English
A red copper tube — the term international buyers use for a pure copper tube — is a seamless tube of unalloyed copper (≥99.9% Cu), named for its natural reddish color. Unlike brass tubes (copper-zinc alloys), pure copper pipes contain almost no alloying elements, giving them the highest thermal and electrical conductivity among common engineering tube materials, plus natural antibacterial properties for drinking-water and medical use.
Our seamless red copper pipes are formed from solid billets by extrusion or piercing, then multi-pass cold drawing — no welds, no seams, uniform wall thickness, and zero risk of weld-line leakage under high pressure.
| Grade | GB | Type | Best For | |
| C12200 (DHP) | TP2 | Phosphorus-deoxidized | ACR tube, plumbing, heat exchangers — the industry default | |
| C11000 (ETP) | T2 | Electrolytic tough pitch | Electrical parts, busbar tube, general purpose (~100% IACS) | |
| C12000 (DLP) | TP1 | Low-phosphorus deoxidized | Refrigeration & condenser tube needing higher conductivity than TP2 | |
| C10200 (OF) | TU1 | Oxygen-free | Vacuum, electronics, high-purity systems |
| Item | Metric | |
| Outer Diameter | 3 – 108 mm | |
| Wall Thickness | 0.3 – 5.0 mm | |
| Straight Lengths | up to 5.8 m / 6 m, cut-to-length | |
| Coils | Pancake coil 15 m / 30 m, LWC | |
| Temper | Soft annealed (O60), half-hard (H55), hard drawn (H58/H80) | |
| Standards | ASTM B280 (ACR), B75, B88 (Type K/L/M), B68, B819 (medical gas); EN 1057, EN 12735-1/2; JIS H3300; GB/T 1527, GB/T 17791 | |
| Surface & Cleanliness | Bright annealed; degreased, cleaned & capped, nitrogen-sealed bore for ACR / medical grade | |
| Testing & Certs | 100% eddy current test, hydrostatic / pneumatic test, chemical & mechanical analysis, EN 10204 3.1 mill test certificate |
≥99.9% High-Purity Copper Material
Every red copper tube is produced from certified high-purity cathode copper (C11000 / C12200 / C10200), guaranteeing maximum thermal conductivity, electrical conductivity, and decades of corrosion-free service life.
Top-Tier Thermal & Electrical Conductivity
Thermal conductivity of pure copper far exceeds aluminum and steel, making our copper tubing the first choice for air conditioners, heat pumps, EV battery cooling plates, data-center liquid cooling, and high-efficiency heat exchangers.
Truly Seamless & Leak-Free
No welds, no seams — uniform structure with excellent burst resistance. Fully compatible with high-pressure R32 / R410A / R454B refrigerant lines, LPG / natural gas transport, and vacuum systems.
Changzhou Fengdie Metal Technology Co., Ltd. is a leading manufacturer and supplier of precision metal tubing based in China. Alongside our cold-rolled precision seamless steel tubes and hydraulic cylinder honed tubes, we specialize in seamless copper tubes and pure copper (red copper) tubes in grades C11000, C12200, and C10200.
With advanced extrusion, cold-drawing, and bright-annealing lines, plus eddy current and hydrostatic testing equipment, we deliver copper tubing with tight tolerances, superior surface finish, and consistent quality that meets ASTM, EN, JIS, and GB standards. Serving customers across Europe, Japan, North America, and beyond, we support both trial and bulk orders with flexible MOQs and reliable lead times.
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.
