C11000 Cu-ETP Copper Tube | Electrolytic Tough Pitch Copper Tube CW004A
High-Purity C11000 Copper Tubes Manufacturer & Supplier in China
We are a professional manufacturer, stockist, and exporter of C11000 Cu-ETP Copper Tubes (CW004A) in China, supplying high-conductivity electrolytic tough pitch copper tubes for electrical, HVAC, plumbing, heat exchanger, and industrial engineering applications worldwide.
Our C11000 copper tubes are produced from ultra-high purity copper (≥99.90%) with controlled oxygen content, ensuring excellent electrical conductivity, superior thermal performance, and reliable mechanical strength.
Equivalent Standards:
- UNS C11000
- CDA 110
- EN CW004A
- ISO Cu-ETP
- JIS C1100
- ASTM B75
- ASTM B88
- ASTM B280
- ASME SB75
What is C11000 Copper (Cu-ETP)?
C11000 Copper, also known as Electrolytic Tough Pitch (Cu-ETP) copper, is one of the most widely used high-conductivity copper grades in the world.
It contains minimum 99.90% copper with a controlled oxygen content, providing:
- Excellent electrical conductivity (≥100% IACS)
- Superior thermal conductivity
- Good corrosion resistance
- Excellent machinability and forming performance
- Stable mechanical properties for industrial use
C11000 is widely used where maximum conductivity and reliability are required.
C11000 Copper Tube Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM | C11000 |
| UNS | C11000 |
| EN | CW004A |
| ISO | Cu-ETP |
| JIS | C1100 |
| BS | C101 |
| DIN | E-Cu |
Chemical Composition of C11000 Copper
| Element | Content (%) |
|---|---|
| Copper (Cu) | ≥ 99.90 |
| Oxygen (O) | 0.02 – 0.04 |
| Phosphorus (P) | ≤ 0.040 |
| Impurities | ≤ 0.10 |
The controlled oxygen level ensures excellent conductivity while maintaining manufacturability.
Mechanical Properties of C11000 Copper Tube
| Property | Value |
|---|---|
| Tensile Strength | 200 – 300 MPa |
| Yield Strength | 40 – 100 MPa |
| Elongation | ≥ 30% |
| Hardness | 40 – 80 HRB |
| Electrical Conductivity | ≥ 100% IACS |
| Density | 8.94 g/cm³ |
Available Sizes of C11000 Copper Tubes
- Outer Diameter: 6 mm – 300 mm
- Wall Thickness: 0.5 mm – 10 mm
- Length: 3 m / 5.8 m / 6 m / Custom Cut Length
- Forms: Straight tubes, coil tubes, U-bend tubes
Available Tempers
- Annealed (O60) – soft, high ductility
- Half Hard (H55)
- Hard Drawn (H58)
Annealed condition is most commonly used for bending and forming applications.
Manufacturing Process
Our C11000 Cu-ETP copper tubes are manufactured using advanced production processes:
- High purity copper cathode melting
- Continuous casting
- Extrusion or piercing
- Cold drawing
- Bright annealing
- Straightening
- Eddy current testing (ECT)
- Hydrostatic testing
- Surface cleaning & inspection
- Export packaging
Each tube is strictly inspected to ensure compliance with ASTM and EN standards.
Key Features of C11000 Copper Tube
✔ Ultra-high electrical conductivity (100% IACS)
✔ Excellent thermal conductivity
✔ High purity copper (≥99.9%)
✔ Excellent corrosion resistance
✔ Superior machinability and formability
✔ Stable performance in long-term service
✔ Reliable brazing and welding capability
Applications of C11000 Copper Tubes
Electrical Industry
- Busbars
- Grounding systems
- Power distribution
- Transformer windings
- Cable conductors
HVAC & Refrigeration
- Air conditioning systems
- Condenser tubes
- Evaporator coils
- Cooling systems
Plumbing & Water Systems
- Potable water pipelines
- Gas distribution systems
- Building plumbing networks
Heat Exchangers & Industrial Equipment
- Heat exchanger tubes
- Boiler systems
- Thermal transfer equipment
- Industrial cooling systems
Automotive & Aerospace
- Fuel lines
- Hydraulic systems
- Radiator tubes
Quality Control & Testing
All C11000 copper tubes are tested according to international standards:
- Chemical composition analysis
- Tensile & elongation testing
- Eddy current testing (ECT)
- Hydrostatic pressure testing
- Dimensional inspection
- Surface quality inspection
- Grain structure evaluation (optional)
Certificates available:
- EN 10204 3.1 Mill Test Certificate
- SGS / BV / TUV third-party inspection
- ISO 9001 quality system certification
Surface Condition & Packaging
- Bright annealed surface
- Cleaned and dried
- Plastic end caps
- Anti-corrosion packaging
- Wooden case or steel strapped bundles
- Export seaworthy packing
Why Choose Our C11000 Copper Tubes?
✔ Direct manufacturer in China
✔ Large stock availability
✔ Competitive factory pricing
✔ Stable quality control system
✔ Fast global delivery
✔ Custom sizes supported
✔ Full certification support
✔ OEM service available
How to Order C11000 Copper Tube
Example:
C11000 Cu-ETP Copper Tube
OD 25 mm × WT 1.0 mm × Length 6 m
Temper: Annealed (O60)
Quantity: 2,000 meters
Standard: ASTM B75 / EN CW004A
FAQ
What is C11000 copper used for?
C11000 is mainly used in electrical, HVAC, plumbing, and heat exchanger systems due to its high conductivity.
Is C11000 the same as CW004A?
Yes. C11000 (UNS) corresponds to EN CW004A (Cu-ETP).
What is the conductivity of C11000 copper?
It provides up to 100% IACS electrical conductivity, making it one of the best conductive copper grades.
Can C11000 copper be welded?
Yes, it can be brazed and welded, but oxygen control is important to avoid embrittlement.
C11000 copper pipe is made from a copper-based alloy withly high purity, usually containing over 99.9% copper. This pipe has excellent electrical and thermal conductivity properties aside from good corrosion resistance and mechanical strength.
C11000 Copper Tubes, also known as Electrolytic Tough Pitch (ETP) Copper Tubes, are 99.9% pure copper with high electrical and thermal conductivity, excellent corrosion resistance, and superior workability. These tubes are widely used in electrical wiring, heat exchangers, plumbing, and industrial applications due to their exceptional properties.
