High Output.
Tight Tolerances.
Proven Precision.
Three generations of copper expertise. From automotive assembly lines to data center innovations—we manufacture what others can't.
What We Build
Spot Welding Electrodes
Premium copper electrodes for automotive assembly and industrial applications. Manufactured to exact specifications for consistent weld quality.
Custom Welding Fixtures
Precision-machined fixtures and tooling for specialized welding operations. Custom designs for unique manufacturing challenges.
Bus Bars
High-conductivity copper bus bars for power distribution. Custom lengths, cross-sections, and connection configurations available.
Precision Bent Gun Arms
Tapered rod bending to exact specifications. We bend what others can't—precision angles on tapered welding arms that meet your print.
Data Center Components
Heat sinks, connectors, and adapters engineered for thermal management. Meeting the demands of next-generation computing.
Custom Copper Manufacturing
If it's made of copper, we can make it. Bring your prints, photos, or ideas. Made right here in the USA.
The ZJ Difference
Family-Owned. American-Made.
Three Generations Deep.
Since 1991, we've been doing things differently. While other manufacturers expanded into warehouses and added layers of management, we stayed lean. We stayed family.
When you work with ZJ, you're not just another transaction. You're sitting down for a cup of coffee with people who genuinely care about solving your manufacturing challenges. Our customers become part of the family.
With over 90 years of combined experience between our team, we've seen it all. From automotive assembly lines to cutting-edge data centers, we adapt, we innovate, and we deliver—every single time.
Our Capabilities
CNC Machining
Multi-axis precision machining for complex copper geometries. Tight tolerances, consistent quality.
Precision Bending
Specialized bending of tapered rods and gun arms. We achieve angles others can't—to your exact print specifications.
Custom Fabrication
From prototype to production. Bring us your drawings, CAD files, or even a photo—we'll make it happen.
Consulting Services
90+ years of combined knowledge at your disposal. Process optimization, material selection, design review.
Quick Turnaround
When you need it fast, we deliver. Mark it urgent—we prioritize your critical timelines.
Quality Assurance
Every part inspected. Every dimension verified. We don't ship anything we wouldn't put our family name on.
Let's Build Something
Whether you need a quote on electrodes, have a custom project in mind, or just want to talk shop—we're here. Family-style service means we actually pick up the phone.
- (630) 543-6655 or (630) 543-6400
- [email protected] (General)
- [email protected] (Corporate Sales)
- Fax: (630) 543-6644
- 125 W. Factory Rd, Addison, IL 60101
