Products Description
Our Advantages
1. Precise Dimensions
Our 316 Stainless Steel Capillary Tubing is manufactured using a cold-drawing process, combined with laser measurement and CNC straightening, to ensure that the tube dimensions meet standard specifications or customer requirements, with a tolerance accuracy of ±0.01 mm. This makes it ideal for microfluidic flow control, needles, guidewires, and analytical tubing.
2. Surface Quality
Our capillaries undergo pickling and passivation, followed by bright annealing and internal and external polishing, to ensure a high degree of surface finish and eliminate contaminant residue. Additionally, the tube ends are chamfered to ensure a burr-free, smooth surface.
3. Strong Corrosion Resistance
Our tubing is made of 316/316L material, and each TORICH tube undergoes chemical composition testing to ensure compliance with standards. 316 stainless steel contains molybdenum, providing excellent corrosion resistance, resisting corrosion from saline and disinfectants, and performing exceptionally well in repeated sterilization cycles.
4. Weldability and Formability
Our tubing boasts excellent weldability, compatible with laser welding, TIG welding, resistance welding, and other welding technologies. The 316L material, in particular, minimizes carbide precipitation during welding, preventing intergranular corrosion. It supports micro-welding, crimping, bending, and assembly operations, making it ideal for ultra-thin-wall and precision medical applications.
5. Packaging and Shipping
We offer various packaging options, including plastic caps, plastic films, woven bags, and wooden crates, to prevent damage or contamination during transport. We provide sea, land, and air freight services.
6. Customization Services
We offer customized outer/inner diameters, special cutting lengths, customized surface treatments such as electropolishing and bright annealing, and customized processing services such as micro-bending, end forming, grooving, perforation, and slitting.
application areas
- Medical Devices: Catheters, subcutaneous injection systems, endoscopic instruments, etc.
- Diagnostic and Laboratory Equipment: Chromatography tubing, high-pressure instrumentation lines, and gas analysis systems, etc.
- Pharmaceutical Processing: High-purity fluid delivery, precision dispensing systems, etc.
- Biomedical: Sensor housings, implantable device components, etc.
Chemical Composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| 316 | ≤0.08 | ≤2.0 | ≤0.045 | ≤0.03 | ≤1.0 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | ≤0.10 |
| 316L | ≤0.03 | ≤2.0 | ≤0.045 | ≤0.03 | ≤1.0 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | ≤0.10 |
Mechanical Properties
| Property | 316 | 316L |
| Tensile Strength (MPa) | ≥515 | ≥485 |
| Yield Strength 0.2% (MPa) | ≥205 | ≥170 |
| Elongation (%) | ≥40 | ≥40 |
| Hardness (HB) | ≤217 | ≤217 |
| Modulus of Elasticity (GPa) | ~193 | ~193 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| 304 / 304L | Lower cost; suitable for general-purpose instruments with low chloride exposure. |
| 317L | Higher molybdenum content provides stronger resistance to pitting corrosion. |
| 904L | Super austenitic stainless steel offers excellent corrosion resistance, suitable for corrosive media. |
| Inconel 600,625 | Suitable for high-temperature or chemically corrosive environments. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
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