Metal Fabrication & CNC Machining Service Areas
- 40+ Years In Business
- AS9100D Certified
- ISO 9001:2015 Certified
- Serving OEMs Across Southern California
- AS9100D & ISO 9001:2015 Certified
- Fabrication, Machining & Finishing In-House
- Prototype to Full-Scale Production
Pen Manufacturing provides custom metal fabrication, CNC machining, sheet metal fabrication, and welding services from its Anaheim, CA facility, serving OEMs, engineers, and procurement teams throughout Southern California. Each location below is a service area, not a separate facility. Every city is served from our Anaheim, CA facility with the same capabilities, materials, certifications, and quote process. Each page leads with the questions buyers in that area ask most. Find your city below for details, or read on for what stays consistent everywhere Pen Manufacturing ships.
The eight locations below are Pen Manufacturing's most requested service areas, not a strict boundary. If your city isn't shown, reach out anyway. Pen Manufacturing serves OEMs throughout Southern California and the wider United States.
Locations We Serve
Every service area has access to Pen Manufacturing’s full range of capabilities: CNC machining, sheet metal fabrication, welding, metal fabrication, finishing, and assembly. Every service is available in every service area. Each city page leads with the service buyers in that area search for most, but none limits you to a single capability.
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Anaheim, CA
Pen Manufacturing's manufacturing facility, where all fabrication, machining, welding, finishing, and assembly for every service area below takes place.
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Orange County, CA
Metal fabrication and CNC machining backed by decades of combined shop experience.
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Santa Ana, CA
Served from our Anaheim facility: custom welding, metal fabrication, CNC machining, sheet metal, finishing, and assembly for Santa Ana OEMs.
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Irvine, CA
Served from our Anaheim facility: precision CNC machining with prototype-to-production support, plus sheet metal, welding, finishing, and assembly for Irvine engineering teams.
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Los Angeles, CA
Served from our Anaheim facility: sheet metal fabrication, CNC machining, welding, finishing, and assembly for Los Angeles OEMs.
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San Diego, CA
Metal fabrication and precision CNC machining serving San Diego OEMs.
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Riverside County, CA
Metal fabrication and CNC machining serving Riverside County and the Inland Empire.
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Long Beach, CA
Served from our Anaheim facility: metal fabrication, CNC machining, sheet metal, welding, finishing, and assembly for Long Beach OEMs.
One Facility, Consistent Standards Everywhere
Every service area is supported by the same Anaheim facility: AS9100D and ISO 9001 certified, ITAR registered, with more than 40 years in business and a team of degreed engineers. The same quality standards apply to every project. Pen Manufacturing supports industries including aerospace and defense, medical devices, electronics, industrial equipment, wastewater treatment, and transportation across every location listed, rather than limiting specific capabilities to a single city.
Requesting a quote works the same way regardless of location: submit drawings, material specifications, tolerances, and quantities, and Pen Manufacturing's engineering team reviews the submission before confirming feasibility. Lead time depends on part complexity, quantity, and whether outside processing is required. Prototype and short-run parts can sometimes be completed in 2 to 3 days; scheduled production typically takes 4 to 6 weeks.
If your area is not listed above, please don't hesitate to contact us. Pen Manufacturing supports OEMs throughout Southern California and across the United States, so a city missing from this list doesn't mean it's outside the service area.