Ultra-Fine 304 Stainless Steel Capillary Tube Minimum OD 0.3 mm | Precision Small-Diameter Stainless Steel Tubing custom
Product Overview
Ultra-fine 304 stainless steel capillary tube is manufactured for high-precision applications requiring extremely small diameters, smooth internal surfaces, and excellent corrosion resistance.
With a minimum outer diameter of 0.3 mm, this tubing is widely used in medical equipment, instrumentation, sensors, micro-fluidic systems, and precision measurement devices.
Other dimensions, custom OD / wall thickness / length are available upon request.
Key Features
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Ultra-Small Diameter: Minimum OD as small as 0.3 mm, with tight tolerances.
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Customizable Dimensions: OD, ID, wall thickness, hardness, and length can be fully customized.
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Precision Manufacturing: Smooth inner wall, consistent wall thickness, and excellent dimensional accuracy.
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Corrosion Resistant: Ideal for mild chemicals, water, gases, and medical-grade environments.
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High Strength & Flexibility: Suitable for bending, forming, and secondary processing.
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Clean & Bright Surface: Available in bright-annealed or polished finish.
Technical Specifications
| Item | Value |
|---|---|
| Material | 304 Stainless Steel |
| Tube Type | Seamless / Welded (Bright Annealed) |
| Minimum Outer Diameter | 0.3 mm |
| Available OD Range | 0.3 mm – 12 mm (other sizes customizable) |
| Wall Thickness | 0.05 mm – 1.0 mm (custom available) |
| Surface | Bright / Polished / Clean |
| Tolerance | ±0.005–0.02 mm |
| Length Options | Coil / 1–6 m straight length / custom-cut lengths available |
| Condition | Annealed / Bright Annealed / Hard |
Supply Capability
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Monthly Capacity: ≥ 10 tons
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Lead Time: 5 – 10 working days
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Custom Service: Fully customizable dimensions and packaging
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OEM / ODM: Private label, special sizes, precision cut lengths
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Export Regions: Europe | Southeast Asia | Middle East | North America
Product Attributes / Features
| Attribute | Description |
|---|---|
| Grade | SS304 / 1.4301 |
| Material Type | Austenitic Stainless Steel |
| Minimum OD | 0.3 mm |
| Custom Sizes | OD, ID, thickness, and length fully customizable |
| Tube Form | Seamless tube / Welded tube / Capillary coil |
| Surface Condition | Bright, polished, oxide-free |
| Mechanical Strength | High tensile and good fatigue resistance |
| Thermal Properties | Good heat resistance up to 870°C |
| Application Field | Medical / Sensors / Electronics / Precision Instruments |
| Packaging | PE bag + Plastic reel + Carton / Wooden case |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.