ASME SB111 C68700 Low Finned Tubes for Heat Exchangers

ASME SB111 C68700 Low Finned Tubes are high-performance enhanced-surface tubes engineered to improve heat transfer efficiency in shell and tube heat exchangers, condensers, evaporators, air coolers, and thermal processing equipment. Manufactured from Aluminum Brass (UNS C68700), these tubes combine excellent corrosion resistance, superior thermal conductivity, and enhanced mechanical strength, making them ideal for demanding marine, power generation, desalination, petrochemical, and industrial heat transfer applications.

The low fin geometry significantly increases the external heat transfer area compared to plain tubes, resulting in higher thermal performance, reduced equipment size, and lower operating costs. Our ASME SB111 C68700 low fin tubes are precision manufactured to meet stringent dimensional tolerances and international quality standards.

• Manufactured from ASME SB111 UNS C68700 Aluminum Brass
• Enhanced heat transfer efficiency through precision low finning
• Excellent resistance to seawater and brackish water corrosion
• High thermal conductivity for improved process performance
• Superior resistance to biofouling and erosion-corrosion
• Reduced heat exchanger footprint and material consumption
• Suitable for new installations and retubing projects
• Available in customized fin geometries and tube dimensions
• Fully traceable production and inspection documentation

• Shell & Tube Heat Exchangers
• Surface Condensers
• Evaporators
• Air Cooled Heat Exchangers
• Power Plants
• Desalination Plants
• Marine Cooling Systems
• Offshore Platforms
• Petrochemical Facilities
• Chemical Processing Plants
• HVAC & Refrigeration Systems

Custom dimensions are available upon request.

The low fins are mechanically formed from the tube wall without adding external material, ensuring excellent fin-to-tube integrity and efficient thermal performance. Precision finning technology maintains tube strength while maximizing external surface area for enhanced heat exchange efficiency.

• Visual Inspection
• Dimensional Verification
• Eddy Current Testing
• Hydrostatic Pressure Testing
• Air Under Water Leak Testing
• Ultrasonic Testing (UT)
• Mechanical Property Testing
• Chemical Composition Analysis
• Fin Geometry Inspection
• Surface Roughness Examination
• Positive Material Identification (PMI)
• Third-Party Inspection (TPI) upon request

• ASME SB111
• ASTM B111
• UNS C68700
• EN and customer-specific specifications
• Project-specific inspection and testing requirements

The combination of Aluminum Brass metallurgy and low fin enhancement technology provides outstanding heat transfer performance in aggressive cooling water environments. These tubes offer extended service life, lower maintenance requirements, improved energy efficiency, and reliable operation under demanding industrial conditions.

For applications requiring superior seawater corrosion resistance and optimized thermal efficiency, ASME SB111 C68700 Low Finned Tubes represent a proven and cost-effective solution for modern heat exchanger systems.