Large-Format Metal Fabrication for Mission-Critical Systems
Weldmac Manufacturing Company, part of PennAero Aerospace, delivers complex formed and welded metal assemblies for aerospace, defense, space launch, and power-generation applications. Since 1968, Weldmac has combined heavy forming, CNC machining, advanced welding, and laser processing to solve large-scale fabrication challenges with repeatable precision
Our Products
A Look Inside Weldmac
Weldmac supports more than 100 customers and over 1,500 active custom job orders. Operating from approximately 110,000 sq. ft. of dedicated manufacturing space in El Cajon, California, Weldmac integrates forming, machining, welding, laser cutting, and assembly under one roof.
Our commitment to quality oversight extends beyond inspection — from purchase order through first article approval — with engineering, procurement, and production aligned to ensure repeatable, mission-ready hardware.
Built for the Demands of Flight and Launch
Weldmac hardware supports airframes, propulsion systems, military platforms, and launch vehicles. From prototype to production, Weldmac delivers rugged assemblies engineered to perform in extreme environments.
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