and structure
- Engineering partnerships with OEMs, including our hydronic systems work with Amtrol
FABRICATION CAPACITY
Capacity to Take On the Whole Package
When a project needs more than one shop can give, Westerman has the floor space, yard, and certified workforce to carry it. Building offsite compresses field labor, reduces safety exposure, and keeps commissioning on schedule, even when weather and site conditions don’t cooperate.
- ASME code pressure vessels and pressure-retaining assemblies
- Atmospheric, pressure, and UL 142 listed storage tanks
- Modular skids, pipe spools, and structural steel
- Certified welding procedures, welder qualification, and NDE
- Hydrostatic, pneumatic, and factory acceptance testing
FOUR LOCATIONS. ONE STANDARD.
Built Close to Where You Operate
MANUFACTURING & YARD
Bremen, Ohio
68-acre campus · 232,000 sq ft manufacturing · 37 acres outside storage
MANUFACTURING & YARD
Tulsa (Catoosa), Oklahoma
126,000 sq ft facility · 239,000 sq ft fenced yard storage
MANUFACTURING & YARD
Casper, Wyoming
138,683 sq ft facility · 900,000 sq ft fenced yard storage
NEW IN 2026
Hebron, Ohio
Expanded Ohio operations adding capacity for growing programs
PROJECT MANAGEMENT
Kickoff to Turnover, One Accountable Team
Large packages succeed or fail on coordination. Our project managers own the plan, the vendors, and the paperwork, so your team gets clear milestones and no surprises.
Kickoff & Design Review
Confirm scope, specs, codes, and schedules. Submit drawings and calculations for approval.
Procurement & Buyout
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Fabrication & Inspection
Build in our shops with documented inspection and test plans and customer hold points.
Testing & Turnover
Hydro and factory acceptance testing, then a complete, traceable documentation package.
Delivery & Support
Ship- ready preservation, delivery coordination, and field and aftermarket support.
WHO WE BUILD FOR
A Fabrication Partner for Operators and Manufacturers
For operators & Owners
Equipment You Can Count On From Day One
Oil and gas producers, midstream operators, gas utilities, power producers, data center developers, and federal sites rely on Westerman for equipment that arrives complete, documented, and ready to set.
- Well-pad production equipment engineered for each pad's conditions
- Engineered packages sized to your process and site
- Offsite build and validation that shortens field schedules
- Aftermarket support from the team that built it
For OEMS, EPCS & Prime Contractors
Certified Capacity When You Need to Scale
Equipment manufacturers and contractors partner with Westerman to add code-stamped fabrication capacity, modularization, and project execution without adding overhead.
- Fabrication to your designs, specs, and quality requirements
- Integration and packaging of your technology onto skids
- Proven OEM partnerships, including Amtrol and Alten
CREDENTIALS
Qualified for Mission-Critical Work
ASME U/UM/PP
Section VIII pressure vessel and pressure piping fabrication.
National Board R
Repair and alteration of code-stamped equipment
ISO 9001:2015
Certified quality management system.
API Q1 & 12F
API Q1 certified and API 12F monogram holder
NQA-1
Nuclear QA program, 10CFR50 App. B and 10CFR71 Subpart H compliant.
UL 142
Certified for listed above-ground steel storage tanks.
CMMC Level 2
Handling of controlled unclassified information on DOD programs.
NDE Level II/III & NACE
Certified nondestructive examination and coatings personnel.
Have a Mission-Critical Scope That Needs Capacity?
Send us your specs, drawings, or RFQ package and our team will follow up to scope the work.