Stainless Steel Needle Tube for Precision Applications
1. Product Overview
Stainless steel needle tube is a high-precision tubing solution designed for applications requiring extremely small diameters, fine flow control, and superior surface finish. Engineered for critical environments, these tubes are widely used in medical devices, laboratory instruments, analytical systems, and high-precision industrial applications.
With excellent performance in marine environments, chemical processing systems, and heat exchanger micro-channel applications, stainless needle tubes provide reliable operation under corrosive and high-pressure conditions. Their ultra-thin walls and consistent inner diameter make them ideal for applications involving fluid injection, sampling, and micro-flow control.
Manufactured through advanced cold drawing and polishing processes, stainless steel needle tubes offer high dimensional accuracy, smooth internal surfaces, and outstanding mechanical strength. Whether for precision medical instruments or industrial microfluidic systems, these tubes ensure stability, cleanliness, and long service life.
2. Application Areas
- Medical Devices & Hypodermic Needles
Used in syringes, surgical instruments, and minimally invasive medical tools
- Laboratory & Analytical Equipment
Applied in chromatography systems, sampling probes, and precision instruments
- Oil & Gas Micro-Injection Systems
Used in chemical injection and sampling lines for precise fluid delivery
- Marine & Seawater Monitoring Systems
Suitable for sensors and micro-fluid systems exposed to seawater environments
- Heat Exchanger Micro-Tube Systems
Used in compact heat exchangers requiring precise fluid channels
- Electronics & Semiconductor Industry
Applied in high-purity gas and liquid delivery systems
3. Product Features
- Ultra-small diameter with high precision tolerances
- Smooth internal surface for accurate fluid control
- Excellent corrosion resistance in chemical and marine environments
- High strength and durability despite thin wall thickness
- Clean, burr-free finish suitable for critical applications
- Customizable sizes and tight tolerance control
- Suitable for high-pressure micro-flow systems
4. Technical Specifications
| Parameter |
Range |
| Outer Diameter (OD) |
0.2 mm – 6 mm (≈ 0.008″ – 1/4″) |
| Wall Thickness (WT) |
0.05 mm – 1 mm (≈ 0.002″ – 0.04″) |
| Length |
Up to 6000 mm (≈ 20 ft) or coils |
| Standards |
ASTM A213 / A269 / A312, ASME SA213, EN, JIS |
| Grades |
304 / 304L / 316 / 316L / 321 / Monel 400 / K500 |
5. Manufacturing Process
Melting (EAF/VOD) → Billet Preparation → Cold Drawing → Precision Annealing → Straightening → Polishing (Internal & External) → Cleaning → Inspection (Dimensional & NDT) → Packaging
Strict quality control ensures high cleanliness, precision, and compliance with international standards.
6. FAQ
Q1: What is your MOQ for stainless steel needle tubes?
A: Standard MOQ is around 500 kg, but smaller quantities can be arranged for initial testing.
Q2: What is your delivery time?
A: Typically 20–35 days depending on size and tolerance requirements.
Q3: Can you achieve very tight tolerances for needle tubes?
A: Yes, we specialize in ultra-precision tubing with strict dimensional control.
Q4: Are these tubes suitable for high-purity or medical applications?
A: Yes, we offer clean surface finishing and polishing suitable for medical and laboratory use.
Q5: Can these tubes be used in seawater or chemical environments?
A: Yes, especially with 316L and Monel grades, providing excellent corrosion resistance.
7. Conclusion
Looking for high-precision stainless steel needle tubes for critical applications? Contact us today for customized solutions, consistent quality, and reliable delivery worldwide.
