ASTM B111 C71500 Seamless Copper Alloy Tubes – Superior Heat Transfer & Saltwater Resistance for Heat Exchangers, Boilers, and Marine Systems

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Material & Chemical Composition

C71500 (Copper-Nickel 70/30) is a high-grade alloy optimized for seawater and chemical resistance. Key components:

Mechanical Properties

Key Advantages

Unrivaled Saltwater Resistance: Withstands pitting, crevice corrosion, and biofouling in marine environments (ASTM G52 compliance).

High Thermal Conductivity: 29 W/m·K (2x higher than stainless steel), ideal for condensers and heat exchangers.

Seamless Integrity: Cold-drawn and annealed processes ensure zero defects and uniform wall thickness (±3%).

Long-Term Durability: Service life exceeding 25 years in seawater applications.

Applications

✅ Marine Condensers & Heat Exchangers

✅ Desalination Plant Pipelines

✅ Offshore Oil & Gas Cooling Systems

✅ Chemical Processing Equipment

FAQ

Q: What is the maximum operating temperature?
A: Up to 400°C (752°F) in non-oxidizing environments.

Q: Do you offer customized bending or flaring?
A: Yes, we provide precision bending (radius ≥2x OD) and flaring services with tight tolerances (±0.1mm).

Q: What certifications do you provide?
A: Full ASTM B111, ASME SB111, and EN 12451 compliance with MTC and third-party inspection reports (SGS/BV).

Why Choose Yuhong Holding Group?

As a global leader in thermal solutions, we combine 55 production lines, 20,000㎡ facility, and 110+ skilled technicians to deliver:

End-to-End Expertise: From raw material procurement to advanced cold-drawn processing and surface treatment.

Rigorous Quality Control: 100% ultrasonic testing and hydrostatic pressure checks (up to 30 MPa).

Fast Global Delivery: 15-day lead time for standard orders, supported by DDP, FOB, or CIF logistics.

Competitive Pricing: Bulk order discounts for projects exceeding 10 tons.

Discover more high-performance solutions at www.steelfintube.com or contact us for a tailored quote!

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.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.