Brass Round Tube Pipe Hollow 2 2.5 3 3.5 4 4.5 5 6mm~10mm Many Sizes and Lengths

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Description

Brass Round Tube Pipe — Precision Hollow Tubing for DIY, Modelling & Fabrication

When a project demands exact dimensions and a material that machines cleanly, generic tubing falls short. Makers, hobbyists, and small-batch fabricators who need repeatable, tight-tolerance hollow sections rely on brass round tube pipe to get the job done right the first time.

Each piece is a seamless brass round tube with a consistent 0.3 mm wall thickness. Outer diameters span 1.5 mm to 10 mm (approximately 0.06 in to 0.39 in), and lengths run from 5 mm to 21 mm (approximately 0.20 in to 0.83 in), giving you over 250 size combinations to choose from in a single listing.

Typical applications include RC model structural spars and axle sleeves, jewellery and watchmaking spacers, electronics chassis standoffs, architectural scale models, and custom pen or stylus bodies — anywhere a small-diameter brass hollow round tube pipe with a known wall thickness is needed for a precision fit.

📐 Select your outer diameter, wall thickness, and length from the variant dropdown. All dimensions are metric. Inner diameter = OD − (2 × 0.3 mm wall).

✅ Key Features of These Brass Round Tube Pipes

  • 🔩 Consistent 0.3 mm wall thickness — uniform across the entire range, so inner diameter is always OD minus 0.6 mm, making calculations straightforward.
  • 📏 250+ size combinations — OD from 1.5 mm to 10 mm in 0.5 mm steps, lengths from 5 mm to 21 mm, covering the most common small-tube requirements in a single source.
  • ⚙️ Machinable brass alloy — cuts, files, and solders cleanly without burring; compatible with standard hobby and workshop tooling including jeweller's saws and rotary tools.
  • 🛡️ Corrosion-resistant surface — brass naturally resists oxidation in typical indoor and light-outdoor environments, reducing the need for additional protective coatings on finished assemblies.
  • 🎯 Tight dimensional tolerance — outer diameter held to close tolerances suitable for slip-fit and light press-fit applications in scale modelling, jewellery, and instrument work.
  • 📦 Sold individually per piece — order exactly the quantity you need; no minimum bundle required, keeping project costs lean for prototyping and one-off builds.

📐 Technical Specifications — Brass Round Tube Pipe

Material Brass (copper-zinc alloy)
Form Round hollow tube / pipe
Outer Diameter (OD) Range 1.5 mm – 10 mm (≈ 0.06 in – 0.39 in)
Wall Thickness 0.3 mm (uniform across all sizes)
Inner Diameter (ID) OD − 0.6 mm (e.g., 5 mm OD → 4.4 mm ID)
Length Range 5 mm – 21 mm (≈ 0.20 in – 0.83 in)
Available Lengths 5, 6, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21 mm
Surface Finish See variant options
Quantity per Order 1 piece per variant selected
Weight (per piece) See variant options

❓ Frequently Asked Questions

How do I calculate the inner diameter for a specific variant?

The wall thickness is a consistent 0.3 mm on all sizes. Inner diameter = Outer Diameter − (2 × 0.3 mm) = OD − 0.6 mm. For example, a 6 mm OD tube has an inner diameter of 5.4 mm. This formula applies to every size in the range.

Can these tubes be cut to a shorter length?

Yes. Brass cuts cleanly with a fine-tooth hobby saw, a rotary cut-off wheel, or a pipe cutter sized for small-diameter tubing. Deburr the cut end with a round needle file or a countersink bit to maintain a clean bore. The 0.3 mm wall is thin enough that minimal force is needed.

Will these tubes corrode or tarnish over time?

Brass develops a natural patina when exposed to air and moisture over time, which some builders find desirable. For applications where a bright finish must be maintained, apply a thin coat of clear lacquer or Renaissance Wax after assembly. In dry indoor environments, bare brass typically remains stable for years without treatment.

Are these suitable for use as axle sleeves or bushings in RC models?

Yes, small-diameter brass tube is a common choice for RC axle sleeves, pivot bushings, and structural spars. Select an OD that matches your chassis bore and an ID (OD − 0.6 mm) that gives the desired clearance around your axle wire or rod. The 0.3 mm wall provides adequate strength for typical 1:10 to 1:24 scale applications.

Can I solder or braze these tubes to other brass or copper components?

Brass solders and brazes readily with standard silver solder, soft solder (60/40 or lead-free), and common flux. Clean the joint area with fine abrasive paper before applying flux to ensure a strong bond. The thin 0.3 mm wall heats quickly, so use a low-heat iron or a small torch and work efficiently to avoid distortion.

How do I choose between different outer diameters for a press-fit or slip-fit application?

For a slip fit, choose an OD that is 0.05–0.1 mm smaller than the bore it must slide into. For a light press fit, match the OD as closely as possible to the bore diameter — brass compresses slightly and will seat firmly without adhesive in many materials including acrylic, wood, and soft aluminium. Always measure your bore with calipers before ordering.

Is one piece included per order, or is it a pack?

Each variant represents one individual tube. If you need multiple pieces of the same size, simply increase the quantity in the cart before adding to your order. There is no minimum order quantity, making it easy to order exactly what your project requires.

🛒 Select your size (Outer Diameter × Wall Thickness × Length) above, then add to cart.

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