The Copper Alloy Steel Seamless Tube ASME SB111 C70600 is a high-performance tube used primarily in heat exchangers, condensers, and cooling systems. Made from C70600 copper-nickel alloy, which contains 90% copper and 10% nickel, this tube offers excellent corrosion resistance, particularly in marine environments and other aggressive media. It is highly resistant to seawater corrosion, making it ideal for use in seawater heat exchangers, desalination plants, and industrial cooling systems.
Key Features
1.Base Tube Material: C70600 Copper-Nickel Alloy
C70600, also known as Cu90Ni10, is a copper-nickel alloy that combines excellent corrosion resistance with high thermal conductivity, making it an ideal material for heat exchangers.
It is known for its superior resistance to seawater, oxidation, and stress corrosion cracking, making it suitable for marine environments and industrial applications where corrosion resistance is critical.
C70600 has good mechanical properties, including high strength and ductility, which makes it highly reliable in high-pressure systems.
2. Seamless Tube
The seamless manufacturing process eliminates welds, ensuring a stronger, more durable tube with a uniform wall thickness and smooth inner surface.
This provides improved fluid flow and resistance to mechanical stress compared to welded tubes, ensuring long-lasting performance in heat exchanger applications.
3. Application: Heat Exchanger Tube
The C70600 seamless tube is ideal for use in heat exchangers and cooling systems where high heat transfer efficiency and corrosion resistance are essential.
Typical applications include marine cooling systems, seawater desalination plants, boilers, and chemical processing where the fluid being cooled or heated may contain aggressive chemicals or be in direct contact with seawater.
Chemical Composition
| Element | C70600 Copper-Nickel Alloy (Base Tube) |
|---|---|
| Copper (Cu) | 90% |
| Nickel (Ni) | 10% |
| Iron (Fe) | ≤ 1.0% |
| Manganese (Mn) | ≤ 1.0% |
| Phosphorus (P) | ≤ 0.04% |
| Sulfur (S) | ≤ 0.03% |
Mechanical Properties
| Property | C70600 Copper-Nickel Alloy |
|---|---|
| Tensile Strength | 310 - 550 MPa |
| Yield Strength | ≥ 180 MPa |
| Elongation | ≥ 30% |
| Hardness | Brinell hardness: 90 - 130 HB |




Advantages of C70600 Copper-Nickel Alloy Tube
Excellent Corrosion Resistance:
C70600 offers outstanding resistance to seawater corrosion, pitting, and crevice corrosion, making it ideal for use in marine cooling systems, desalination plants, and other applications exposed to harsh environments.
High Thermal Conductivity:
Copper-nickel alloy offers excellent thermal conductivity, enhancing the heat transfer efficiency in heat exchangers and condensers.
Durability and Strength:
The high strength and ductility of C70600 make it capable of withstanding high pressure and temperature conditions, ensuring long-lasting reliability in demanding applications.
Seamless Construction:
The seamless tube construction ensures uniformity in wall thickness and smoothness, providing better fluid flow and resistance to mechanical stress compared to welded tubes.
Versatility:
The C70600 copper-nickel alloy tube is used in a wide range of applications, including marine heat exchangers, chemical processing, air conditioning systems, and industrial cooling systems.
Applications
Marine Heat Exchangers: Used for cooling systems in ships, offshore platforms, and seawater-cooled condensers.
Seawater Desalination Plants: Ideal for use in reverse osmosis systems where seawater needs to be cooled and filtered.
Chemical Processing: Used in chemical reactors, heat exchangers, and coolers where corrosion resistance is critical.
Boilers and Condensers: Applied in power plants for efficient cooling and heat transfer.
HVAC Systems: Used in large-scale air-conditioning and refrigeration systems where high heat dissipation is required.
The C70600 Copper Alloy Steel Seamless Tube (ASME SB111) is an excellent choice for heat exchangers, condensers, and cooling systems in environments requiring high corrosion resistance and thermal efficiency. With its superior resistance to seawater corrosion, high thermal conductivity, and durability, it is ideal for applications in marine systems, chemical processing, and industrial cooling systems. The seamless construction ensures reliability and performance in high-pressure and high-temperature environments.
Copper products that GNEE can provide
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Material |
T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,TP1,TP2, C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,TU1,TU2,etc |
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Shape |
Round, square, rectangular, etc. |
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Length |
3m,5.8m, 6m, 11.8m, 12m, or as required. |
|
Wall Thickness |
0.2mm-120mm |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc |
|
Ultimate Strength (≥ MPa) |
460-680 |
|
Cu (Min) |
99% |
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Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
|
Specifications |
Round:Wall thickness: 0.2mm~120mm,Outside Diameter: 2mm~910mm Square:Wall thickness: 0.2mm~120mm, Size: 2mm*2mm~1016mm*1016mm |
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Package |
Export standard package: bundled wooden box, suit for all kinds of transport,or be required |
|
Standard
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ASTMB152,B187,B133,B301,B196,B441,B465,JISH3250-2006,
GB/T4423-2007,etc |
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Material
|
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,
C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300, C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200, C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000, C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620, C71000,C71500,C71520,C71640,C72200,etc |
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Diameter
|
3mm~800mm
|
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Length
|
1.0m 5.8m,6m,or as required
|
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Container Size
|
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) |
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Price Term
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EXW, FOB, CFR, CIF, etc.
|
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Application
|
Copper bar is widely used in boat building,War industry, Car industry and communication
industry where the components need good wear proof and great corrosion resistance |
| Copper Plate / C1100 T2 Pure Copper Sheet 3mm 6mm Thick Customized Sizes Electric Copper Plate | |
| Production Standard | ASTM, JIS, DIN, GB, ISO |
| Material | Copper, Brass, Bronze, White Copper |
| Width | 20mm-2000mm or as the customer's request |
| Thickness | 0.1mm-200mm or as the customer's request |
| Length | 50mm-3000mm |
| Hardness | O, 1/4 Hard, 1/2Hard, 3/4 Hard, H, EH |
| OEM Service | Perforated, Cutting special size, Doing flatness, Surface treatment, etc |
| Payterm | Ex-work, FOB, CIF, CFR, etc |
| Payment | T/T, L/C, Western Union, Alibaba Trade Assurance, etc |
| Delivery Time | Within 3 days for our stock size, 7-15 days for our production |
| Package |
Export standard package: bundled wooden box, suit for all kinds of transport, or be required |
| MOQ | No MOQ for stock Size, 100 KG for our production. |
| Sample | Free and available |
| Quality |
Mill Test Certificate, ISO9001, SGS, TVE |
| Advantage |
Copper is a very ductile and malleable metal. It is high electrical conductivity and high thermal conductivity. Thus, copper parts have a significant advantage for the production of electronic and electrical components. |
|
Product Name |
Copper Wire |
|
Standard |
ASTM AISI DIN EN GB JIS |
|
Grade |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,
C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300, C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200, C71000,C71500,C71520,C71640,C72200 T1,T2,T3,TU1,TU0,TU2,TP1,TP2,etc |
|
Size |
OD:as required |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2 hard,full hard,soft,etc |
|
Tolerance |
±1% |
|
Price Terms |
FOB,CFR,CIF |
Copper CNC machined parts
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Business type |
Factory/Manufacturer |
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service |
Metal 3D printing, metal printing, metal powder sintering, plastic 3D printing, custom CNC machining, precision parts CNC 5-axis |
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Apply |
Automobile assembly parts, automation equipment parts, shafts, sheet metal processing, medical equipment, machinery, aircraft, |
|
Materials |
AL 6061-T6,6063,7075-T |
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303,304,316L,17-4(SUS630 |
|
|
4140,Q235,Q345B,20#,45# |
|
|
TA1,TA2/GR2,TA4/GR5,TC4,TC18 |
|
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C36000(HPb62),C37700(HPb59),C26800(H68),C22000(H90) |
|
|
Copper, bronze, magnesium alloy, photosensitive resin, PA6, PA66, POM, acrylic, PC, etc |
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finish |
Sand blasting, anodizing color, blackening, electroplating, electrolytic polishing |
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Powder coating, PVD passivation, titanium plating, electro zinc plating |
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Electrochromium plating, electrophoresis, QPQ (quenching-polishing-quenching |
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Electrolytic polishing, chrome plating, knurling, laser etching marks, etc. |
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Main equipment |
Metal printer 3/4/5 axis CNC machining center CNC machining center (milling machine), CNC lathe, grinder |
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Cylindrical grinders, drilling machines, laser cutting machines, etc. |
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Drawing format |
STEP,STP,GIS,CAD,PDF,DWG,DXF |
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tolerance |
Customer drawing requirements |
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Surface roughness |
Ra 0.1~3.2 |
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Inspect |
Complete testing laboratory equipped with micrometers, optical comparators, vernier calipers, coordinate measuring machines |
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Depth caliper vernier, universal protractor, clock, internal Celsius meter |
|
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capacity |
Metal 3D printer working scope 420mm*420mm*450mm |
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CNC turning work scope φ0.5mm-φ150mm*300mm |
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CNC milling work scope 510mm*1020mm*500mm |
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Supply capacity |
200000 pieces/month |
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Packing type: |
PP bags, cartons, wooden boxes, PVC pallets, machine parts copy paper |
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Quality control |
100% inspected |
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Delivery time |
Sample day: within 7 days |

About Us
Founded in 2008, we specialize in exporting premium copper products. Our manufacturing leverages continuous casting lines and precision drawing machines. Rigorous quality control, including eddy current testing and spectrometer analysis, guarantees the superior performance of our copper tubes and coils for global applications.
If you need any help, please contact us immediately!
Email address:sales@gneemetal.com
Square Meters Built
Enterprise Employees
Cooperating Partner
Years Experience




