Brass Round Tube — OD 6mm to 45mm, 2mm Wall Thickness, 500mm Length

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Sale price$42.64 USD
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In stock (500 units), ready to be shipped

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Description

Brass Round Tube — Precise Hollow Tubing for DIY, Craft & Engineering Projects

Finding a brass round tube in exactly the right diameter shouldn't mean sifting through bulk industrial catalogs. Whether you're a hobbyist building a model, a tradesperson fabricating a custom fitting, or a maker working on a furniture or lamp project, having the right hollow brass tube on hand makes all the difference. This listing offers 31 carefully sized variants so you can match the exact OD and ID your project demands.

Each tube is machined from solid brass stock and measures 500mm (≈19.7") in length with a fixed 2mm wall thickness. Outer diameters range from 6mm (≈1/4") to 45mm (≈1-3/4"), with inner diameters always equal to OD minus 4mm — for example, the 10mm OD variant has a 6mm ID, and the 25mm OD variant has a 21mm ID. All sizes are sold individually per piece.

Typical use cases include decorative railing inserts and balusters, model engineering and scale fabrication, custom lamp and furniture hardware, fluid-line prototyping, and sleeve bushings for light mechanical assemblies — all applications where a metric brass hollow tube with consistent wall thickness is essential.

ℹ️ Sizing note: Wall thickness is fixed at 2mm across all variants. Inner diameter = OD − 4mm. Select your variant by the OD × ID label (e.g., "10mm × 6mm"). Verify dimensions against your fitting or drawing before ordering.

✅ Key Features of These Brass Round Hollow Tubes

  • 🔩31 Metric Sizes in One Listing — OD range from 6mm to 45mm lets you find the exact metric brass tube size without ordering from multiple suppliers.
  • 📏Consistent 2mm Wall Thickness — Uniform wall across all variants ensures predictable ID calculation and reliable fit in brass tube sleeve and bushing applications.
  • ⚙️Machinable & Solderable — Brass cuts cleanly with a pipe cutter or hacksaw, threads easily, and solders with standard flux — ideal for DIY brass pipe fabrication and custom fittings.
  • 🛡️Natural Corrosion Resistance — Brass resists oxidation and performs well in humid and mildly corrosive environments, making it suitable for both indoor and sheltered outdoor use.
  • 🎨Smooth Exterior Finish — The drawn finish provides a clean, bright surface that accepts polishing, lacquering, or patination for decorative brass tubing craft and model projects.
  • 📦500mm Ready-to-Use Length — At 500mm (≈19.7") per piece, each tube is long enough for most project spans and easy to cut down to shorter sections without waste.

📐 Technical Specifications — Brass Hollow Round Tube

Material Brass (copper-zinc alloy)
Shape Round hollow tube
Outer Diameter (OD) Range 6mm (≈1/4") to 45mm (≈1-3/4")
Wall Thickness 2mm (fixed across all variants)
Inner Diameter (ID) OD − 4mm (e.g., OD 20mm → ID 16mm)
Length 500mm (≈19.7")
Available Sizes (OD × ID) 6×2, 7×3, 8×4, 9×5, 10×6, 11×7, 12×8, 13×9, 14×10, 15×11, 16×12, 17×13, 18×14, 19×15, 20×16, 21×17, 22×18, 23×19, 24×20, 25×21, 26×22, 27×23, 28×24, 29×25, 30×26, 32×28, 35×31, 38×34, 40×36, 42×38, 45×41 (all in mm)
Quantity per Order 1 piece per variant selected
Surface Finish Drawn / bright (uncoated)
Alloy Grade Contact us to confirm
Country of Manufacture China
⚠️ Confirm before ordering: If your application requires a certified alloy grade (e.g., C26000, CW508L) or specific tolerances, please contact us before purchasing. Dimensions shown are nominal; actual tolerances follow standard drawn-tube manufacturing ranges.

❓ Frequently Asked Questions

How do I choose the right brass tube size?

Measure the outer diameter (OD) of the space or fitting you need to fill, then subtract twice the wall thickness (2mm) to get the inner diameter (ID). For example, if you need an ID of 6mm, select the 8mm × 4mm variant. All variants in this listing have a fixed 2mm wall thickness, so the formula is always: ID = OD − 4mm.

What is the inner diameter (ID) for each size?

Because wall thickness is fixed at 2mm, the ID is always OD minus 4mm. A few examples: OD 10mm → ID 6mm (≈0.24"); OD 20mm → ID 16mm (≈0.63"); OD 40mm → ID 36mm (≈1.42"). Each variant label in the size selector shows both OD and ID clearly.

How strong is a 2mm wall brass tube?

A 2mm wall brass tube is generally suitable for light-to-medium structural, decorative, and fluid-carrying applications. Exact load capacity depends on the OD, alloy grade, and how the tube is supported. For high-pressure or heavy structural use, we recommend consulting a mechanical engineer and specifying a certified alloy grade.

Can this brass tube be used outdoors?

Brass has naturally good corrosion resistance and performs well in most outdoor environments. In highly saline coastal areas or acidic conditions, a clear lacquer or protective coating is generally recommended to extend service life and maintain appearance.

Is this tube compatible with standard plumbing or compression fittings?

These tubes use metric OD dimensions. In most cases, metric compression fittings rated for the matching OD will fit. Always verify the OD and wall thickness against your fitting specifications before ordering, as fitting tolerances vary by brand and standard (e.g., DIN, BS, or JIS).

Can I cut, solder, or thread this brass tube?

Yes. Brass is easy to cut with a pipe cutter, hacksaw, or milling machine. It solders and brazes readily with standard flux and solder, and can be threaded, drilled, and bent with appropriate tooling. The 2mm wall provides enough material for light threading on larger OD variants.

What alloy grade is this brass tube?

The tubes are made from standard brass alloy (typically a copper-zinc composition). A specific certified alloy grade (e.g., C26000 / CW508L) is not confirmed for this listing. If you require a certified grade for engineering or compliance purposes, please contact us before ordering.

Can I order a custom length other than 500mm?

Each tube in this listing is 500mm (≈19.7") long. Custom lengths are not available through this listing. If you need a different length, contact us before ordering and we will advise on availability.

🛒 Select your size (OD × ID) above, then add to cart — ships from our US warehouse.

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