High Precision Stainless Steel Capillary Tube 304/316L Small Diameter Seamless Pipe
Our High Precision Stainless Steel Capillary Tubes are manufactured using advanced cold drawing technology to ensure tight tolerance, smooth surface finish, and stable mechanical performance. Designed for industrial, medical, and instrumentation applications, these small-diameter stainless steel tubes offer excellent corrosion resistance, high strength, and long service life.
With competitive factory pricing and stable export quality, our products are widely supplied to Malaysia, Thailand, Vietnam, Indonesia, Philippines and Singapore markets.
Technical Specifications
| Specification |
Details |
| Outer Diameter |
0.3mm - 20mm |
| Wall Thickness |
0.05mm - 2.0mm |
| Length |
500mm - 6000mm or Customized |
| Surface Finish |
Bright Annealed (BA) / Polished |
| Standard |
ASTM A269 / A213 / EN / JIS |
| Production Method |
Cold Drawn / Seamless |
| Tolerance |
±0.01mm - ±0.05mm |
| Packaging |
Plastic sleeve + End caps + Export bundle |
Key Features
- High precision outer diameter and wall thickness
- Bright Annealed (BA) smooth surface finish
- Excellent corrosion resistance
- Strict tolerance control
- Clean inner wall for fluid transfer
- Customized size available
- Individual protective packaging for export
Applications
- Medical & Healthcare: Hypodermic needles, surgical instruments, dental tools, endoscopy components
- Automotive: Fuel injection lines, hydraulic brake lines, pressure sensors, EGR systems
- Instrumentation: Gas chromatography, pressure gauges, temperature sensors, thermocouple sheaths
- Aerospace & Defense: Hydraulic control lines, cooling systems
- General Industry: Micro-bore piping, jewelry manufacturing, model engineering
Frequently Asked Questions
What is the minimum order quantity (MOQ)?
We accept small MOQs. For standard sizes (e.g., OD 1mm-6mm), the MOQ can be as low as 50-100 meters. For custom sizes or special tolerances, please contact our sales team for specific MOQ details.
Can you cut the tubes to a specific length for me?
Yes. We offer custom cutting services. We can cut the tubes to your exact required length (e.g., 20mm, 50mm, 100mm) with precision cutting and deburring to ensure a clean, burr-free edge, ready for your assembly line.
How are the tubes packaged to prevent damage during shipping?
To maintain surface finish and dimensional integrity, we package the tubes in bundles with plastic caps on both ends. For small diameter tubes, we often use individual plastic sleeves or spool winding to prevent bending and scratching. For air freight orders, we use strong cartons or wooden cases.
Can you provide polished or bright annealed surface finishes?
Yes. We can supply the tubes in various finishes: Annealed & Pickled: Standard finish, oxide layer removed. Bright Annealed (BA): High gloss, smooth surface (common for medical and sanitary use). Polished: External polishing (e.g., 180 grit, 400 grit) for aesthetic or anti-fouling requirements.
What is your lead time?
For standard stock sizes, lead time is approximately 7-15 days. For custom sizes or large bulk orders, lead time is typically 20-30 days after order confirmation and deposit receipt.