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Silver 6063 aluminum tube 18mm OD 5mm ID 300mm long

Unique-Bargains

Unique-Bargains 6063 Aluminum Round Tube 18mm OD 5mm ID 300mm Seamless

SKU CH-W8CX-VY3SQ

Seamless 6063 aluminum tube with 18 mm outer diameter, 5 mm inner diameter and 300 mm length for custom fabrication

  • 6063 alloy gives high strength and corrosion resistance
  • Seamless bore provides smooth interior flow path
  • 18 mm OD and 5 mm ID suit precision fabrication
  • 300 mm length can be cut or welded to size
  • Used in automotive, marine, aerospace and DIY projects

Precision Aluminium Tubing

This 6063 aluminium round tube has an 18 mm outer diameter and a 5 mm inner diameter. The 300 mm length is supplied in a seamless finish for smooth internal flow. It is suited to fabricators who need a lightweight, corrosion-resistant structural element.

Makers and Light Fabrication

Hobbyists building custom air intakes, frames or marine fittings will find the material easy to weld and machine. Builders who require longer continuous runs or larger bore sizes should look at alternative stock lengths or diameters.

Capacity and Limits

The 5 mm bore handles fluid or air transfer in small-scale systems, while the 18 mm wall provides structural rigidity for frames up to 300 mm. Projects needing greater flow volume or extended spans will exceed the practical capacity of this single piece.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 85% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

What tube-cutting or welding gear do I need to process this 6063 aluminum tube to length?

A standard metal-cutting saw or pipe cutter handles the 300 mm length; any TIG or MIG setup suitable for 6063 alloy can weld the 18 mm OD tube.

Will this 18 mm OD tube fit inside the 20 mm bore fittings I already use?

The 18 mm outer diameter leaves roughly 2 mm clearance in a 20 mm bore, so it slides in but may need shims or adhesive for a tight seal.

How can I verify the tube is truly seamless after I receive it?

Inspect the full 300 mm length under bright light — no weld line should appear — and run a bore gauge through the 5 mm ID to confirm a uniform, seam-free interior.

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