Custom Weldments and Welded Assemblies

Complete welded assemblies — frames, chassis, skids, enclosures and structures — cut, formed, welded and machined under one roof in Fontana, California.

Weldment capability

Typical assembliesFrames, chassis, skids, enclosures, structures
Welding processesTIG and MIG
Upstream in-houseTube laser, plate laser, press brake, CNC machining
VolumePrototype through production
Post-weld machining3, 4 and 5-axis, in-house
Quality systemAS9100D and ISO 9001 certified

A weldment is where every other department's work either pays off or falls apart. Because the tube laser and plate laser cut the parts, the press brake forms them and the welders assemble them in the same building, a frame that does not fit gets solved on the floor the same day instead of becoming a three-vendor argument.

The parts arrive at the weld bay already carrying keys, tabs and etched part numbers cut into them. Assemblies locate themselves, which means less fixturing, less measuring off a print, and far fewer mistakes on long or complex structures.

We build frames, chassis, skids, enclosures and structural weldments from prototype through production, and we can machine critical features after welding rather than fighting distortion beforehand.

Before you send a file

Get a quote on weldments

Send the assembly model and we will quote cutting, forming, welding and machining as one job.

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© 2026 CalWest MFG. All rights reserved.

Contact Info:

(909) 351-0081

13815 Arrow Rte

Fontana, CA 92335

sales@calwestmfg.com