Telescoping Steel Tubing
As an industry leader in electric resistance welded (ERW) steel tubing since 1919, Lock Joint Tube delivers expert-engineered telescopic tubing for the most demanding applications. Whether you’re fabricating adjustable furniture legs, sliding structural components, or prefabricated building framing, our telescopic tubing offers unmatched precision, strength, and versatility.
We also carry steel tubing in rectangle, round, oval, non-symmetrical, & specialty shapes in over 350 different OD’s company-wide. Partner with us to develop the perfect steel tubing for your needs. We're ready to discuss any size, shape, or material based on your unique needs.
What is Telescopic Tubing?
Telescopic tubing consists of two or more concentric steel tubes—an inner and outer profile—that slide smoothly within one another. When extended, it provides adjustable length or collapsible storage; when nested, it delivers compact durability. Lock Joint Tube can manufacture telescopic parts with multiple nesting profiles to fit customer needs, offering an exceptionally wide extension range while maintaining a compact nested profile.
Telescopic Tubing Capabilities
We have 360 ODs in a variety of shapes, including rounds, squares, rectangles, ovals, non-semetrical, and specialty shapes.
Our telescopic tubing comes in the following sizes:
| Round | Square | Rectangle | Oval |
| .605” up to 6.137” | .75 x .75 up to 5.25” | .321” x 1.048” up to 3” x 6” RC | .227” x 1.176” up to 4.650” x 5.694 DOV |
LJT also offers custom shapes including but not limited to hexagons, pentagons, triangles, flat ovals, asymmetric and specialty tubing. Contact our experts today for personalized assistance in choosing the perfect telescopic tubing for your project.
Shapes & Customization
Lock Joint Tube’s telescopic tubing can be tailored to virtually any profile and finish:
- Square Telescopic Tubing
- Ideal for furniture frames, table legs, and support columns that demand clean lines and stable extension.
- Rectangular Telescopic Tubing
- Perfect for prefabricated metal buildings, equipment housings, and adjustable structural members.
- Round Telescopic Tubing
- Smooth, cylindrical profiles for applications such as slide-in posts, adjustable handrails, and scissor-lift guides.
- Oval Telescopic Tubing
- Elliptical sections that combine strength with an ergonomic aesthetic—great for decorative furniture or architectural accents.
- Other Custom Profiles
- From trapezoidal to bespoke polygonal shapes, we’ll work with your CAD drawings to deliver a perfect nesting fit.
All shapes are available in a broad range of steel grades (A500, A513, AR series) and finishes (galvanized, aluminized, painting-quality), so you can match environmental, aesthetic, or performance requirements.
Key Applications
- Furniture Manufacturing: Adjustable table legs, ergonomic chair supports, extension elements for shelving.
- Automotive & Transportation: OEM components such as adjustable seating rails, steering column prototypes, suspension link adjusters, and tow-bar extensions—widely used by leading vehicle-systems suppliers, as well as collapsible bumpers, steering column prototypes, and adjustable assembly fixtures.
- Prefabricated Metal Buildings: Telescopic purlins, bracing members, and sliding panels.
- Material Handling Equipment: Conveyor adjusters, loading dock supports, scissor lift guides.
Have a Question?
Our experts can help
Give us a call at 800-257-6859 or leave us a message.
