Go Back Up

ROUND TUBING 

Round Tubing Overview

CMI's round steel tubing delivers the consistency, quality, and reliability that manufacturers and fabricators depend on. From small-diameter applications to large structural profiles, our extensive inventory and custom manufacturing capabilities ensure you get exactly what you need—when you need it.

Whether you're building recreational vehicles, farm gates, military bunkbeds, or custom trailers, CMI round tubing provides the strength, versatility, and precision your operation demands.

round_tubing_overview

Product Specifications

Available Diameters & Gauges
Diameter (inches) 22GA 20GA 18GA 16GA 15GA 14GA 13GA 12GA 11GA 10GA 9GA 8GA 7GA
0.59 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.625 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.66 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.687 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.706 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.718* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
0.74 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.75 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.8 ● ● ● ● ● ● ● ● ● ● ● ● ●
0.812* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
0.875* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1 ● ● ● ● ● ● ● ● ● ● ● ● ●
1.05 ● ● ● ● ● ● ● ● ● ● ● ● ●
1.125 ● ● ● ● ● ● ● ● ● ● ● ● ●
1.1875* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.250* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.375* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.500* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.625* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.750* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
1.875 ● ● ● ● ● ● ● ● ● ● ● ● ●
2.000* ● ● ● ● ○ ○ ● ● ● ● ● ● ●
2.25 ● ● ● ● ● ● ● ● ● ● ● ● ●
2.375 ● ● ● ● ● ● ● ● ● ● ● ● ●
2.5 ● ● ● ● ● ● ● ● ● ● ● ● ●
3 ● ● ● ● ● ● ● ● ● ● ● ● ●
3.125 ● ● ● ● ● ● ● ● ● ● ● ● ●
3.15 ● ● ● ● ● ● ● ● ● ● ● ● ●

Legend:
● = Available
○ = Available with galvanized re-metallization and acrylic clear coating
*Denotes sizes with enhanced coating options
Note: This is a representative sample. CMI maintains additional sizes and can produce custom dimensions. Contact us for availability.

Material & Finish Options

standard_bare_steel

Bare Steel

Uncoated for welding, painting, or powder coating  

galvanized

Galvanized

Hot-dipped galvanizing for superior corrosion resistance 

acrylic_coated_galvanized

Acrylic-Coated Galvanized

Premium outdoor finish with long-term UV protection 
custom_coatings

Custom Coatings

Discuss your specific coating requirements with our team

steel_fencing

Industries We Serve

  • Recreational Vehicles (RVs) – Frame components, interior structures
  • Trailers & Automotive – Chassis, supports, exhaust systems
  • Agricultural Equipment – Farm gates, fencing posts, equipment frames
  • Military & Government – Bunkbeds, structural components for defense applications
  • Fencing & Gates – Durable, weather-resistant tubing for long-term installations

Value-Added Processing Services

Precision Cutting & Deburring

  • Cut Length Range: 8" to 79"
  • Gauge Range: 22GA to 11GA
  • Smooth, deburred edges ready for immediate use

Double-Ended Notching

  • Specialized equipment for rounds
  • Tube Range:500" - 2.375"
  • Wall Thickness: .028" - .120"
  • Pipe Size Range:500" - 2"
  • Length Capability: 6" - 211"

Punching & Drilling

  • Niagara punch press for custom hole patterns
  • Round holes down to 0.220" diameter
  • End-smashing, slot punching, custom configurations

Tube Bending

  • SOCO CNC electric tube bender (4-axis)
  • Twin-head 90-degree tube bender
  • Custom radius bending for complex assemblies

Welding & Assembly

  • Five weld stations: MIG and TIG capabilities
  • Robotic welding system with SynchroFeed technology for ultra-low spatter
  • Custom fixtures for high-volume production
tube_bending

Why Choose CMI Round Tubing?

square Extensive Diameter Selection  

From small-gauge to large structural profiles 

square Integrated Processing

Cut, bend, notch, punch, and weld—all under one roof 

square Fast Turnaround

Responsive quoting and rapid order fulfillment 

square Custom Stocking Programs

Lock in supply and pricing with tailored inventory solutions

square Proven Reliability

Decades of manufacturing excellence serving diverse industries 

build_to_suit-1

Build to Suit: From Prototype to Production

Whether you need a single prototype or a long-term production partnership, CMI delivers made-to-order round tubing with the flexibility and precision your project demands.

Our build-to-suit capabilities include:

  • Custom diameters and wall thicknesses outside standard specifications
  • Complex bending and forming to match your CAD designs
  • Integrated welding and assembly services
  • Flexible stocking and just-in-time delivery programs

Let's Build Something Together

Get a Fast Quote

Provide your specs, and we'll respond with a detailed, competitive quote within 24 hours. 

Request a Quote

Download Technical Specs

Full diameter charts, weight tables, and material certifications available for download. 

Download PDF

Connect with Our Team

Have questions about custom bending, notching, or volume pricing? Let's discuss your needs. Call 904-274-4957 or contact us.