Aluminum Capillary Tube|EN 1050A / EN 3003 / EN 3103
Aluminum capillary tube is a kind of small diameter aluminum tube with thin wall thickness, someone also call it micro tube. Our precision aluminum capillary tubes are manufactured from high-quality EN AW-1050A, EN AW-3003, and EN AW-3103 aluminum alloys, offering excellent thermal conductivity, corrosion resistance, lightweight performance, and outstanding formability. Available in both straight lengths and tube coils, these seamless or welded capillary tubes are widely used in HVAC&R systems, aluminum heat exchangers, electrical equipment, refrigeration, automotive cooling, and industrial fluid transfer applications.
Precision Aluminum Capillary Tube Sizes:
· Outside diameters: 0.8–10 mm
· Wall thicknesses: 0.08–1.20 mm
· Alloys: EN AW-1050A, EN AW-3003, EN AW-3103
· Tempers: O, H12, H14, H16, H18
· Supply forms: Straight lengths or coils
· Custom shapes and dimensions
· Competitive pricing and fast worldwide delivery
Capillary Aluminum Tube Manufacturing Process:
Casting & Extrusion--Multi-pass Cold Drawing--Intermediate Annealing--Final Sizing--Internal Cleaning & Oxide Film Control--Precision Cutting
How We Control Precision Dimensional Tolerances
Our precision aluminum capillary tubes are manufactured with advanced cold drawing technology to ensure exceptional dimensional accuracy, making them ideal for HVAC, refrigeration, heat exchangers, medical devices, and precision industrial applications.
Outside Diameter (OD)
· Minimum Outside Diameter: 0.8 mm
· Diameter Tolerance: ±0.01 mm
· High concentricity and excellent dimensional consistency for precision fluid and refrigerant control applications.
Wall Thickness
· Minimum Wall Thickness: 0.08 mm
· Wall Thickness Tolerance: ±0.005 mm
· Uniform wall thickness ensures reliable pressure resistance, heat transfer efficiency, and superior forming performance.
Length
· Available in standard lengths, straight tubes, tube coils, or custom cut lengths.
· Length Tolerance: ±0.05 mm
· Precision cutting services are available according to customer drawings or specific project requirements.
Available Supply Forms
· Straight tubes
· Coil tubes
· Pancake coils
· Continuous coils
· Cut-to-length tubes
Custom packaging is available for automated production lines.
Aluminum Capillary Tubes Applications:
HVAC & Refrigeration
· Air conditioners
· Refrigeration systems
· Condensers
· Evaporators
· Refrigerant capillary tubes
· Heat pumps
Aluminum Heat Exchangers
· Parallel flow condensers
· Microchannel heat exchangers
· Oil coolers
· Intercoolers
· Radiators
· Brazed aluminum heat exchangers
Electrical Industry
· Electrical conductors
· Cable protection tubes
· Transformer cooling systems
· Busbar cooling components
Automotive Industry
· Automotive condensers
· EV battery cooling systems
· Transmission oil coolers
· Fuel cooling systems
Industrial Applications
· Pneumatic systems
· Hydraulic control systems
· Precision instrumentation
· Medical equipment
· Fluid transfer systems
