320.253.2699 sales@c4weld.com

C4 Services


Choose C4 Welding & Manufacturing for Your next Project.

From value engineering and critical process controls, to our accredited staff of experts and on-site AWS certified weld inspectors, we are uniquely positioned to support you through every stage of project design, engineering and fabrication.

C4’s original owner focused his business activities on providing high‐precision “critical” welding services. The portfolio of former and current customer projects is a roster of leading companies across many industries.

We deliver value through our broad range of in-house capabilities, state-of-the-art equipment and demonstrated expertise in welding metals ranging from carbon steels to titanium, including an array of exotic materials such as Inconel® alloys; duplex and Nitronic® stainless steels, Stellite® alloys, HY100 and more. Ultimately, we will test and inspect your critical weldments to ensure they are both technically sound and functioning to your exact specifications .

Over the years, C4 has consistently added more and more depth to our solutions , including manufacturing engineering, mechanical design, assembly, OEM manufacturing, and fabrication services. With the purchase of the Company from the original owner in 2013, C4 has accelerated the range of in-house manufacturing and engineering capabilities. In mid‐2018, C4 is significantly expanding our large part machining services with the installation of a large table and travel vertical machining center with full 5-face spindle positioning.


What We Do For You

  • We make YOUR business goals OUR business focus. It’s personal at C4
  • We’re nationally recognized as high‐tolerance, “critical” welding experts
  • We operate from first contact through final delivery with honesty and integrity
  • We have the Can‐Do spirit — we work together with you to provide true peace of mind.

How We Work With You:

  • Each project is handled start to finish by an experienced project manager
  • Each weld is backed by a validated weld procedure to a specific code
  • Each weld is made by a qualified welder to a specific procedure
  • Every component shipped is guaranteed to meet or exceed the customer’s requirements

We are a dynamic company built on a proud heritage and proven record of helping customers succeed. When quality is Critical, Count on C4.

Value Engineering & Manufacturing

We have provided solutions for a diverse array of custom design and build projects. C4 is well-known for rapid completion, personalized service, and unmatched depth of experience.

  • Full project scope through team integration: initial concept, to weld and fabrication, to final finishing
  • Experienced manufacturing engineering staff
  • In-house metalworking fabrication and machining, specialists in large parts/structures
  • Latest testing and inspection technologies and certifications

Specialty, Custom & Critical Welding

Welding is a foundational step in most manufacturing processes. It provides the initial form and shape to what is to be made. Our customers often turn to us to answer exacting manufacturing needs, particularly with large or complex structures. C4 has the skilled people, facilities, and systems required to ensure successful completion.

  • In-house plate metalforming
  • In-house machining, including large part milling and plasma-cutting
  • 800+ sq. ft. stress-relieving furnace
  • Blast & Protective Coatings
  • Sub-Arc Machines
  • Wide assortment of welding equipment supporting:
    GTAW, GTAW-TT, GMAW, FCAW, SMAW, SAW and SW applications
  • Environmentally Controlled Welding Room- clean room
  • QC and Pressure Test equipment
  • Strategic relationships: Radiographic Inspection | Metallurgical Failure & Stress Analysis | Small Part Machining



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