On-Site Hardness Testing
On-site metal hardness verification for the oil & gas industry ensures your equipment meets material specifications without the downtime of lab testing, verifying welds, components, and critical assets rapidly and accurately in the field.
Field / On-Site
UCI · Rebound · Telebrinell
Equotip 540 UCI
Oil & gas
On-site hardness testing answers a question that usually cannot wait: whether a weld, a repair, or a delivered component is within specification before the asset goes back into service. Results are in hand while the crew is still on site, and no material is removed.
What it is
PMI Specialists offers in-field hardness testing to verify that welds, components, and critical assets meet their material specifications, rapidly and accurately, and without the downtime of removing samples for laboratory testing.
Where it applies
The service covers a wide range of oil & gas equipment and structures:
- Drilling rigs and offshore platforms
- Pipelines and flowlines
- Refineries and petrochemical plants
- Pressure vessels, valves, and pumps
- Rotating equipment and storage tanks
- Structural supports
- Welds, including heat-affected zones
Testing methods we offer
UCI (Ultrasonic Contact Impedance)
A fast, semi-destructive method using a diamond probe, well suited to welds, pipes, valves, and tanks.
Rebound (Leeb)
A non-destructive approach that measures rebound velocity, ideal for large or heavy components.
Telebrinell
An alternative to standard Brinell testing that enables hardness measurements on large, immovable components without sample removal.
Why it matters
Verifying hardness in place confirms material condition, heat-treat integrity, and weld quality on operating assets, keeping equipment in specification and in service while avoiding the cost and delay of lab turnaround.
On-site hardness testing
Portable hardness verification on installed equipment.
Often ordered together
Frequently asked questions
What field hardness methods do you offer?
UCI (Ultrasonic Contact Impedance) using a diamond probe, Rebound (Leeb), and Telebrinell. The method is chosen to suit the component, from welds and pipe to large, immovable equipment.
Is on-site hardness testing destructive?
The Rebound (Leeb) and Telebrinell methods are non-destructive; UCI is a fast, minimally invasive method well suited to welds, pipes, valves, and tanks.
What equipment do you use?
Our Equotip 540 UCI hardness tester measures fine-grained material of nearly any shape, including heat-treated surfaces, with adjustable test loads.
What assets can you test in place?
Drilling rigs and offshore platforms, pipelines and flowlines, refineries and petrochemical plants, pressure vessels, valves, pumps, rotating equipment, storage tanks, structural supports, and welds including heat-affected zones.
Why test hardness on-site instead of in the lab?
In-place testing confirms material condition, heat-treat integrity, and weld quality on operating assets, keeping equipment in specification and in service while avoiding lab turnaround.
Where do you provide on-site hardness testing?
We are based near Houston, Texas, serve the Gulf Coast, and deploy nationwide and internationally.
Need hardness verified on-site?
Tell us the assets and the specification. Our field team brings the right method to your location and confirms hardness without pulling equipment out of service.