Tube Expander MandrelsKnight Carbide offers a full range of metal cutting and forming tools that can make your life easier. From tubing cutoffs to threading and grooving, scarfing, and more, our team not only offers the expertise to do the work, we also make superior tools with which to do it. Tools like our custom carbide tube expander mandrels. 

Used in applications where precision, durability, and reliability are essential, such as in HVAC systems, heat exchangers, and automotive air conditioning systems, Knight Carbide’s tube expander mandrels can widen the diameter of a copper tubing segment so it can be securely slipped over the end of another, forming a continuous tube made up of multiple joined segments. This method is excellent for creating the cooling coils for air conditioning systems.

The excellent thermal conductivity of copper makes it a natural choice for cooling tubes. Knight’s carbide mandrels offer multiple advantages over those made from steel or other materials. Carbide tools maintain their shape and deliver dimensional accuracy over longer runs with extended tool life and greater precision. 

Go custom 

Knight’s custom tooling expertise ensures you get the most effective tube expander mandrels for your application, designed and built to your exacting specifications. With custom design and the beneficial properties of carbide, the mandrels you receive from Knight Carbide will deliver enduring, consistently high performance with minimal breakage. As a Knight Carbide customer, you stand to benefit greatly from our signature customer service, with attentive care from start to finish, and even beyond. 

This is Knight Carbide

Whether producing standard cutting tool inserts or custom tools, Knight’s goal remains the same: to bring our customers high-quality, cost-effective tooling solutions that help maximize productivity, profitability, and success. 

To that end, Knight functions as a one-stop supplier for high-precision tools used across multiple industries. In our 24,000-square-foot state-of-the-art CNC facility in Michigan, our machine shop is built and operated to ISO 9001:2000 standards. We maintain an impressive inventory of standard cutting tool inserts and possess the capacity to produce blueprint specials to exact specifications, with quick turnaround and competitive pricing.

More than 50 years after our founding, Knight Carbide maintains its place as a leader in precision tooling, fueled by a culture of innovation inspired by technology. In a field that prizes precision, dependability and efficiency above all else, Knight Carbide has kept its competitive edge by continually investing in leading technology and the ongoing training that keeps our highly skilled workforce at the top of their game. 

We value our reputation for producing world-class carbide tools for industries ranging from medical devices to automotive and aerospace. Knight’s commitment to excellence and customer satisfaction are continually validated by the loyalty and success of our valued clientele.