320.253.2699 sales@c4weld.com

US Military

We Weld and Manufacture to US Military Specifications

Manufacturing for military and government projects is always complex in scope, stringent in process and critical in performance. C4 has decades of experience assisting many government agencies and all branches of service. This depth of knowledge allows us to accelerate through early stages and get projects underway as quickly as possible. It also provides us with a more confident ability to bid each project with greater accuracy.

Have a look at our image gallery to view recent projects. For a more in-depth discussion of our history with military manufacturing, call us today at 320-253-2699.

ISO 9001:2015 Certified Quality Systems

AWS Certified Weld Inspectors

Quality is the highest priority for us. This is demonstrated by having AWS Certified Weld Inspectors (CWI) on staff. The benefits of doing so include the following: the ability to conduct in-process inspections both during welding cycles and at critical control points; and the opportunity to document findings throughout the process. This way, we can provide documentation at any point during the process to validate that the product is being manufactured to the drawings and specifications you provided.  The end result is a proactive, well-managed program that ensures top-quality results, each and every time.

C4 can provide the following tests in-house:

  • Magnetic Particle (MT)
  • Liquid Penetrant (PT)
  • Ultrasonic Test (UT)
  • Visual Test (VT)
  • Functional, Hydro, and Proof Testing



Street Address: 11 Industrial Blvd.

Sauk Rapids, MN 56379 USA


Main Phone: 320.253.2699

Fax: 320.253.4804


Sales-Related Inquiries: 320-253-2699 

Email: sales@c4weld.com


Human Resources-related Inquiries:

320-253-2699 Email: hr@c4weld.com



C4 Welding, Inc. BBB Business Review