Precision CNC for Custom Stainless Steel Capillary Tubes

Delivering Unrivaled Accuracy and Consistency with our Expertise in Stainless Steel Capillary Tubes Manufacturing and Customized CNC Machining Solutions.

Overview of Stainless Steel Capillary Tubes

Stainless Steel Capillary Tubes, a hallmark of precision and quality, are small-diameter tubes made from stainless steel. These tubes are renowned for their durability, resistance to corrosion, and ability to withstand high pressures and temperatures, making them suitable for a wide range of applications across numerous industries.

Featuring a smooth interior surface and a tight tolerance control, they are ideal for use in medical, aerospace, automotive, instrumentation, and chemical industries, among others. They serve essential roles in processes like liquid or gas transfer, precise measurement, and more.

Our stainless steel capillary tubes at AT-Machining are meticulously crafted through a rigorous process of CNC machining, ensuring every tube meets the highest standards of precision and quality. With our commitment to customization, we provide tubes in various specifications to suit the unique requirements of each client perfectly.

Processing Technology of Precision Stainless Steel Capillary Tube

Our comprehensive CNC machining services include design, prototyping, and full-scale production. With a focus on manufacturing top-notch stainless steel capillary tubes, we use our vast experience and technical expertise to provide you with the best solution for your unique requirements.

Swiss machining is renowned for its ability to create parts with extremely tight tolerances. This is crucial for capillary tubes, which often require precise internal and external diameters.

Capillary stainless steel tubes undergo external grinding to guarantee consistent diameter and absolute straightness for each tube.

Quality inspection involves checking dimensional accuracy, surface finish, and material properties of stainless steel capillary tubes.

precision customized stainless steel capillary tubes

Stainless Steel Materials For Capillary Tubes

Stainless steel capillary tubes are often manufactured using several specific grades of stainless steel due to their superior corrosion resistance, strength, and fabrication characteristics. Here are some of the commonly used grades:

AT-Machining specializes in stainless steel capillary manufacturing

At AT-Machining, our passion for precision manufacturing shines through in every project we undertake. As a leading CNC machining service provider in China, we utilize cutting-edge technology and extensive expertise to deliver exceptional quality and value.

Our commitment to understanding each client’s unique needs allows us to provide customized solutions that meet even the most demanding specifications. Whether your components require milling, turning, Swiss lathe work, specialty coatings, or other finishing processes, our skilled team leverages the latest advancements to achieve unparalleled accuracy and repeatability.

With every job, our goal remains to build lasting partnerships with our clients by transforming their product visions into flawlessly finished parts. When you collaborate with us, you can trust that our obsessive attention to detail will accelerate your success through enhanced productivity, reliability, and innovation.

Advantages of AT-Machining for Stainless Steel Capillary Tube

With our advanced capabilities and stringent quality management, AT-Machining is the ideal partner for your stainless capillary tube needs. Contact us today to discuss your specific application.

precision engineering

Precision Engineering

Our extensive CNC machining expertise allows us to hold extremely tight tolerances, essential for capillary applications. We routinely achieve tolerances within 0.002mm for hole dimensions and 0.01mm for linear dimensions.

stainless steel material options

Material Options

We machine capillary tubes from a wide selection of stainless steel alloys, including 304, 316, 321, and others to meet different strength and corrosion requirements.

surface finishes

Surface Finishes

We can deliver exceptional surface finishes under 3.2 Ra for the inner bore of tubes, providing the smoothness needed for fluid and gas flow. A range of finishing processes like honing and polishing are used.

cnc machine shop


Our capillary tubes are machined and packaged in a cleanroom environment to prevent contamination from particulates.

quality control

Quality Control

100% inspection of critical tube dimensions combined with sample testing for surface finish, deburring, and cleanliness ensures complete quality control.

rapid production & delivery

Quick Turnaround

Our scale allows us to manufacture stainless steel capillary tubes with short lead times, helping you meet tight project deadlines.

key applications for stainless steel capillary tubes

Tailored CNC Machining & Finishing Solutions for Diverse Industry Needs

analytical chemistry

Analytical Chemistry

Gas Chromatography, Stainless steel capillary tubes are a critical component in gas chromatography systems, which are used to separate and analyze compounds. The tubes need to have extremely smooth inner bores and tight dimensional tolerances to precisely control gas flow rates for accurate sample analysis. Common sizes range from 0.1mm to 0.53mm inner diameter.

medical devices

Medical Devices

In medical applications like insulin pens, stainless steel capillary tubing handles and delivers very small volumes of fluids. The tubes must resist corrosion and have a non-reactive inert surface for drugs and solutions. Precision tolerances and reliable performance are essential.

refrigeration systems

Refrigeration Systems

Capillary tubes regulate the flow of refrigerants in refrigerator and HVAC heat exchangers. They are designed to withstand high pressure fluctuations and flow rates. Controlled inner diameter tolerances are critical for proper refrigerant metering.

analytical instrumentation

Analytical Instrumentation

Spectrophotometers, mass spectrometers and other lab equipment often use capillary tubing to move samples and reagents. The tubes need to avoid contamination of the sample and provide dimensional consistency.

flow restrictors

Flow Restrictors

The small diameter of capillary tubes provides a fixed resistance to laminar fluid flow in devices like chromatography systems, infusion pumps, and more. This allows a constant, regulated flow rate.

fuel cells

Fuel Cells

Even gas and liquid distribution across fuel cell membranes is enabled by the capillary tube network. Stainless steel offers the needed durability and corrosion resistance for fuel cell reactants.

Why Choose Our Custom Stainless Steel Capillary Tubes

Saving Your Cost

You will save 30-50% of the cost because of our efficient production capacity and cost control.

High Precision Tolerances

Offering tolerances range from +/-0.001′′ to 0.005′′, depending on client specifications. We are experts in producing custom components.

On-demand Production

Our CNC milling services will support you from 1 pcs to 10k+ pcs, no matter prototype, low volume manufacture, or mass production.

Quality Assurance

As an ISO 9001:2015 certificated manufacturing company, we offer SGS, RoHS, material certifications, and inspection report for our customers.

We Are Here To Solve Your ProblemAnd Delivery Your Needs

custom stainless steel capillary tubes

Custom Stainless Steel Capillary Tubes FAQs

Custom stainless steel capillary tubes have applications in gas chromatography, medical devices, analytical instrumentation, and more. They can be used whenever precise dimensions and tight tolerances are needed.

The size range is quite broad. Tube inner diameters can range from around 0.1 mm to 6 mm. Lengths are customizable as well, from a few centimeters up to several meters.

Tubes are chemically cleaned and rinsed to remove oils and debris from manufacturing. They are carefully packaged to avoid damage in transit.

Manufacturing processes include laser welding, CNC machining, extrusion, and more. The method used depends on the dimensions and metals required.

Lead times range from 1-2 weeks typically, depending on complexity. Quick turnaround options may be available for prototyping or other time-sensitive projects. Expedited production and shipping can often be arranged as well.

We are ISO 9001 certified and supply materials meeting ASTM and ASME standards. We can provide material certifications and inspection reports as well.