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Exercise & Fitness Equipment Tube Fabrication

Lock Joint Tube (LJT) has been producing round & square steel tubing for gym equipment for over 30 years and we take pride in the trusted relationships that we have fostered along the way! In fact, our tube is used in 75% of exercise equipment made in the US – we specialize in fitness tube fabrication for cardiovascular machines including but not limited to:

  • Treadmills
  • Ellipitcals
  • Step machines
  • Stationary bikes
  • Strength equipment for agility training
  • Free weight lifting applications
  • Circuit strength training machines

 LJT has been a leader in exercise equipment tube manufacturing since 1985 and would love the opportunity to work with you on your next project.

Contact Us

The LJT Advantage of Steel Tubing for Fitness Equipment:

  • Our tubes result in dependable, safe equipment that is designed to look good
  • Custom shapes: we are currently tooled for many special shapes and have one of the lowest tooling costs in the industry for new shapes.
  • Special chemistry steel is used to meet strength requirements, and then processed in a way to ensure cost competitiveness.  
  • Close tolerance tube (produced at ½ the industry-standard tolerances) ensures that fabrication, welding, assembly are quick, accurate, and consistent.  Controlled ID flash height and location make mandrel bending easy.
  • We specialize in providing the highest quality surface tube, for near-perfect painting and chrome plating
  • In house laser cut features available to give your equipment a unique look or customization
  • Our dedicated sales team has years of experience and stands ready to assist with quotes, JIT deliveries, VMI supply programs
  • To ensure you never have to worry about quality, our on-site metallurgical lab can provide extensive test data along with PPAP’s and ISIR’s

Round & Square Steel Tubing for Gym Equipment

  • Telescope tubes for adjustable height and length or any exercise machine
  • Our specialists can craft tubes for Poka-Yoke assembly, eliminating assembly mistakes and making equipment safer
  • Largest collection of round, square, and rectangular sizes in the industry,
  • Produce many special shapes for exercise equipment and machinery, such as ovals, flat ovals, “D” shaped tubes, a wide range of metric-sized tubes, and special laser cut finished tubes
  • Custom laser cutting options for specialized equipment

Shapes: Round, Square, Rectangle, Ovals (flat and elliptical), D – shapes, and speciality shapes

steel tubing used to build exercise equipment

we can accommodate special & unique requirements

Custom Tubing Solutions for Your Application

Customer Testimonials

“Lock Joint Tube has been instrumental in the growth or our cardiovascular and strength exercise equipment lines.  We rely on them, year after year”.

“Our industry needs to bring new designs to market quickly.  Their engineering assistance and vast tooling selection makes that possible”.

“Lock Joint tube is committed to the success of our industry and supports it with excellent quality, on-time deliveries, competitive price…what more can you ask for”.

Have a Question?
Our experts can help

Give us a call at 800-257-6859 or leave us a message.

Ask a Tubing Expert