Brass Round Tube 300mm — OD 10–18mm, 3mm Wall Thickness

Measure the bore or socket you need to fit into, then select an OD that matches or is slightly smaller. For sliding fits, the OD should generally be 0.1–0.3mm smaller than the receiving hole. For press fits, the OD is typically 0.01–0.05mm larger. Available sizes in this listing range from 10mm (≈3/8") to 18mm (≈45/64").

Because all variants share a 3mm wall thickness, the inner diameter equals the outer diameter minus 6mm (3mm wall × 2 sides). For example: OD 10mm → ID 4mm | OD 12mm → ID 6mm | OD 14mm → ID 8mm | OD 15mm → ID 9mm | OD 16mm → ID 10mm | OD 18mm → ID 12mm.

Brass alloy generally has a tensile strength of around 340–470 MPa depending on the specific grade. With a 3mm wall, these tubes are typically suitable for light-to-medium structural applications such as bushings, spacers, and support sleeves. For heavy load-bearing or safety-critical applications, consult a mechanical engineer to verify suitability.

Brass is naturally corrosion-resistant and generally performs well in outdoor and humid environments. It is not recommended for prolonged submersion in high-chloride (saltwater) environments without additional protective coating, as dezincification can occur over time. For mild marine exposure — such as deck hardware or outdoor fixtures — brass is typically a reliable choice.

Yes. Brass is one of the most solderable and brazeable metals available. It bonds readily with standard silver solder, lead-free solder, and brazing rods using common flux. Clean the surface with fine abrasive paper or apply flux before joining for best adhesion. This makes it a popular choice for model boiler construction, plumbing repairs, and decorative metalwork.

This is a plain, unthreaded tube. It is compatible with metric compression fittings, push-fit connectors, and sleeve couplings sized to match the OD you select. For threaded connections, the tube can be tapped internally or fitted with compression nuts. Always verify fitting compatibility with your specific connector brand and confirm the ID clearance before ordering.

Yes. Brass cuts cleanly with a pipe cutter, hacksaw, or milling machine. A pipe cutter generally gives the cleanest, squarest cut with minimal burring. After cutting, deburr the end with a round file or deburring tool before use to avoid sharp edges and ensure a clean fit.