Fin & Tube Cooling Coils | DX & Chilled Water Coils

Thermodynamic Design

Engineered For Maximum Heat Transfer & Low Airside Resistance

Aircon Fin & Tube heat exchangers are engineered to meet exacting thermal requirements in HVAC Air Handling Units (AHUs), Fan Coil Units (FCUs), cleanrooms, and continuous process plants.

By mechanically expanding seamless deoxidized copper or stainless steel tubes into self-spacing corrugated aluminum fins, we achieve a permanent, gas-tight mechanical bond. This guarantees uninterrupted primary-to-secondary thermal conduction over decades of continuous operational life.

AHRI Standard Sizing 100% Helium Leak Tested ASME Sec IX Welding 450 PSI Pressure Rated

Specialized Geometries

Coil Categories & Fluid Configurations

Tailored thermal solutions for cooling, dehumidification, heating, and phase-change condensing.

Chilled Water Coils (AHU / FCU)

For Central Cooling, Comfort Air, & Dehumidification

Engineered with optimized circuiting to maintain waterside velocities between 3 to 6 feet/second (FPS). This eliminates laminar flow dead-zones while keeping hydraulic pressure drop well within pump head ratings.

Standard Rows: 2, 4, 6, 8, 10, or 12 Rows
Fin Spacing: 6 to 14 Fins Per Inch (FPI)
Connections: Threaded BSP/NPT or Class 150 Flanges
Features: Air Vents & Drain Plugs Standard

Direct Expansion (DX) Evaporator Coils

Refrigerant Cooling for Precision Cleanrooms & Ducted Systems

Equipped with precision brass venturi distributor nozzles and calibrated capillary feeder tubes. Interlaced circuiting ensures uniform air discharge temperature across the coil face even during partial load operation.

Compatible Gases: R410A, R32, R134a, R407C, R404A
Tube Surface: Rifled / Inner Grooved for High Heat Flux
Distributor: Brass Venturi Distributor with Solder Tails
Test Pressure: 450 PSI (32 Bar) Nitrogen Holding

Air-Cooled Condenser Coils

Refrigerant Vapor Condensation for Chillers & Condensing Units

Engineered with dedicated sub-cooling circuits at the coil base, ensuring 3°C to 5°C of liquid subcooling before the expansion valve to boost refrigeration cycle COP and reduce compressor strain in high ambient environments (up to 52°C).

Fins: Louvered Aluminum / Anti-Corrosion Hydrophilic
Circuits: Multi-circuit with Subcooling Loops
Casing: Heavy Galvanized Steel or 2.0mm Aluminum

Steam & Hot Water Heating Coils

Winter Heating, Pre-Heaters, & Process Drying Systems

Built with heavy-gauge 5/8" OD tubing and pitched header manifolds to ensure rapid gravitational drainage of steam condensate, preventing freeze-up ruptures and destructive water hammer shocks.

Tube Spec: Heavy Wall 5/8" OD (0.6mm - 1.0mm wall)
Design Pressure: Up to 15 Bar Steam Service
Headers: Heavy-Duty Schedule 40 Carbon Steel / SS316

Manufacturing Specifications

Engineering Parameters & Standards

Comprehensive manufacturing tolerances and material grades for engineering design.

Component	Available Specifications & Material Grades	Engineering Standards
Tube Diameters (OD)	7mm, 3/8" (9.52 mm), 1/2" (12.70 mm), 5/8" (15.88 mm)	ASTM B75 / ASTM B280 / ASTM A269
Tube Metallurgy	Deoxidized High Phosphorus (DHP) Copper, Stainless Steel SS304/316L, 90/10 Cupro-Nickel	ASME SB-75 / SB-111 / SA-249
Fin Geometries	Corrugated Sine Wave, High-Flux Louvered, Plain Flat	AHRI 410 Certified Profile
Fin Metallurgy & Coatings	High-purity Aluminum, Hydrophilic Blue Fin, Blygold Anti-Corrosion, Epoxy Gold Fin, Copper Fin	ASTM B117 (3000h Salt Spray Test)
Fin Density (FPI)	4 to 16 Fins Per Inch (Self-spacing collar)	Precision Die Formed
Casing Materials	Galvanized Iron (GI 1.6mm - 2.5mm), SS304, SS316, Heavy Aluminum 5052	CNC Punched & Brake Formed
Headers & Manifolds	Seamless Copper Pipe, Schedule 40 Carbon Steel, SS316 with threaded NPT or Class 150 Flanges	ASME B16.5 / B16.9
Pressure Testing	Hydrostatic proof testing up to 450 PSI (32 Bar) under illuminated water + Helium Leak Detection	100% Quality Inspected

Request Detailed Coil Engineering Datasheet