320.253.2699 sales@c4weld.com

Specialists in precision welding, manufacturing engineering, and large part contract machining.

C4 Provides “Whatever it Takes

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Complex ManufacturingComprehensive Solutions

C4 Welder working on large structure

When certified precision is non-negotiable — when exact specifications must be absolutely achieved or exceeded — these are the complex manufacturing challenges C4 Welding solves every day.

C4 Welding, Inc., offers critical welding, manufacturing engineering, mechanical design, assembly, OEM manufacturing, and in-house fabrication services for specialized customer projects. We are home to a team of highly-experienced certified welders, weld inspectors, assemblers, and machinists. Our industrial roots extend back to our founding 35 years ago. Along the way, we have become nationally recognized as a leader in critical welding and fabrication services.

Specialty & Critical Welding

Engineering & Manufacturing

Industries We Serve

“I can’t tell you enough how great it is to be able to work with a team that can accurately coordinate everything with the right people and the right tools, and the right plan to get it all done.”

Oil and Gas Industry Customer

C4 anticipates the challenges of my project and comes back with thoughtful, realistic appraisals of exactly what needs to be done.”

Power Gen Customer

“Working with a company like C4 that has not only technical talent but the confidence in what that talent can do went a long way in engineering our project’s complete success.”

US Military Procurement Officer

New Job Position – Document Control/Marketing Coordinator

Position Summary: This position performs a variety of duties that include administration of C4 Welding’s documented quality system, marketing strategies, website, and miscellaneous accounting functions. Position Responsibilities:      Assist in the organization and...

C4 is proud to announce acquisition of large mill programmers/machinists for our new 5-Face SNK Mill

Increased customer demand for larger and larger welded and machined structures led C4 to bring world-class large part machining capabilities to its shop floor with the purchase of a SNK RB6M Multi-Center (Youtube link). The machine is being assembled in...

C4 Answers Growing Need for In-House Large Part Machining by Inking Deal for New 5-Face SNK Mill

With increased customer demand for larger and larger welded and machined structures, C4 has decided to bring world-class large part machining capabilities to its shop floor with the purchase of a SNK RB6M Multi Center (Youtube link). The machine is...

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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

ISO 9001:2015 Certified Quality Systems