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Capillary Tubes
Capillary Tubes Capillary Tubes are precision-engineered tubing products with extremely small diameters designed for applications requiring high accuracy, controlled flow, and superior surface finish. These tubes are widely used in medical, instrumentation, refrigeration, and chemical industries where micro level precision and reliability are essential.
Made from high-quality stainless steel, nickel alloys, titanium, and other specialty materials, capillary tubes offer excellent corrosion resistance, mechanical strength, and durability. Their tight dimensional tolerances and smooth internal surfaces make them indispensable for sensitive applications like chromatography, thermocouples, and hydraulic systems.
Moksh Tubes & Fittings LLP, we produce capillaries to ASTM, ASME, and international standards, ensuring consistency, quality, and performance. Our advanced manufacturing techniques, including cold drawing, bright annealing, and precision polishing, ensure capillary tubes meet the most demanding industry requirements.
Specifications
| Category | Details |
|---|---|
| Material | Stainless Steel, Duplex & Super Duplex, Nickel Alloys, Inconel, Monel, Titanium, Copper Alloys |
| Grades | Available in ASTM/ASME certified grades across all mentioned alloys |
| Outer Diameter (OD) | 0.3 mm to 8 mm (custom options available) |
| Wall Thickness | 0.05 mm to 1.0 mm (tolerances as per application needs) |
| Lengths | Standard up to 6 meters or custom coil lengths supplied |
| Finishes | Bright Annealed, Electro Polished, Matte, Mechanical Polished |
| From | Coiled, Straight Lengths, Cut to Length Precision Pieces |
| Standards | ASTM A213, ASTM A269, ASTM B338, DIN, EN standards |
Charts
Weight Chart
| Nominal Bore Chart | Outside Diameter (O.D) (mm) |
Schedule 5C | Schedule 10C | Schedule 40C | Schedule 80C | Schedule 160C | Schedule XXC | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inches | Wt | Weight | Wt | Weight | Wt | Weight | Wt | Weight | Wt | Weight | Wt | Weight | |
| 3 | 1/8 | 10.3 | 0.2 | 0.01 | 0.3 | 0.02 | 0.4 | 0.03 | 0.6 | 0.04 | 0.8 | 0.06 | 1.0 | 0.07 |
| 6 | 1/4 | 13.7 | 0.2 | 0.02 | 0.3 | 0.03 | 0.4 | 0.04 | 0.6 | 0.06 | 0.8 | 0.08 | 1.0 | 0.10 |
| 10 | 3/8 | 17.1 | 0.2 | 0.03 | 0.3 | 0.04 | 0.4 | 0.06 | 0.6 | 0.08 | 0.8 | 0.11 | 1.0 | 0.14 |
| 15 | 1/2 | 21.3 | 0.2 | 0.04 | 0.3 | 0.06 | 0.4 | 0.08 | 0.6 | 0.12 | 0.8 | 0.16 | 1.0 | 0.20 |
| 20 | 3/4 | 26.7 | 0.2 | 0.06 | 0.3 | 0.09 | 0.4 | 0.12 | 0.6 | 0.17 | 0.8 | 0.22 | 1.0 | 0.28 |
| 25 | 1 | 33.4 | 0.2 | 0.08 | 0.3 | 0.12 | 0.4 | 0.17 | 0.6 | 0.25 | 0.8 | 0.33 | 1.0 | 0.41 |
| 32 | 11.4 | 42.2 | 0.2 | 0.13 | 0.3 | 0.19 | 0.4 | 0.26 | 0.6 | 0.38 | 0.8 | 0.50 | 1.0 | 0.62 |
| 40 | 1 1/2 | 48.3 | 0.2 | 0.16 | 0.3 | 0.24 | 0.4 | 0.32 | 0.6 | 0.48 | 0.8 | 0.63 | 1.0 | 0.78 |
| 50 | 2 | 60.3 | 0.2 | 0.24 | 0.3 | 0.36 | 0.4 | 0.47 | 0.6 | 0.70 | 0.8 | 0.93 | 1.0 | 1.17 |
| 65 | 2 1/2 | 73.00 | 0.2 | 0.33 | 0.3 | 0.49 | 0.4 | 0.65 | 0.6 | 0.97 | 0.8 | 1.29 | 1.0 | 1.63 |
| 80 | 3 | 88.9 | 0.2 | 0.47 | 0.3 | 0.70 | 0.4 | 0.93 | 0.6 | 1.40 | 0.8 | 1.87 | 1.0 | 2.36 |
| 100 | 4 | 114.3 | 0.2 | 0.77 | 0.3 | 1.14 | 0.4 | 1.52 | 0.6 | 2.27 | 0.8 | 3.04 | 1.0 | 3.82 |
| 125 | 5 | 141.3 | 0.2 | 1.17 | 0.3 | 1.72 | 0.4 | 2.30 | 0.6 | 3.42 | 0.8 | 4.58 | 1.0 | 5.76 |
| 150 | 6 | 168.3 | 0.2 | 1.63 | 0.3 | 2.41 | 0.4 | 3.23 | 0.6 | 4.79 | 0.8 | 6.38 | 1.0 | 8.02 |
| 200 | 8 | 219.1 | 0.2 | 2.73 | 0.3 | 4.03 | 0.4 | 5.40 | 0.6 | 8.01 | 0.8 | 10.65 | 1.0 | 13.33 |
| 250 | 10 | 273.1 | 0.2 | 4.17 | 0.3 | 6.15 | 0.4 | 8.23 | 0.6 | 12.23 | 0.8 | 16.27 | 1.0 | 20.35 |
| 300 | 12 | 323.9 | 0.2 | 31.25 | 4.57 | 36.00 | 9.52 | 73.88 | 12.7 | 132.0 | 33.32 | 238.76 | 25.40 | 186.97 |
| 300 | 12 | 323.9 | 0.2 | 5.94 | 0.3 | 8.76 | 0.4 | 11.71 | 0.6 | 17.45 | 0.8 | 23.23 | 1.0 | 29.05 |
| 350 | 14 | 355.6 | 0.2 | 7.21 | 0.3 | 10.63 | 0.4 | 14.23 | 0.6 | 21.20 | 0.8 | 28.26 | 1.0 | 35.35 |
| 400 | 16 | 406.4 | 0.2 | 9.29 | 0.3 | 13.70 | 0.4 | 18.35 | 0.6 | 27.37 | 0.8 | 36.46 | 1.0 | 45.59 |
| 450 | 18 | 457.2 | 0.2 | 11.52 | 0.3 | 17.00 | 0.4 | 22.78 | 0.6 | 34.00 | 0.8 | 45.33 | 1.0 | 56.70 |
| 500 | 20 | 508.0 | 0.2 | 13.88 | 0.3 | 20.50 | 0.4 | 27.50 | 0.6 | 41.10 | 0.8 | 54.75 | 1.0 | 68.45 |
| 600 | 24 | 609.6 | 0.2 | 18.93 | 0.3 | 28.00 | 0.4 | 37.50 | 0.6 | 56.05 | 0.8 | 74.68 | 1.0 | 93.95 |
Size Charts
Schedule 5C – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.30 | 0.05 | 0.00028 |
| 0.50 | 0.05 | 0.00045 |
| 0.80 | 0.08 | 0.00080 |
| 1.00 | 0.10 | 0.00140 |
| 1.50 | 0.12 | 0.00250 |
| 2.00 | 0.15 | 0.00370 |
| 2.50 | 0.20 | 0.00620 |
| 3.00 | 0.25 | 0.00970 |
| 3.50 | 0.30 | 0.01380 |
| 4.00 | 0.35 | 0.01890 |
| 5.00 | 0.40 | 0.02700 |
| 6.00 | 0.50 | 0.04150 |
| 8.00 | 0.50 | 0.05500 |
Schedule 10C – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.30 | 0.06 | 0.00033 |
| 0.50 | 0.08 | 0.00055 |
| 0.80 | 0.10 | 0.00095 |
| 1.00 | 0.12 | 0.00160 |
| 1.50 | 0.15 | 0.00290 |
| 2.00 | 0.20 | 0.00480 |
| 2.50 | 0.25 | 0.00750 |
| 3.00 | 0.30 | 0.01100 |
| 3.50 | 0.35 | 0.01520 |
| 4.00 | 0.40 | 0.02040 |
| 5.00 | 0.50 | 0.03120 |
| 6.00 | 0.60 | 0.04900 |
| 8.00 | 0.60 | 0.06280 |
Schedule 40C – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.50 | 0.10 | 0.00065 |
| 0.80 | 0.12 | 0.00110 |
| 1.00 | 0.15 | 0.00200 |
| 1.50 | 0.20 | 0.00390 |
| 2.00 | 0.25 | 0.00610 |
| 2.50 | 0.30 | 0.00950 |
| 3.00 | 0.35 | 0.01370 |
| 3.50 | 0.40 | 0.01880 |
| 4.00 | 0.45 | 0.02450 |
| 5.00 | 0.50 | 0.03340 |
| 6.00 | 0.60 | 0.05350 |
| 8.00 | 0.70 | 0.07900 |
Schedule 80C – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.50 | 0.12 | 0.00075 |
| 0.80 | 0.15 | 0.00130 |
| 1.00 | 0.20 | 0.00240 |
| 1.50 | 0.25 | 0.00460 |
| 2.00 | 0.30 | 0.00730 |
| 2.50 | 0.35 | 0.01120 |
| 3.00 | 0.40 | 0.01550 |
| 3.50 | 0.50 | 0.02150 |
| 4.00 | 0.60 | 0.03010 |
| 5.00 | 0.70 | 0.04260 |
| 6.00 | 0.80 | 0.06100 |
| 8.00 | 1.00 | 0.09000 |
Schedule 160C – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.80 | 0.20 | 0.00165 |
| 1.00 | 0.25 | 0.00280 |
| 1.50 | 0.30 | 0.00510 |
| 2.00 | 0.35 | 0.00820 |
| 2.50 | 0.40 | 0.01250 |
| 3.00 | 0.50 | 0.01900 |
| 3.50 | 0.60 | 0.02600 |
| 4.00 | 0.70 | 0.03650 |
| 5.00 | 0.80 | 0.05040 |
| 6.00 | 0.90 | 0.07180 |
| 8.00 | 1.20 | 0.12200 |
Schedule XXC – Size Chart (ASME B36.19)
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 0.80 | 0.25 | 0.00210 |
| 1.00 | 0.30 | 0.00350 |
| 1.50 | 0.40 | 0.00670 |
| 2.00 | 0.50 | 0.01080 |
| 2.50 | 0.60 | 0.01650 |
| 3.00 | 0.70 | 0.02350 |
| 3.50 | 0.80 | 0.03200 |
| 4.00 | 1.00 | 0.04900 |
| 5.00 | 1.20 | 0.07200 |
| 6.00 | 1.50 | 0.11200 |
| 8.00 | 2.00 | 0.18000 |
Grades Available
Capillary Tubes are manufactured in a wide range of grades to suit specialized environments:
| Material | Grades |
|---|---|
| Stainless Steel Grades | 304, 304L, 316, 316L, 321, 310 – for medical, food grade, and precision applications. |
| Nickel Alloys | Inconel 600, 625, 718 – for high temperature & corrosive environments. |
| Monel Grades | Monel 400, K500 – for marine and chemical use. |
| Titanium Grades | Gr. 1, 2, 5 – for aerospace and medical devices. |
| Duplex & Super Duplex | 2205, S32750 – for offshore and harsh industrial use. |
| Copper Alloys | Cu-Ni 70/30, 90/10 – for refrigeration, marine, and heat exchanger systems. |
NICKLE ALLOYS
STAINLESS STEEL
DUPLEX & SUPER
TITANIUM ALLOYS
Haynes Superalloys
Inconel
Applications
Capillary Tubes are critical for industries requiring precise control and miniature fluid handling, including:
Medical & Pharmaceutical
- Hypodermic needles and surgical instruments
- Catheters and fluid delivery systems
- Laboratory equipment and chromatography
Instrumentation & Control
- Pressure measuring devices
- Hydraulic and pneumatic control lines
- Thermocouples and sensor lines
Refrigeration & HVAC
- Precision flow control in cooling systems
- Expansion lines for refrigerators and AC units
Chemical & Petrochemical
- Microfluidics and sampling lines
- Chemical dosing and analytical instrumentation
Aerospace & Automotive
- Lightweight fluid transmission systems
- Fuel and brake line applications
Uses of Capillary Tubes
Capillary Tubes are used extensively across multiple industries, including:
Precision Fluid Flow Control
Provides highly accurate fluid flow control in sensitive systems
Miniaturized System Integration
Enables miniaturized solutions for medical, scientific, and industrial uses
Corrosion Resistant Performance
Offers corrosion resistance in harsh chemical or marine environments
Compact Installation Flexibility
Allows tight bending radius for compact installations
Instrumentation & Safety Systems
Supports critical safety and measurement functions in instrumentation
Efficient Supply Chain Integration
Facilitates seamless import and logistics operations for global distribution
Advantages of Capillary Tubes
Superior Surface Finish
Smooth internal bore for optimal flow.
Wide Material Selection
Compatible with a variety of specialized alloys.
Corrosion Resistance
Ideal for aggressive chemicals and marine use.
Lightweight & Strong
Small diameter with exceptional strength to weight ratio.
Customizable Lengths & Forms
Available in straight lengths, coils, and cut pieces.
WHY CHOOSE US?
FAQ's
What is Haynes 242 and why is it important in high-temperature applications?
Haynes 242 (UNS N10242) is an age-hardenable nickel-molybdenum-chromium alloy that combines excellent high-temperature strength with very low thermal expansion. It is widely used in aerospace, chemical, and power generation industries because it provides outstanding dimensional stability, fatigue resistance, and oxidation resistance up to 815 °C (1500 °F), making it ideal for critical operations under extreme conditions.
What are the key properties of Haynes 242 alloy?
Haynes 242 offers a unique combination of properties including exceptional strength at elevated temperatures, the lowest thermal expansion among comparable superalloys, high resistance to oxidation, and excellent fatigue and creep performance. It has a tensile strength ranging from 105 to 218 ksi depending on form, with yield strength up to 140 ksi, and maintains structural stability up to 705 °C (1300 °F). Its weldability and formability, even in the age-hardened condition, make it a versatile alloy for demanding applications.
Which industries and applications commonly use Haynes 242?
Haynes 242 is widely used in aerospace and gas turbines for seal rings, ducting, fuel nozzles, and containment casings. In chemical and petrochemical industries, it is used for HF and fluorine resistant components, reactors, and extrusion screws. It also finds applications in industrial furnaces for press tooling, heat exchangers, and furnace parts, in nuclear and specialty energy sectors for controlled expansion components, and in power generation for boiler superheaters and gas turbine hardware.
What types of Haynes 242 products are supplied by MOKSH TUBES & FITTINGS LLP?
MOKSH TUBES & FITTINGS LLP supplies a wide range of Haynes 242 products including seamless and welded pipes, tubes, sheets, plates, coils, bars, flanges, pipe fittings, fasteners, welding rods, wire mesh, and custom-fabricated components. All products conform to ASTM, ASME, NACE, and international standards, ensuring that industries receive high-quality materials designed for long service life and superior performance.
Why choose MOKSH TUBES & FITTINGS LLP for Haynes 242 materials?
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer and global supplier of Haynes 242, offering deep expertise in exotic alloys, a strong international supply chain, and ISO 9001 certified quality assurance. The company provides customized machining, age treatment, and fabrication services while ensuring timely delivery and full material traceability. With technical support from selection to fabrication, MOKSH TUBES & FITTINGS LLP is a reliable partner for industries operating in extreme environments.
Contact Us
For further information, quotes, or customized capillaries products, Moksh Tubes & Fittings LLP your dependable partner in aluminum alloys.
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