Brass Round Tube 300mm — H65 Brass Pipe, 1–36mm OD, 0.2–2mm Wall Thickness
Brass Round Tube 300mm — Precise Sizing for DIY, Model Making & Light Fabrication Finding a small-diameter metal tube in exactly the right size shouldn't require a trip to a specialty metal supplier. Whether you're repairing a plumbing fitting, building a scale model, crafting a custom jewelry piece, or fabricating a mechanical prototype, having the right brass tube on hand makes the difference between a clean result and a frustrating workaround. These H65 brass round tubes are stocked in a wide range of outer diameters and wall thicknesses so you can match your project spec without compromise. Each tube is made from H65 brass (approximately 65% copper, 35% zinc) and measures 300mm (≈11.8") in length. Outer diameters range from 1mm (≈0.039") to 36mm (≈1.417"), with wall thicknesses available in 0.2mm, 0.25mm, 0.5mm, 1mm, 1.5mm, and 2mm. Smaller OD sizes (1–5.5mm) are sold in packs of 3 pieces; larger sizes are sold individually. Select your exact OD × wall thickness combination from the variant dropdown above. Typical applications include hobby and scale model construction, small-bore fluid transfer lines, decorative metalwork and jewelry fabrication, DIY repair of brass fittings, and precision spacers or standoffs in mechanical assemblies. The consistent wall thickness and smooth drawn finish make these tubes well-suited for projects where dimensional accuracy matters. ℹ️ Sizing note: Tube dimensions are metric (OD × Wall × Length in mm). To find the inner diameter (ID), subtract twice the wall thickness from the OD. Example: 10mm OD × 1mm wall = 8mm ID (≈0.315"). Verify your fitting or bore size before ordering. ✅ Key Features of These Brass Round Tubes 🔩Wide Size Range — OD from 1mm to 36mm with wall thicknesses of 0.2mm, 0.25mm, 0.5mm, 1mm, 1.5mm, and 2mm, covering a broad range of small-diameter brass tube applications in a single listing. 🟡H65 Brass Construction — Made from H65 cartridge brass (≈65% Cu, 35% Zn), offering good machinability, reliable solderability, and moderate corrosion resistance for indoor and mild outdoor use. 📏Consistent 300mm Length — Each tube is 300mm (≈11.8") long, providing a workable length for most hobby, repair, and light fabrication tasks while remaining easy to cut to a shorter dimension. ✂️Easy to Cut, Solder & Machine — Brass cuts cleanly with a pipe cutter or fine-tooth saw, solders with standard lead-free solder, and machines well for drilling, tapping, or bending — useful for custom brass tube fabrication projects. 🎯Drawn Tube Finish — The smooth drawn surface provides consistent outer diameter tolerances, making these tubes suitable for use as precision spacers, standoffs, or sliding fits in mechanical assemblies. 📦Flexible Pack Quantities — Smaller diameters (typically up to 5.5mm OD) are available in 3-piece packs for convenience; larger diameters are sold individually. Select your preferred quantity from the QTY option above. 📐 Technical Specifications — Brass Round Tube Material H65 Brass (≈65% Copper, 35% Zinc) Outer Diameter (OD) Range 1mm (≈0.039") – 36mm (≈1.417") Wall Thickness Options 0.2mm, 0.25mm, 0.5mm, 1mm, 1.5mm, 2mm Length 300mm (≈11.8") Inner Diameter (ID) OD minus 2× wall thickness (see variant options) Surface Finish Drawn, smooth exterior Pack Quantity 1 pc or 3 pcs (see variant options) Tube Shape Round (circular cross-section) Applicable Standards H65 per GB/T 1527 (generally comparable to C26000 / CW505L) Recommended Uses Model making, hobby crafts, light plumbing repair, jewelry, mechanical spacers Machinability Good — suitable for cutting, drilling, tapping, soldering, and bending Country of Origin China ⚠️ Confirm your ID before ordering: Inner diameter is not a selectable variant — calculate it as OD − (2 × wall thickness). If your application requires a specific ID, verify the math before adding to cart. Contact us to confirm if needed. ❓ Frequently Asked Questions How do I choose the right OD and wall thickness for my project? 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"). What does H65 brass mean, and how does it compare to other brass grades? 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. Can these brass tubes be used outdoors or in humid environments? 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. What load or pressure can these tubes handle? 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. Are these tubes compatible with standard metric fittings or connectors? 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. Can I cut, solder, bend, or machine these brass 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. How long are the tubes, and are custom lengths available? 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. 🛒 Select your OD, wall thickness, and quantity above, then add to cart — ships from our US warehouse.