Copper Tube & Copper Bar Manufacturer and Supplier
As a professional copper pipe and copper rod supplier with 18 years of metal industry expertise, we serve clients across more than 60 countries, providing high-quality copper tubes and copper rods for HVAC & refrigeration, plumbing engineering, heat exchangers, electrical equipment, industrial machinery, and fluid transport systems. Our product portfolio covers major copper grades including C10100, C10200, C11000, C12000, and C12200, available in round pipes, pancake coils, straight tubes, round bars, square bars, and other custom forms tailored to specific project requirements. To help customers minimize material selection risks and secure technically reliable, quality-assured copper products, we provide EN 10204 3.1 Material Test Certificates (MTC), chemical composition analyses, tensile and hardness test reports, dimensional inspection data, surface inspection logs, eddy current or hydrostatic testing reports (upon request), as well as third-party inspection certificates from SGS, BV, or equivalent authorities.
Copper Alloy Tube Supplier - GNEE
We supply copper tubes and copper rods in a wide variety of grades, dimensions, and temper conditions, widely utilized in HVAC, refrigeration, heat exchangers, plumbing engineering, electrical, marine, and general industrial sectors. Our copper tube portfolio covers grades including C10100, C10200, C11000, C12000, C12200, C44300, C68700, C70600, and C71500, available as seamless straight tubes, cut-to-length pipes, pancake coils, level wound coils (LWC), U-bend tubes, and other customized configurations. Depending on the grade and application requirements, our copper tubes are manufactured in compliance with ASTM B75, ASTM B88, ASTM B111, ASTM B280, and equivalent EN/JIS standards, with typical outer diameters ranging from approximately 4 mm to 300 mm and wall thicknesses from 0.3 mm to 15 mm.
Copper Alloy Tube Specification
| Product | Common Grades | Standards | Forms | Typical Applications |
|---|---|---|---|---|
| Copper Water Tube | C12200, C12000 | ASTM B88 | Straight | Plumbing, Water Supply |
| ACR Copper Tube | C10200, C12200 | ASTM B280 | Coil / Straight | HVAC, Refrigeration |
| Bright Annealed Copper Tube | C10200, C12200 | ASTM B68 | Coil / Straight | Refrigeration, Oil Lines |
| Seamless Copper Tube | C10100, C10200, C12200 | ASTM B75/B68/B280 | Coil / Straight | Industrial |
| Copper Condenser Tube | C10100, C10200, C12200 | ASTM B111/B111M | Straight | Heat Exchangers |
| Copper Tube in Coil | C10200, C12200 | ASTM B743 | Coil | HVAC, Heat Transfer |
Copper Tube Temper / Delivery Condition
| Physical Condition | ASTM (USA) | EN (Europe) | JIS (Japan) | GB (China) |
|---|---|---|---|---|
| Soft / Annealed | O60 / O50 | R220 | O / OL | M (Annealed) |
| Half Hard | H55 / H58 | R250 | 1/2H | Y2 (Half Hard) |
| Hard | H80 | R290 | H | Y (Hard) |
If you'd like, tell me:What is the application (plumbing, HVAC, or industrial)?
Do you need straight lengths or coils?
I can help you select the exact temper and standard required.
Copper Bar Supplier - GNEE
Our copper rod product line encompasses C10100, C11000, C12200, C14500, and select copper alloy grades, supplied in round, square, rectangular, and hexagonal cross-sections. Common bar diameters range from approximately 5 mm to 300 mm, with custom lengths available upon request. Copper rods are supplied in accordance with standards such as ASTM B187 in cold-drawn, annealed, or other specified temper states. Upon request, we provide dimensional inspection, chemical composition verification, tensile and hardness testing, eddy current or other applicable non-destructive testing (NDT), along with EN 10204 3.1 Material Test Certificates (MTC).
Copper Grade Equivalents
Commercially Pure Copper
| UNS | ASTM / USA Common Name | EN | JIS / Japan | GB/T / China |
|---|---|---|---|---|
| C10100 | OFE | Cu-OFE / CW009A | C1011 | TU0 |
| C10200 | OF | Cu-OF / CW008A | C1020 | TU1 |
| C10300 | OFXLP | Cu-OF | — | — |
| C10800 | OFLP | Cu-OF | — | — |
| C11000 | ETP | Cu-ETP / CW004A | C1100 | T2 |
| C11100 | ETP Anneal Resistant | Cu-ETP | — | — |
| C11300 | STP | CuAg | C1130 | TAg0.1 |
| C12000 | DLP | Cu-DLP | C1201 | TP1 |
| C12200 | DHP | Cu-DHP / CW024A | C1220 | TP2 |
| C12500 | FRTP | — | — | — |
Brass
| UNS | ASTM Common Name | EN | JIS / Japan | GB/T |
|---|---|---|---|---|
| C21000 | 95/5 Brass | CuZn5 / CW500L | C2100 | H96 |
| C22000 | Commercial Bronze | CuZn10 / CW501L | C2200 | H90 |
| C23000 | Red Brass | CuZn15 / CW502L | C2300 | H85 |
| C24000 | Low Brass | CuZn20 | C2400 | H80 |
| C26000 | Cartridge Brass | CuZn30 / CW505L | C2600 | H70 |
| C26800 | Yellow Brass | CuZn33 | C2680 | H68 |
| C27000 | Yellow Brass | CuZn35 | C2700 | H65 |
| C27200 | Yellow Brass | CuZn37 / CW508L | C2720 | H62 |
| C28000 | Muntz Metal | CuZn40 / CW509L | C2800 | H59 |
| C31400 | Leaded Brass | — | — | — |
| C33000 | Leaded Brass | — | — | HPb59 Series |
| C35300 | Leaded Brass | — | — | HPb62 Series |
| C36000 | Free-Cutting Brass | CuZn39Pb3 / CW614N | C3604 | HPb58-2 |
| C37700 | Forging Brass | CuZn40Pb2 / CW617N | C3771 | HPb59-1 |
| C38500 | Architectural Brass | CuZn39Pb3 | — | — |
Phosphor Bronze
| UNS | Common Name | EN | JIS / Japan | GB/T |
|---|---|---|---|---|
| C50100 | Phosphor Bronze | CuSn2 | — | QSn2 |
| C50500 | Phosphor Bronze | CuSn4 | — | QSn4 |
| C51000 | Phosphor Bronze | CuSn5 / CW451K | C5102 | QSn5 |
| C51100 | Phosphor Bronze | CuSn4 | C5111 | QSn4-0.3 |
| C51900 | Phosphor Bronze | CuSn6 / CW452K | C5191 | QSn6.5-0.1 |
| C52100 | Phosphor Bronze | CuSn8 / CW453K | C5210 | QSn8-0.3 |
| C52400 | Phosphor Bronze | CuSn10 | — | QSn10 |
| C54400 | Free-Cutting Phosphor Bronze | CuSn4Zn4Pb4 | C5441 | QSn4-4-2.5 |
Aluminum Bronze
| UNS | Common Name | EN Common | JIS / Japan | GB/T |
|---|---|---|---|---|
| C60600 | Aluminum Bronze | CuAl5 | — | QAl5 |
| C61000 | Aluminum Bronze | CuAl8 | — | QAl9 |
| C61300 | Aluminum Bronze | CuAl8Fe | — | QAl9-2 |
| C61400 | Aluminum Bronze | CuAl8Fe | — | QAl9-4 |
| C61900 | Aluminum Bronze | CuAl10Fe | — | QAl10-3 |
| C62300 | Aluminum Bronze | CuAl10Fe | — | QAl10-4 |
| C62400 | Aluminum Bronze | CuAl10Fe | — | QAl10-4-4 |
| C63000 | Nickel Aluminum Bronze | CuAl10Ni5Fe | — | QAl10-5-5 |
| C63200 | Nickel Aluminum Bronze | CuAl10Ni5Fe | — | QAl10-5-5 |
| C95400 | Aluminum Bronze | CuAl10Fe | — | QAl9-4 |
| C95500 | Nickel Aluminum Bronze | CuAl10Ni5Fe | — | QAl10-5-5 |
Silicon Bronze
| UNS | Common Name | EN | JIS / Japan | GB/T |
|---|---|---|---|---|
| C64700 | Silicon Bronze | CuSi2 | — | QSi2 |
| C65100 | Low-Silicon Bronze | CuSi2 | — | QSi2 |
| C65500 | High-Silicon Bronze | CuSi3 | C6560 | QSi3-1 |
| C66100 | Silicon Bronze | CuSi | — | — |
Copper-Nickel Alloys
| UNS | Common Name | EN | JIS / Japan | GB/T |
|---|---|---|---|---|
| C70400 | Cu-Ni 5 / 95-5 Copper-Nickel | CuNi5 | — | B5 |
| C70600 | Cu-Ni 90/10 | CuNi10Fe1Mn / CW352H | C7060 | BFe10-1-1 |
| C71000 | Cu-Ni 80/20 | CuNi20 | — | B20 |
| C71500 | Cu-Ni 70/30 | CuNi30Mn1Fe | C7150 | BFe30-1-1 |
| C71640 | Copper-Nickel Alloy | CuNi30Fe | — | — |
| C72200 | Copper-Nickel-Silicon Alloy | — | — | — |
Downloads & Documents
Please let me know if you are looking for copper alloys for specific projects—such as piping systems, marine applications, or electrical engineering. You can click to download and consult the technical standards!
| Standard | Product | Main Application |
|---|---|---|
| ASTM B88 | Seamless Copper Water Tube | Plumbing / Water |
| ASTM B280 | Seamless ACR Copper Tube | Air Conditioning / Refrigeration |
| ASTM B68 | Bright Annealed Copper Tube | Refrigeration / Oil Lines |
| ASTM B75 | Seamless Copper Tube | General Industrial |
| ASTM B743 | Seamless Copper Tube in Coils | HVAC / Heat Transfer |
| ASTM B111/B111M | Condenser & Heat Exchanger Tube | Heat Exchangers |
| ASTM B152/B152M | Copper Sheet, Strip, Plate & Rolled Bar | Industrial / Electrical |
Recommended Industries for Copper Tubes and Copper Rods
HVAC & Refrigeration
Recommended Products: Seamless copper tubes | Straight tubes | Coils | Cut-to-length tubes | Capillary tubes
Applications: Air conditioning heat exchangers | Refrigeration units | Heat pump systems | Refrigerant piping | Connecting lines
Power & Electrical
Recommended Materials: C10100 / C10200 / C11000
Recommended Products: Copper rods | Round copper rods | Flat copper rods | Copper bars | Busbars | Copper connectors
Applications: Transformers | Switchgear | Power distribution cabinets | Busbar systems | Electrical connections | New energy power distribution equipment
Heat Exchanger & Thermal Management
Recommended Materials: C10100 / C10200 / C12200 / C68700
Recommended Products: Heat exchanger tubes | Copper coils | Straight copper tubes | U-tubes | Cut-to-length tubes
Applications: Condensers | Evaporators | Heat exchangers | Boiler systems | Industrial coolers | Heat pump equipment
Marine & Industrial Equipment
Recommended Materials: C70600 / C71500 / C95400 / C95800
Recommended Products: Copper-nickel alloy tubes | Copper alloy rods | Rods for pipe fittings | Industrial copper alloy products
Applications: Seawater cooling systems | Marine heat exchangers | Marine engineering | Industrial valves | Pump bodies | Corrosion-resistant equipment
Precision Hardware & CNC Machining
Recommended Materials: C36000 / C37700 / C14500
Recommended Products: Round bars | Hexagonal bars | Square bars | Profiled bars | Fixed-length bars | CNC machining stock
Applications: Precision valves | Pipe fittings | Fasteners | Electronic connectors | Sensor components | Precision mechanical parts
Automotive & New Energy Vehicles
Recommended Materials: C10100 / C10200 / C11000 / Copper Alloys
Recommended Products: Copper Rods | Copper Tubes | Copper Strips | Copper Plates | Copper Busbars | Custom Copper Parts
Applications: Battery Connectors | Busbars | Charging Systems | Motor Components | Electrical Connectors | Thermal Management Systems
If you'd like, let me know:Are you looking for copper tubes or copper rods specifically?
What is the intended application or project?
I can provide the recommended alloy grades (like ETP or DHP) or material specifications for your use case.
Professional Copper Alloy Supplier – GNEE
GNEE implements rigorous quality control across the entire lifecycle of its copper tubes, rods, and alloy materials—from raw materials and manufacturing to inspection and packaging. We utilize advanced manufacturing equipment, standardized process flows, and comprehensive testing methods to ensure full traceability for every batch of products.
Our copper production lines are equipped with melting furnaces, holding furnaces, semi-continuous casting units, rolling mills, extrusion presses, drawing machines, annealing furnaces, in-line straightening equipment, cutting machines, surface treatment systems, and automated inspection devices. We select the appropriate processing techniques based on the specific specifications of the copper tubes, rods, and alloys. For high-precision copper tubes, we strictly control outer diameter, wall thickness, and roundness through multiple stages of cold rolling, drawing, and precision straightening; for copper rods, we employ hot working, cold working, and annealing processes tailored to specific alloy grades and temper requirements.
Our Production Equipment
production process of copper tubes
Raw Material Inspection → Melting/Batching → Casting → Hot Rolling/Extrusion → Cold Rolling/Drawing → Intermediate Annealing → Finishing & Straightening → Cut-to-Length → Surface Treatment → In-line Inspection → Finished Product Inspection → Packaging → Shipment.
Quality Control
GNEE provides comprehensive copper tube inspection covering chemical composition, tensile strength, elongation, hardness, dimensions, surface quality and internal cleanliness. According to product requirements, we can provide 100% Eddy Current Testing, hydrostatic/air-pressure testing, laser diameter measurement and cleanliness testing. For HVAC and refrigeration tubes such as C10200, C12000 and C12200, inspection can be performed according to ASTM B280 requirements, with MTC/EN 10204 3.1 certificates and inspection reports available for batch traceability.
Professional Packaging
Copper tubes and rods are packaged using methods tailored to their specific form, dimensions, and mode of transport. Straight tubes are typically secured using moisture-proof film, PE bags, and wooden crates or pallets. Coiled tubes feature moisture-proof packaging with reinforced coil securing; precision and refrigeration-grade tubes may additionally be fitted with end caps and wrapped in protective plastic film and moisture-proof materials to prevent the ingress of dust and moisture, as well as to guard against mechanical impact. Goods destined for export are reinforced in accordance with container shipping standards to prevent deformation, abrasion, or packaging damage during long-distance ocean transport.
FAQ
Q1:What is the difference between copper tube and copper pipe?
A:Copper tube is generally specified by outside diameter (OD) and wall thickness, making it suitable for HVAC, refrigeration and heat-transfer systems. Copper pipe is often specified by nominal pipe size (NPS) and schedule. For example, a copper tube may be 22 × 1.0 mm, while pipe dimensions follow applicable piping standards.
Q2: What is ASTM B88 copper tube?
A:ASTM B88 covers seamless copper water tube for plumbing and related applications. Common types include Type K, L and M, with different wall thicknesses and pressure capabilities. Tubes are typically supplied in straight lengths or coils, with C12200 phosphorus-deoxidized copper widely used for reliable forming and soldering.
Q3:What is ASTM B280 copper tube?
A:ASTM B280 specifies seamless copper tube for air-conditioning and refrigeration field service, with strict requirements for cleanliness and dimensional accuracy. Common material is UNS C12200, supplied in straight lengths or coils. Typical applications include refrigerant lines, heat exchangers and HVAC systems operating under demanding pressure and cleanliness conditions.
Q4:What is C12200 copper?
A:C12200 phosphorus-deoxidized high-residual phosphorus copper (DHP) contains approximately 99.9% Cu and controlled phosphorus. Its excellent brazing, welding and forming characteristics make it widely used for HVAC, refrigeration and plumbing tubes. C12200 is commonly supplied under ASTM B88, ASTM B280 and related copper tube specifications.
Q5:What is C11000 copper?
A:C11000 electrolytic tough-pitch copper (ETP) typically contains at least 99.90% Cu and offers very high electrical and thermal conductivity, commonly around 100% IACS. It is widely used for electrical conductors, busbars, heat exchangers and fabricated copper components where conductivity and good formability are primary requirements.
Q6: What is the difference between C11000 and C12200?
A:C11000 and C12200 are both commercially pure copper grades, but their properties differ. C11000 provides approximately 100% IACS conductivity, making it ideal for electrical applications. C12200 contains controlled phosphorus, reducing oxygen-related problems during brazing and welding, so it is preferred for HVAC, refrigeration and plumbing tubes.
Q7:What is the difference between annealed and hard-drawn copper tube?
A:Annealed copper tube is heat-treated to a softer temper, providing excellent flexibility and allowing tight bending or coiling. Hard-drawn copper tube has higher strength and rigidity but less ductility. For example, annealed tube is commonly selected for field installation, while hard-drawn tube is preferred for straight, mechanically stable piping systems.
Q8:How do I choose copper tube wall thickness?
A:Wall thickness should be selected according to working pressure, temperature, tube diameter, installation method and applicable standard. HVAC systems may require different thicknesses from plumbing applications. For example, a 22 × 1.0 mm tube has different pressure capability from a 22 × 1.5 mm tube, so design conditions should be confirmed before ordering.
Q9:Can copper tubes be supplied in coils?
A:Yes. Copper tubes can be supplied as straight lengths or coils, depending on grade, temper, diameter and application. Annealed copper tube is particularly suitable for coiling. Common HVAC sizes include approximately 6–28 mm OD, while coil lengths can be customized according to project requirements, equipment capacity and transportation limits.
Q10:What tests are performed on copper tubes?
A:Copper tubes can undergo chemical composition analysis, dimensional inspection, tensile testing, hardness testing, eddy-current testing, hydrostatic or pneumatic testing, and visual inspection. For refrigeration tubes, cleanliness and internal surface requirements are especially important. Inspection can be performed according to ASTM B88, ASTM B280 or the customer's technical specification.
Q11:Can you provide EN 10204 3.1 certificates?
A:Yes. We can provide EN 10204 3.1 Material Test Certificates (MTC) with the shipment when specified in the purchase order. The certificate can include heat number, chemical composition, mechanical properties, dimensions, applicable standard and test results, allowing customers to trace the copper tube back to its production batch.
Q12:What information should I provide for a copper tube quotation?
A:For an accurate quotation, please provide the copper grade, standard, outside diameter, wall thickness, length, temper, quantity, tube form and application. For example: ASTM B280 C12200, 22 × 1.0 mm, annealed, 15 m coils, 5 tons. Please also specify destination, packing requirements and preferred FOB/CIF/CFR terms.
Gnee Steel (Tianjin) Co., Ltd. is well-known as one of the leading copper alloy manufacturers and suppliers in China. Our factory offers customized copper alloy made in China with competitive price. Welcome to contact us for wholesale service.