H70 brass tube, also known as C26000 alloy or 70/30 brass, is renowned for its ideal composition of 70% copper and 30% zinc. This alloy perfectly combines high strength, excellent formability, and outstanding corrosion resistance, particularly excelling in resistance to dezincification. Produced in strict accordance with international standards such as ASTM B111, JIS H3300, and EN CW505L, it has become a reliable material for heat management applications, precision engineering, and high-end architectural decoration.
Jiangsu Cunrui Metal Products Co., Ltd. manufactures H70 brass tubes using advanced extrusion and cold drawing processes, ensuring the products have precise dimensional tolerances, smooth inner and outer surfaces, and highly consistent mechanical properties. Its fine-grained structure endows it with excellent workability, making it easy to bend, flange, and deep draw, thus meeting your most stringent industrial and construction project requirements.
H70 Brass Tube holds up with balanced strength and resistance to dezincification. It lasts a long time in fresh water or mild chemicals. We send out all tubes with full mill test certificates.
Specifications & Technical Parameters
| Property | Specification |
| Material | H70 Brass (CuZn30) |
| Copper (Cu) | 68.5–71.5% |
| Zinc (Zn) | Balance |
| Standard | ASTM B111 / JIS H3300 / EN CW505L |
| Outer Diameter | 4 mm – 120 mm |
| Wall Thickness | 0.5 mm – 10 mm |
| Length | Up to 6000 mm or as required |
| Temper | Soft, Half-Hard, Hard |
| Tensile Strength | ≥ 350 MPa |
| Elongation | ≥ 25% |
| Surface Finish | Bright, Polished, or Pickled |
| Tolerance | ±0.05 mm or as per order |
Why Choose Us?
01
High Strength with Good Ductility
This alloy is strong but still easy to work with. You can bend it, flare it, and deep draw it without it cracking or getting distorted.
02
Outstanding Thermal and Electrical Conductivity
As a high-copper brass alloy, H70 is an excellent material for manufacturing condensers, radiators, and various heat exchanger components, which can significantly improve energy efficiency and equipment stability.
03
Smooth Surface and Precision Dimensions
These tubes are made using a special cold-drawing method, so they have really clean surfaces inside and out. They're great if you need to move fluids or put together precise machines.
Products Application
H70 Brass Tube is a versatile material that meets the demands of multiple industries.
Heat Exchangers & Condensers: Its excellent heat transfer capability and corrosion resistance ensure stable operation and low maintenance costs.
Instrumentation & Precision Components: The smooth bore and dimensional accuracy make it suitable for measuring instruments, valves, and fittings.
Architecture & Decoration: Its golden color and polishable surface are ideal for handrails, lighting fixtures, and ornamental structures.
Marine & Plumbing Systems: With strong resistance to seawater and freshwater corrosion, it performs well in piping, pump lines, and condenser tubing.
With H70 Brass Tube from Jiangsu CunRui Metal Products Co., Ltd, you get reliable, long-lasting tubes with clean surface finishes and consistent quality because of careful manufacturing.
Our Service
Quick Inquiry Response
We reply to all inquiries within 24 hours, offering detailed technical support and quotations.
Professional Export Experience
Over 10 years of supply experience to Europe, Southeast Asia, and the Middle East.
After-Sales Support
Replacement or refund for any verified quality issue within warranty terms.
Flexible Logistics
We work with reliable freight partners to ensure timely global delivery by sea or air.
Customization and Service
Jiangsu CunRui Metal Products Co., Ltd provides full customization to meet project-specific requirements.
Dimension & Tolerance Control
Custom outer diameters, wall thicknesses, and lengths are available with precision cutting.
Surface Finish
Options include bright annealed, mirror polished, or brushed finishes.
Packaging
Seaworthy packing with plastic caps, moisture-proof wrapping, and wooden boxes for safe export.
Inspection & Certification
Mill Test Certificates (EN 10204 3.1/3.2), SGS or BV inspection available upon request.
FAQ
Q: What is the minimum order quantity (MOQ)?
A: Our standard MOQ is 100 kg, but smaller quantities can be arranged for trial orders or samples.
Q: Do you provide samples?
A: Yes, small samples are available free of charge; customers only need to cover shipping costs.
Q: How long is your delivery time?
A: Generally, 10–20 days for stock sizes and 25–35 days for customized orders.
Q: Can you produce according to drawings or special requirements?
A: Absolutely. We offer precision cutting, bending, drilling, and customized packaging per your specifications.
Q: What payment terms do you accept?
A: We accept T/T, L/C, and other negotiable international trade terms.
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