Brass Round Tube — OD 5mm to 50mm, 1.5mm Wall Thickness, 500mm Length

Start with the outer diameter (OD) that fits your housing or bore, then confirm the inner diameter (ID) leaves enough clearance for your application. All variants here have a fixed 1.5mm wall, so ID = OD − 3mm. For example, a 10mm OD tube has a 7mm ID. If you need to slide a rod or cable through the tube, measure the rod first and choose the next ID size up to allow for a sliding fit.

Divide millimeters by 25.4 to get inches. Common reference points: 5mm ≈ 3/16", 10mm ≈ 3/8", 12mm ≈ 1/2", 25mm ≈ 1", 50mm ≈ 2". The 500mm length equals approximately 19.7" (just under 20"). Use these when cross-referencing with imperial-spec fittings or drill bits.

Brass tubing with a 1.5mm wall is generally suitable for light-to-medium structural and low-pressure fluid applications. Exact pressure ratings depend on the alloy grade, OD, and operating temperature. For high-pressure hydraulic or pneumatic lines, please contact us to confirm suitability before ordering.

Brass is naturally corrosion-resistant and performs well in most indoor and moderately humid outdoor settings. It is not recommended for direct saltwater immersion or highly acidic conditions without additional protective coating. For marine or coastal applications, a lacquer or sealant finish is typically advisable.

These are plain, unthreaded hollow round tubes. They are compatible with standard compression fittings, push-fit connectors, and soldered joints sized to match the OD you select. For threaded connections, you would need to add a fitting or have the tube end machined. Always check your fitting manufacturer's OD tolerance spec before ordering.

Yes. Brass cuts cleanly with a standard pipe cutter, hacksaw, or lathe. Each tube ships at 500mm (≈19.7") and can be cut to your required length on-site. Deburr the cut end before use to avoid sharp edges and ensure a flush fit against mating surfaces.

The alloy grade is not specified on this listing. If your application involves drinking water or food contact, please contact us to confirm the alloy composition before purchasing, as lead content requirements vary by local code (e.g., NSF/ANSI 61 in the US). In most cases, standard brass is not certified for potable water use without explicit low-lead designation.

For a telescoping fit, you generally want the inner tube's OD to be approximately 0.1–0.3mm smaller than the outer tube's ID. Since all variants here share a 1.5mm wall (ID = OD − 3mm), a common approach is to select two consecutive sizes — for example, a 10mm OD tube (7mm ID) paired with a 6mm OD tube (3mm ID) — and check whether the clearance suits your application. Contact us if you need help matching sizes.