We've been utilizing highly trained welders with over 145 YEARS of combined experience to complete project after project. From TIG and MIG to aluminum and stainless steel, we've seen it all. Pen Manufacturing is an AWS D1.1 Structural Steel, AWS D1.2 Aluminum, and AWS D1.6 Stainless Steel certified facility. We know what we're doing.

Pen is committed to providing superior quality machining services in a broad array of sizes, dimensions and shapes. Our success is based upon honesty and integrity and it's evident in our customer service and the end product. High Speed machining, CNC Turning, 4-Axis Machining and a variety of other services allow us to solve the many challenging applications of the industries we serve.

Aluminum, Stainless Steel, Carbon Steel Cast Steel? We provide a complete range of custom metal fabrication solutions to the greater Los Angeles and Orange County, CA areas. As one of the most experienced custom fabricators in California, we don't back down from any job. If you're in the wastewater, air pollution, custom plastics or medical laser industries, you've probably seen some of our work.

We can prototype your complex part as well as produce it in short run (small volume) quantities. Everything is done in-house from the design stage to the CNC machining and manufacturing of your components. Looking for design assistance, engineering assistance or just have a question on the best material for a part? Give us a call because we know the answer.