High-Precision C11000/T2 Pure Copper Capillary Tubes for HVAC&R Systems

Our C11000/T2 Pure Copper Capillary Tubes are precision-engineered for critical flow control in refrigeration and air conditioning systems. Made from 99.99% pure copper (C11000/T2/C1100/ECU-58), these tubes serve as efficient restrictors for refrigerant flow and pressure regulation. Available in hard, soft, or half-hard tempers, they ensure reliable performance in demanding environments. With customizable dimensions and international certification (ASTM B280, EN 12735-1, JIS H3300), our capillary tubes meet global engineering standards.

• Material: Oxygen-free pure copper (C11000/T2), 99.99% conductivity
• Precision Tolerances: ID control down to ±0.01mm for consistent flow
• Compatibility: Works with R134a, R410a, R407a, and hydrocarbon refrigerants
• Surface Finish: Bright annealed or polished, internally clean
• Flexible Supply: Straight lengths (up to 12m) or coils (5–50kg)

General size:

1)Grade : C1100,C1020, C1220, and other alloys

2)Outside Diameter: >=1.5mm

3) Wall Thickness: >=0.45mm

4)coil weight: 5kg 10kg 20kg 50kg or not fixed weight per coil

Production Standard: ASTM B280, ASTM B360 JISH3300 .etc

Copper tube Temper: Soft , half hard , hard

Package: Each end capped ,enlanced by the foam bags and then put into the cartons.

copper tube / copper tubes / copper tubing / copper piping / copper coil / pipe coil / Capillary tubeThe capillary tube is the simplest type of refrigerant flow control device and may be used in place of an expansion valve.

The capillary tubes are small-diameter tubes through which the refrigerant flows into the evaporator. These devices, which are widely used in small hermetic-type refrigeration systems (up to 30 kW capacity), reduce the condensing pressure to the evaporating pressure in a copper tube of small internal diameter (0.4-3 mm diameter and 1.5-5 m long), maintaining a constant evaporating pressure independently of the refrigeration load change. These tubes are used to transmit pressure from the sensing bulb of some temperature control device to the operating element. A capillary tube may also be constructed as a part of a heat exchanger, particularly in household refrigerators.

With capillary tubes, the length of the tube is adjusted to match the compressor capacity. Other considerations in determining capillary tube size include condenser efficiency and evaporator size. Capillary tubes are most effective when used in small capacity systems.

Products Specification : Capillary copper tube,as a throttling device,is another vital part of all the refrigeration systems and air conditioning systems apart from the compressor ,condenser and the evaporator. Our Refrigeration & Air conditioning Grade Capillary Tubes As per JIS H3300 ASTM B/360 hard drawn / ASTM B68 Bright Annealed with mirror finish inside & outside, compatible with R 134a,R-410a,R-407a, Hydrocarbons.

Details :

• Size: 1.00mm OD to 4.00mm OD
• Wall Thickness : 0.30mm to 2.5mm
• Straight Length : Up to 6Meter hard or soft
• Coils: 5kg 10kg 20kg 50kg or not fixed weight per coil

copper tube / copper tubes / copper tubing / copper piping / copper coil / pipe coil /Capillary tube/Capillary pipe

Capillary tubes are used in areas such as refrigerant piping for air-conditioners and refrigerators. Various tube ends (stopper, flare, etc.) and bendings are available to meet customer needs. Uniting the capillary tube with its connecting (brazing) portion lowers costs while also raising quality and reliability. Base length can be freely specified, and stopper, bending and other treatments are available.

copper tube / copper tubes / copper tubing / copper piping / copper coil / pipe coil / Refrigeration parts/Air conditioner part

The capillary tube is the simplest type of refrigerant flow control device and may be used in place of an expansion valve. The capillary tubes are small-diameter tubes through which the refrigerant flows into the evaporator. These devices, which are widely used in small hermetic-type refrigeration systems (up to 30 kW capacity), reduce the condensing pressure to the evaporating pressure in a copper tube of small internal diameter (0.4-3 mm diameter and 1.5-5 m long), maintaining a constant evaporating pressure independently of the refrigeration load change. These tubes are used to transmit pressure from the sensing bulb of some temperature control device to the operating element. A capillary tube may also be constructed as a part of a heat exchanger, particularly in household refrigerators.

With capillary tubes, the length of the tube is adjusted to match the compressor capacity. Other considerations in determining capillary tube size include condenser efficiency and evaporator size. Capillary tubes are most effective when used in small capacity systems.

Products Specification : Refrigeration & Air conditioning Grade Capillary Tubes As per JIS H3300 ASTM B/360 hard drawn / ASTM B68 Bright Annealed with mirror finish inside & outside, compatible with R 134a,R-410a,R-407a, Hydrocarbons.

Details :

• Size: 1.00mm OD to 4.00mm OD
• Wall Thickness : 0.30mm to 2.5mm
• Straight Length : Up to 6Meter hard or soft
• Coils: 5kg 10kg 20kg 50kg or not fixed weight per coil

copper tube / copper tubes / copper tubing / copper piping / copper coil / pipe coil

Details:

Capillary copper tube for HVAC&R industry

Capillary copper tube are critical parts used as restrictors against refrigerant flow and pressure in the refrigeration cycle of air conditions, electric refrigerators, showcases freezer, this copper tubing usually manufactured with fine precision, down to one thousandth of an inch. This precision allows airflow to be smoother, more uniform, and more closely monitored, making such applications as fluid & air restrictors much more useful. Capillary copper tubing has very small inside diameters.

Our Capillary copper tube is produced in C12200 (Cu-DHP) alloy to the hard drawn, light Drawn, light annealed and soft annealed temper. Our copper capillary tubings are manufactured in strict according to American Standard ASTM B360 and European Standard EN 12450. Features With controlled Inside Diameter. Higher Cleanliness. Compatible for usage of R134a, R124A ETC Refrigerants.

Main material: 99.99% copper

General size:

• 1)Grade : C1100,C1020, C1220, and other alloys
• 2)Outside Diameter: >=1.5mm
• 3) Wall Thickness: >=0.45mm
• 4)coil weight: 5kg 10kg 20kg 50kg or not fixed weight per coil

Production Standard: ASTM B280, ASTM B360 JISH3300 .etc

Copper tube Temper: Soft , half hard , hard

Package:

• Annealed coil form
• Hard coil form
• Pancake coil form
• Straight tube length,such as 2.1M 2.3M 2.5M etc with /without bulge
• Coil form capillary copper pipe packed with Each end capped ,enlanced by the foam bags and then put into the cartons.
• Straight capillary copper pipe with fixed length packed with each end capped,enlanced by the foam bags and then loading by the wooden box.

1. HVAC & Refrigeration
   – Air conditioner throttling devices
   – Refrigerator evaporator connections
   – Heat exchanger components
2. Automotive
   – Automotive AC systems
   – Oil cooling lines
3. Industrial & Medical
   – Instrumentation and sensor lines
   – Gas and fluid control systems
   – Medical device piping
4. General Engineering
   – Plumbing and hydraulic systems
   – Electrical grounding conductors
   – Decorative and architectural uses

1. Pressure Reduction: High-pressure liquid refrigerant from the condenser enters the narrow capillary tube. The small internal diameter (typically 0.4–3mm) creates a pressure drop, reducing the refrigerant to low-pressure, low-temperature liquid.
2. Flow Control: The tube’s length and inner diameter are calibrated to match compressor capacity and system load, maintaining stable evaporator pressure.
3. Evaporator Feed: The cooled refrigerant expands into the evaporator, absorbing heat from the surrounding environment.
4. System Advantages:
   – No moving parts → low maintenance
   – Cost-effective compared to expansion valves
   – Ideal for small to medium hermetic systems (up to 30kW)