sales@zemanmfg.com
1996 University Ln , Lisle, IL 60532
+1 (331) 801 7700

Quality

OUR APPROACH

Certified to the highest standard.
‍Trusted beyond it.

If it’s good enough for the human body, it’s good enough for your application. Zeman is ISO 13485 certified, a quality benchmark required for life-saving medical devices. We go beyond standard inspection, embedding quality into every bend, cut, and joint through engineering rigor and relentless process control. From surgical assemblies to aerospace tubing, our precision doesn’t just pass inspection — it passes scrutiny.

QUALITY

Better inputs.
Smarter process.
‍Repeatable results.

Quality doesn’t begin at the final check — it starts with alignment. At Zeman, we engineer quality from the ground up with a process built on transparency, consistency, and control. We don’t chase defects — we prevent them.

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OUR PROCESS

Every tube. Every step. Every time.

Client

First Piece Approval

Before any job is released to production, we inspect and document the first completed part to verify:

• Dimensional accuracy
• Material compliance
• Surface condition
• Bend angles and critical geometry
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Only after this part is approved do we release the job into production.
Client

In-Process Inspection

Our operators inspect parts throughout the run to catch issues early and reduce variation. This includes:
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• Spot checks using micrometers, calipers, and go/no-go gauges
• Visual inspection for burrs, scratches, and surface flaws
• Confirming lot separation and correct material use
• Inspection intervals tailored to part complexity and volume

In-process inspection ensures consistent results and builds quality into the workflow — not just the final result.

Client

Final Inspection

Before any parts are packed and shipped, we run a final quality gate that includes:

• Dimensional confirmation of critical features
• Visual finish check
• Surface and burr validation
• Review of all required documentation, labels, and certifications

Nothing ships without passing this final gate.
Client

TubeInspect 3D Scanning

When it comes to bent tube geometry, nothing is more accurate or efficient than our AICON TubeInspect P16 system. This non-contact scanner compares the finished part against the 3D model in seconds, checking:

• Bend angles and radii
• End-to-end length
• Hole or slot positions
• Flatness and symmetry

It’s the gold standard for complex bent parts and provides full digital traceability.
Client

Comparator & Hand Tool Inspection

For parts that include formed ends, punched features, or complex profiles, we use an optical comparator (Fowler Baty R400) to project and inspect:

• Cut profiles
• Endform shapes
• Punch alignment and geometry
• Part-to-print overlay validation

Comparators allow us to see and measure what basic tools can’t — especially for high-detail components and medical geometry.
Client

Special Testing (as required)

We offer a range of advanced testing options for critical assemblies:

• Pressure Testing: For components handling gases or fluids under load
• Leak Testing: For enclosed tube assemblies
• Non-Destructive Testing (NDT): For weld validation or material integrity
• Custom Gauging: Designed to spec for unique assemblies or interfaces

These services are available per part spec, customer request, or industry requirement.
CREDENTIALS

Certifications & compliance.

✓ ISO 9001:2015
✓ ISO 13485:2016
✓ ITAR Registered
✓ RoHS & REACH Compliant
✓ Full Country-of-Origin Documentation

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TOLERANCES

Why are tube bending tolerances different from machining tolerances?

What causes variation in a bent tube’s dimensions?
How does Zeman hold tighter tolerances than others?
How does tighter tolerance improve my operation?
How does better tolerance control reduce my costs?
Why does Zeman revise my end-to-end tolerances?
Why don’t machining tolerances apply to bent tubing?
Explore Applications
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Industry

Aerospace

Aerospace tubing capabilities include precision forming, coiling, and machining to produce high-performance components like heat exchangers, sensors, cooling coils, and conduits.

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Industry

Agriculture

Agriculture tubing capabilities include forming, welding, and cutting to produce durable components like equipment frames, fluid transfer tubes, and protective conduits.

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Industry

Architecture

Architecture tubing capabilities include bending, forming, and finishing to produce structural and aesthetic components like tube frames, tubular frames, and conduits.

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Industry

Automotive

Automotive tubing capabilities include bending, forming, and cutting to produce reliable components like seat frames, fluid lines, and structural supports.

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Industry

Defense

Defense industry tubing capabilities include precision forming and fabrication for rugged components like heat exchangers and protective conduits.

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Industry

Electrical

Zeman Manufacturing supplies dependable, low-resistance electrical connectors—shoulder protectors, McSockets, crimps, raceways, ferrules—for demanding, complex modern power systems.

Ready for quality that builds confidence? Let's discuss your prints.

At Zeman, we don’t just meet spec — we aim for nominal, because precision parts make your process easier, faster, and more reliable. When you’re ready for a partner who brings accountability to every bend, we’re here.

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