Aluminium Round Tubes

Aluminium round tubes offer versatility for a wide range of applications, from lightweight projects to more demanding fabrication work. At 1st Choice Metals, we stock aluminium round tubes in a wide range of outside diameters and wall thicknesses for trade, engineering, fabrication and domestic projects.

Our tubes are available in 6063T6 and 6082T6 aluminium, depending on the selected size and current stock. Choose from metric and imperial sizes and order the length required through our free cutting service. One free cut is available per line item, with UK delivery starting from £3.95 plus VAT.

These seamless extruded tubes are suitable for anodising, powder coating and polishing. If the size or grade you require is not listed, contact our team to discuss availability.

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Showing 1–25 of 64 results

Trade Account

Credit accounts & discounts area available. Simply get in tocuh and speak to us directly.

Free Cutting Service

1 x Free Cut - per line item purchased - receive the item at the exact length required for the job

Folding Service

We are able to offer our Aluminium Sheets & Chequer Plates and Stainless Steel Sheets folded to the customers specifications

We accept all types of credit and debit cards.

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Aluminium Round Tube Grades

  1. 6063T6

    • Ideal for lightweight applications such as signposts, decorative features, and general fabrication.

    • Excellent for bending, forming, and swaging.

  2. 6082T6

    • A stronger, harder grade perfect for structural applications.

    • Best suited for machining, drilling, threading, and heavy-duty use.

The grade supplied can vary between tube sizes and stock batches. If a specific grade, specification or material certificate is important, please contact us before ordering. You can also find more information in our aluminium grades guide.

Our Services

  1. Free Cutting Service
    We offer free cutting on all our aluminium round tubes — one free cut per line item. Custom cuts are available to meet your specific project requirements.
    Our standard cutting tolerance is ±2mm, but please be sure to contact us should greater precision be required. The saw blade normally removes approximately 5mm of material during each cut, which is shown as cut waste or kerf in the cutting tool.
    Items cut to bespoke dimensions cannot normally be returned, so check your measurements carefully before ordering. Read more about our cutting service and delivery and returns terms.

  2. Trade Accounts

    Trade discounts and credit accounts are available for regular customers. Contact us directly to discuss setting up a trade account or placing a larger order.

    Custom and Bulk Orders

  3. If you need a size that is not listed or wish to place a large order, contact us for a quotation.

Contact Us for Custom Orders

If you need a custom size or have a large order, contact us today. Our team is happy to provide you with a quote or discuss your specific requirements.

Imperial Size

(Outside Dia x Wall Thickness)

 Metric Conversion

(Outside Dia x Wall Thickness)

 Nominal Internal

Bore Size
5/16” x 20swg 7.98mm x 0.9mm 6.18mm
3/8” x 16swg 9.53mm x 1.63mm 6.27mm
½” x 16swg 12.7mm x 1.63mm 9.44mm
½” x 10swg 12.7mm x 3.25mm 6.2mm
5/8” x 18swg 15.88mm x 1.2mm 13.48mm
5/8” x 16swg 15.88mm x 1.63mm 12.62mm
5/8” x 10swg 15.88mm x 3.25mm 9.38mm
¾” x 18swg 19.05mm x 1.2mm 16.65mm
¾” x 16swg 19.05mm x 1.63mm 15.79mm
¾” x 10swg 19.05mm x 3.25mm 12.55mm
7/8” x 18swg 22.2mm x 1.2mm 19.8mm
7/8” x 16swg 22.2mm x 1.63mm 18.94mm
7/8” x 10swg 22.2mm x 3.25mm 15.7mm
1” x 18swg 25.4mm x 1.2mm 23mm
1” x 16swg 25.4mm x 1.63mm 22.14mm
1” x 10swg 25.4mm x 3.25mm 18.9mm
1.1/8” x 16swg 28.58mm x 1.63mm 25.32mm
1.1/8” x 10swg 28.58mm x 3.25mm 22.08mm
1.1/4” x 16swg 31.75mm x 1.63mm 28.49mm
1.1/4” x 10swg 31.75mm x 3.25mm 25.25mm
1.1/2” x 16swg 38.1mm x 1.63mm 34.84mm
1.1/2” x 10swg 38.1mm x 3.25mm 31.6mm
1.3/4” x 16swg 44.45mm x 1.63mm 41.19mm
1.3/4” x 10swg 44.45mm x 3.25mm 37.95mm
2” x 16swg 50.8mm x 1.63mm 47.54mm
2” x 10swg 50.8mm x 3.25mm 44.3mm
2.1/4” x 16swg 57.15mm x 1.63mm 53.89mm
2.1/4” x 10swg 57.15mm x 3.25mm 50.65mm
2.1/2” x 16swg 63.5mm x 1.63mm 60.24mm
2.1/2” x 10swg 63.5mm x 3.25mm 57mm
3” x 16swg 76.2mm x 1.63mm 72.94mm
3” x 10swg 76.2mm x 3.25mm 69.7mm
4” x 16swg 101.6mm x 1.63mm 98.34mm
4” x 10swg 101.6mm x 3.25mm 95.1mm
6.1/2” x ¾” 165.1mm x 19.05mm 127mm

Manufacturing Tolerances:
Please be aware that extruded aluminium tubes are not precision tubes. They are subject to the relevant manufacturing tolerances for both outside diameter and wall thickness.
Variations in either measurement can affect the actual internal bore of the tube. Contact us before ordering if a particular outside diameter, internal bore or dimensional tolerance is essential for your project.

Telescopic Tube Information:                                                                                                        We are often asked whether our aluminium tubes can fit inside or over one another. The following tube sizes can provide a sliding fit:

  • 8mm OD × 1mm tube fits inside ½” OD × 16swg tube
  • ½” OD × 16swg tube fits inside ⅝” OD × 18swg tube
  • ⅝” OD × 18swg tube fits inside ¾” OD × 18swg tube
  • ¾” OD × 18swg tube fits inside ⅞” OD × 18swg tube
  • ⅞” OD x 18swg tube fits inside 1” OD x 18swg tube.

Common Applications for Aluminium Round Tubes

Due to its versatility, aluminium round tubes are used in many applications, including:

  • Poles: Often seen in signposts and road signs.

  • DJ Speaker Poles: Popular in the audio industry.

  • Flag Poles: A common use for aluminium tubes.

  • Lighting Rigs: Found in theatres, arenas, and nightclubs.

  • Amateur Radio: Used by radio enthusiasts for mounting aerials.

  • Automotive Industry: Includes applications like handlebars (7/8” tube size for motorbikes), intake pipes, coolant pipes, and air conditioning systems.

  • Compressed Air Systems: Used as pipework in these systems.

  • Silencers for Guns: Manufactured from aluminium tubes.

We also offer plastic end caps to suit several of our aluminium round tubes — click here to view.

FAQ

  1. What is the difference between 6063T6 and 6082T6 aluminium round tubes?
    6063T6 generally offers good workability and surface finish, making it suitable for decorative and general fabrication. 6082T6 is stronger and better suited to machining and more demanding applications. Confirm the stocked grade before ordering when the specification is important.

  2. Can aluminium round tube be cut to length?                                                    Yes. Select the required length and enter your cut dimensions on the product page. One cut is included free per line item, with additional cuts available through the cutting tool. The standard cutting tolerance is ±2mm, but please be sure to contact us should greater precision be required.

  3. How is aluminium round tube measured?                                                      Aluminium round tube is measured by its outside diameter and wall thickness. The approximate internal bore is calculated by subtracting twice the wall thickness from the outside diameter.

  4. Can aluminium round tubes fit inside one another?                              Certain tube sizes can fit inside one another, but the clearance depends on their outside diameters, wall thicknesses and manufacturing tolerances. Use the telescoping guidance above as a starting point and confirm critical fits before ordering.

  5. Are plastic end caps available for aluminium round tubes?                      Yes. Plastic end caps are available for selected imperial tube sizes. Check the stated tube size and wall-thickness compatibility before ordering.