YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Delivery Time | 7days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Production Name | Heat Exchanger Tube |
| Standard | ASTM B111, ASME SB111 |
| Material | UNS C71500 , CuNi 70/30 |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. |
| WT | BWG 25, 22, 20, 18 ... 10 |
| Length | Single Random, Double Random & Cut Length |
| Tube End | Plain End, Beveled End |
| Process | Cold Drawn |
| Application | Boiler, Heat Exchanger, Oil and Gas Plant, Cooling, Condenser |
| High Light | ASTM B111 UNS C71500 Copper Nickel Tube, Heat Exchanger Tubee |
| Brand Name | YUHONG |
| Model Number | ASTM B111 UNS C71500 Copper Nickel Seamless Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Production Name | Heat Exchanger Tube |
| Standard | ASTM B111, ASME SB111 | Material | UNS C71500 , CuNi 70/30 |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. | WT | BWG 25, 22, 20, 18 ... 10 |
| Length | Single Random, Double Random & Cut Length | Tube End | Plain End, Beveled End |
| Process | Cold Drawn | Application | Boiler, Heat Exchanger, Oil and Gas Plant, Cooling, Condenser |
| High Light | ASTM B111 UNS C71500 Copper Nickel Tube, Heat Exchanger Tubee | Brand Name | YUHONG |
| Model Number | ASTM B111 UNS C71500 Copper Nickel Seamless Tube | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM B111 copper nickel seamless tube ，UNS C71500 heat exchanger tube ，CuNi 70/30 seamless tubing | ||
ASTM B111 UNS C71500 / CuNi 70/30 Copper Nickel Seamless Tube
ASTM B111 UNS C71500 is the proven, reliable standard for seamless tubes in clean seawater heat exchange. Its success hinges on proper water chemistry (clean, oxygenated), correct flow velocity, and adherence to sound fabrication practices to preserve its innate corrosion properties. It is chosen not for its absolute strength, but for its predictable, long-term performance in one of the most corrosive natural environments.
Environmental & Lifecycle Considerations
Sustainability: Copper-nickel is 100% recyclable without loss of properties, with a high recycled content in production.
Lifecycle Cost: While the initial cost is higher than carbon steel or aluminum brass, the Total Cost of Ownership (TCO) over a 25-40+ year lifespan in seawater is often lower due to minimal maintenance, no required chemical dosing, and high reliability.
Biofouling Resistance: Its natural anti-fouling property eliminates the need for toxic anti-fouling paints or coatings within tubing, making it an environmentally preferred choice for seawater systems.
Chemical Composition of Copper Alloys
| Designation | Chemical Composition % | ||||||||
| Cu | Sn | Al | As | Ni | Fe | Mn | Pb max. | Zn | |
| C44300 | 70.0-73.0 | 0.9-1.2 | – | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C68700 | 76.0-79.0 | – | 1.8-2.5 | 0.02-0.06 | – | 0.06 max | – | 0.07 | Rem |
| C70400 | Rem | – | – | – | 4.8-6.2 | 1.3-1.7 | 0.3-0.8 | 0.05 | 1.0max |
| C70600 | Rem | – | – | – | 9.0-11.0 | 1.0-1.8 | 1.0max | 0.05 | 1.0max |
| C71500 | Rem | – | – | – | 29.0-33.0 | 0.4-1.0 | 1.0max | 0.05 | 1.0max |
| C71640 | Rem | – | – | – | 29.0-32.0 | 1.7-2.3 | 1.5-2.5 | 0.05 | 1.0max |
Equivalent Grades of Copper Alloys
| Material Designation | Corresponding Material Symbol | ||||
| GB/T8890 | ASTM B111 | BS2871 | JIS H3300 | DIN1785 | |
| Copper-Nickel | BFe10-1-1 | C70600 | CN102 | C7060 | CuNi10Fe1Mn |
| BFe30-1-1 | C71500 | CN107 | C7150 | CuNi30Mn1Fe | |
| (BFe30-2-2) | C71640 | CN108 | C7164 | CuNi30Fe2Mn2 | |
| (BFe5-1.5-0.5) | C70400 | – | – | – | |
| B7 | – | – | – | – | |
| Aluminums Brass | HAL77-2 | C68700 | CZ110 | C6870 | CuZn20Al2 |
| Admiralty Brass | HSn70-1 | C44300 | CZ111 | C4430 | CuZn28Sn1 |
| Boric Brass | Hsn70-18 | – | – | – | – |
| HSn70-1 AB | – | – | – | – | |
| Arsenical Brass | H68A | – | CZ126 | – | – |
| Brass Tube | H65/H63 | C28000/C27200 | CZ108 | C2800/C2700 | CuZn36/CuZn37 |
Tensile Requirements:
| Copper or Copper Alloy UNS NO. | Temper Designation | Tensile Strength | Yield Strength | |
| Standard | Former | min ksi | min ksi | |
| C44300 | O61 | annealed | 45 | 15 |
| C68700 | O61 | annealed | 50 | 18 |
| C70400 | H55 | light-drawn | 38 | 30 |
| C70600 | H55 | light-drawn | 45 | 15 |
| C71500 | O61 | annealed | 52 | 18 |
| C71640 | O61 | annealed | 63 | 25 |
Application
Superior Seawater Corrosion Resistance: Forms a tight, protective surface oxide film. Highly resistant to impingement attack, stress corrosion cracking (SCC), and macro-fouling (biomarine growth attaches poorly compared to other metals).
Key Applications:
Seawater Cooled Condensers & Heat Exchangers (power plants, ships, offshore platforms).
Desalination Plant (Multi-Stage Flash & Multi-Effect Distillation) evaporator and heat rejection tubes.
Shipboard Piping for fire mains, bilge, and ballast systems.
Marine Engineering and coastal infrastructure.
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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