High-performance SA214 ERW carbon steel fin tubes with Cuni 90/10 KL footed aluminum fins, designed for demanding industrial heat exchange applications. These tubes feature 13 fins per inch and meet API Standard 661 requirements for air-cooled heat exchangers in refinery service.

The aluminum fin strip is folded into an 'L' shape and wound onto the base tube surface under tension. The tube surface is knurled before tension application, and the fin feet are joined together to cover the finned surface completely.

• API Standard 661 compliance for air-cooled heat exchangers
• Hydrostatic or pneumatic pressure testing
• Eddy current testing for material integrity
• Tensile tests to verify mechanical bonding
• End protection with zinc or aluminum metalized coating

• Power plant heat exchangers (electric, nuclear, thermal, geothermal)
• High corrosive systems (condensers, evaporators, sea water desalination)
• Petroleum, chemical and petrochemical industries
• Food processing and refrigeration industries
• Natural gas treatment facilities

Our facility includes 7 finning machines with daily production capacity up to 5,000 meters. We operate from a 10,000+ square meter workshop dedicated to fin tube manufacturing.

• Knurling process strengthens adhesion and reduces fin loosening
• Suitable for aggressive operating conditions
• Superior heat transfer characteristics compared to L and LL types
• Compatible with high-value alloys including titanium, stainless steel, copper, and nickel
• End protection ensures corrosion resistance during transportation