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Copper alloy seamless tubes are drawn from copper alloyed with zinc, beryllium, tellurium, chromium, iron or aluminum — each addition trades a share of pure copper's conductivity for a property engineers need: strength, machinability, heat resistance or seawater resistance. Being seamless, the tubes carry no weld line, so wall thickness and pressure rating stay uniform around the full circumference.
Fengdie Metal is a brass tube and copper alloy tube manufacturer based in Changzhou, China. Our factory draws seamless tubes across the full alloy range — brass C22000–C27000, beryllium copper C17200/C17300/C17510, tellurium copper C14500, chromium zirconium C18150, iron-bearing copper C19200–C19400 and aluminum bronze C60800–C63000 — plus pure copper C11000 and C12200
| No. | Material Name | Material Type | Main Alloying Elements | |
| C14500 | Tellurium Copper | High-Conductivity Free-Machining Copper | Cu + Te | |
| C17200 | Beryllium Copper (High Strength) | Precipitation-Hardened Copper Alloy | Cu + Be | |
| C17300 | | Leaded Beryllium Copper Alloy | Cu + Be + Pb | |
| C17510 | Beryllium Nickel Copper | High Strength & High Conductivity Copper Alloy | Cu + Be + Ni | |
| C18150 | Chromium Zirconium | Precipitation-Hardened Copper Alloy | Cu + Cr + Zr | |
| C19200 | Iron-Bearing Copper | Fe-Cu Copper Alloy | Cu + Fe | |
| C19210 | | Fe-Cu Copper Alloy | Cu + Fe | |
| C19400 | Iron Copper Alloy | High-Strength Conductive Copper Alloy | Cu + Fe |
| No. | Material Name | Material Type | Main Alloying Elements | |
| C22000 | Commercial Bronze | Low-Zinc Brass | Cu + Zn | |
| C23000 | Red Brass | Cu-Zn Brass Alloy | ||
| C24000 | Low-Zinc Brass | Forming Brass | ||
| C26000 | Cartridge Brass (70/30) | Alpha Brass | ||
| C26800 | High Brass (65/35) | Alpha Brass | ||
| C27000 | Deep Drawing Brass (63/37) | Alpha-Beta Brass |
| No. | Material Name | Material Type | Main Alloying Elements | |
| C60800 | Aluminum Bronze | High-Conductivity Free-Machining Copper | Cu + Al | |
| C61300 | Aluminum Bronze (Nickel Modified) | Precipitation-Hardened Copper Alloy | Cu + Al + Ni | |
| C61900 | | Leaded Beryllium Copper Alloy | Cu + Al + Fe | |
| C62300 | Nickel Aluminum Bronze | High Strength & High Conductivity Copper Alloy | Cu + Al + Ni | |
| C63000 | Nickel Aluminum Bronze (High Strength) | Precipitation-Hardened Copper Alloy | Cu + Al + Ni |
1. Seamless, Weld-Free Construction
Uniform wall with no weld-line weakness; reliable under pressure, vacuum and cyclic loads.
2. Full Alloy Range from One Supplier
From free-machining C14500 to marine-grade C63000: one quality system, one certificate format, one point of contact.
3. Temper & Age-Hardening Control
Annealed, half-hard and hard tempers; age-hardened delivery for beryllium copper and CrZr on request.
4. Machinability Options
Leaded C17300 and tellurium C14500 cut fast on automatic lathes without giving up conductivity.
5. Corrosion & Seawater Resistance
Aluminum bronze and brass grades built for marine, desalination and chemical duty.
6. Tight Dimensional Tolerance
Cold-drawn OD and wall control with a smooth bore, compatible with standard fittings.
Changzhou Fengdie Metal Technology Co., Ltd.is leading manufacturer and supplier of high-precision steel tubes based in China, we specialize in cold rolled precision seamless steel tubes, cold drawn precision tubes, precision cold rolled tubing, and related products such as Copper Seamless Tube、hydraulic cylinder tubes, Precision Steel Tube、Precision Rolled Tube、Premium Shock Absorbers. With years of expertise in advanced cold rolling and cold drawing processes, we deliver seamless steel tubes that meet stringent international standards including DIN 2391, EN 10305-1/2/4, ASTM A519, and JIS G3445.
Our products feature exceptional dimensional accuracy (±0.025–0.08mm OD tolerance), superior surface finish (Ra ≤0.2–0.8μm), enhanced mechanical properties, and reliable performance under high pressure and fatigue conditions.
Serving global markets—including Japan, Europe, and beyond—we supply Tier 1/Tier 2 customers in hydraulic systems, automotive components (shock absorbers, steering), precision machinery, construction equipment, and industrial applications. Committed to quality, we hold ISO 9001/IATF 16949 certifications, provide EN10204 3.1/3.2 material certificates, and ensure stable delivery with flexible MOQs for both trial and bulk orders.
End capping and sealing — Tubes are typically capped at both ends (often plastic or metal caps) and sometimes vacuum-sealed or individually wrapped to prevent moisture ingress and maintain cleanliness.
Bundling — Straight tubes are bundled together (e.g., 50–100 pieces per bundle, depending on size) using steel straps, steel wire, plastic straps, or reinforced with wooden laths. Palletizing — Bundles are placed on wooden or metal pallets for stability, often shrink-wrapped or strapped securely. This is standard for larger or longer straight lengths.
Coils — Soft or coiled tubes (common in refrigeration/ACR types) are coiled into reels or boxes, sometimes with protective wrapping. Additional protection — For premium or precision tubes, plastic film, kraft paper, or non-woven fabrics may wrap bundles to avoid surface marks. Larger or custom orders may use wooden crates or boxes.
Documentation — Shipments often include quality certificates, test reports, and material data sheets.
These methods ensure tubes arrive in good condition, as copper is relatively soft and prone to deformation.
Typical Timelines and Considerations
Lead times vary for custom sizes or large orders within 30 business days for stock items.
Top-Tier Thermal Conductivity & Energy Efficiency Champion
Copper's thermal conductivity far exceeds that of aluminum, making it particularly suitable for heat pump systems, inverter air conditioners, battery cooling pipes in new energy vehicles, and high-efficiency heat exchangers. Using our thin-walled precision seamless copper tubing (≤5mm diameter trend) can significantly reduce refrigerant charge, improve system SEER/APF energy efficiency by 2-5, and contribute to carbon neutrality goals.
Ultra-Long Lifespan & Ultimate Corrosion Resistance
Natural antibacterial properties + dense oxide film, resistant to seawater, acids, alkalis, and formic acid corrosion, easily exceeding 50 years of service life. Widely used in medical gas tubing, antibacterial drinking water tubing (NSF/ANSI 61 certified), marine engineering, and seawater desalination systems.
Truly Seamless and Leak-Free
High-pressure burst testing far exceeds industry standards, eliminating the risk of longitudinal weld seams, perfectly compatible with R32/R410A/R454B new environmentally friendly refrigerant high-pressure pipelines, LPG/natural gas transportation, and industrial high-pressure cooling.
Installation-friendly & Cost-effective
Flexible and easy-to-bend flexible coils facilitate flaring and welding, reducing the number of joints by over 30%; supports degreasing and nitrogen-sealing packaging (medical/food grade), fixed-length cutting, and small-batch customization, reducing overall project costs.
Green and Sustainable First Choice
100% recyclable, compliant with LEED green building certification, EU RoHS & REACH. Seamless copper tubing is a core material for the explosive growth of global heat pumps, solar water heating, and data center liquid cooling by 2026.
Copper Seamless Tubes are typically manufactured using:
Copper billet heating
Extrusion or piercing
Cold drawing for dimensional accuracy
Annealing (if required)
Straightening, cutting, and inspection
Excellent thermal and electrical conductivity
Superior corrosion resistance
High pressure and temperature resistance
Smooth inner surface for efficient fluid flow
Long service life and recyclability
Air conditioning and refrigeration systems
Heat exchangers and condensers
Plumbing and water supply systems
HVAC installations
Medical gas pipelines
