Brass Round Tube 300mm — H65 Brass Pipe, 1–36mm OD, 0.2–2mm Wall Thickness

Start with the outer diameter (OD) your application requires — for example, a 10mm OD tube fits inside a 10mm bore. Then choose wall thickness based on load: thinner walls (0.2–0.5mm) suit lightweight model-making and decorative work, while thicker walls (1–2mm) are generally better for structural or fluid-carrying applications.

To find the inner diameter (ID), subtract twice the wall thickness from the OD. For example, a 10mm OD × 1mm wall tube has an 8mm ID (≈0.315"). A 6mm OD × 0.5mm wall tube has a 5mm ID (≈0.197").

H65 is a Chinese national standard (GB/T) cartridge brass containing approximately 65% copper and 35% zinc. It offers good machinability, moderate tensile strength, and solid corrosion resistance in most indoor and mild outdoor environments. It is generally comparable to C26000 (cartridge brass) used in US/ASTM standards and CW505L in European EN standards.

Brass is naturally corrosion-resistant and typically performs well in moderate humidity and mild outdoor conditions. However, prolonged exposure to saltwater, ammonia, or highly acidic environments can cause dezincification or stress corrosion cracking over time. For marine or harsh outdoor use, consider applying a protective lacquer or clear sealant to the tube surface.

Load and pressure capacity depend on OD, wall thickness, and the specific application. Thicker-walled tubes (1–2mm wall) generally handle higher structural loads and moderate fluid pressure. Thin-walled tubes (0.2–0.5mm wall) are suited for light-duty, decorative, or model-making uses where structural loading is minimal. For critical pressure or load-bearing applications, consult an engineer and confirm specifications before ordering.

These tubes use metric OD dimensions (1mm–36mm). Metric compression fittings are typically sized by tube OD, so a 6mm OD tube generally fits a 6mm metric compression fitting. For imperial fittings, verify the OD in inches before ordering — for example, 6mm OD ≈ 0.236", 10mm OD ≈ 0.394", 12mm OD ≈ 0.472". Thread compatibility is not applicable to these plain tubes.

Yes. H65 brass machines, cuts, and solders well. Use a pipe cutter or fine-tooth hacksaw for clean cuts, and deburr cut ends before assembly. Brass solders easily with standard lead-free or silver solder. It can also be drilled, tapped, and carefully bent (use a tube bender or fill with sand for thin-walled sizes to prevent kinking). Thin-walled tubes (0.2–0.5mm) require more care when bending or cutting to avoid deformation.

Each tube is 300mm (≈11.8") long. Custom lengths are not available through this listing. If you need a shorter piece, the tube can be cut to size with a pipe cutter or hacksaw. For bulk orders or custom length inquiries, please contact us directly before placing your order.