All of Your Tubing Needs from a Single Source K-Tube Products

K-Tube Specializes in Stainless Steel and Fiber Optic Filled Tubing

We offer a variety of stock and custom sizes, metal alloys, ID and OD surface finishes, mechanical properties, and cut-to-length options.

But we’re more than manufacturers. We understand the metals we use and how our design and production affects how they perform in their final state. We have trained metallurgists, engineers, and quality specialists on staff to help you plan for the entire life cycle of your products.

That means you don’t have to worry about dealing with multiple suppliers or something getting lost in translation between different vendors.


K-Tube uses a proprietary process of laser welding to manufacture tubing. Laser-welded tubing is cleaner, contains no filler materials, and results in a smoother finish. These characteristics make laser-welded tubing a top choice among design engineers.



Type 304/304L stainless steel, with its chromium-nickel content, is the most versatile and widely used of the austenitic stainless steels.
Learn More >>



Type 316/316L stainless steel, with its chromium-nickel and low carbon content, is a commonly used austenitic stainless steel.
Learn More >>


17-7 PH®

17-7 PH® is a precipitation hardened (PH) stainless steel. It has the same easy-to-work characteristics of the 300 series alloys, yet it is capable of being hardened by a simple heat treatment.
*17-7 PH is a registered trademark of AK Steel Corporation.
Learn More >>



Inconel® 625 stainless steel, with a chromium-nickel and low carbon content, is used for its outstanding corrosion resistance, especially at elevated temperatures.
*Inconel is a registered trademark of Huntington Alloys Corporation.
Learn More >>



MP35N® Alloy, with its nickel-cobalt-chromium-molybdenum content, has a special combination of high strength, ductility and corrosion resistance.
*MP35N is a registered trademark of SPS Technologies, LLC.
Learn More >>

Fiber Optics

K-Tube developed and introduced laser-welded fiber optic tubing to the industry almost 30 years ago. Today, K-Tube’s dedicated technical team is actively growing and supporting fiber optic cable markets ranging from land to underwater communications and the oil and gas industry.
Learn More >>

Not Sure Where to Start?

Contact one of our experts to learn how we can fulfill all your tubing needs. From collaborating with our engineers to developing new raw materials to fulfill your purchase orders, our experts are standing by and ready to assist.

Our Response To COVID-19

Click below to learn more about our response to COVID-19.