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Customized Filling Needle Solutions with 316L Stainless Steel and CNC Milling



The 316L Stainless Steel Capillary Tubing Medical Component CNC Milled Filling Needle is a precision-engineered instrument for sterile transfer, dispensing, or micro-dosing of liquids in medical and lab settings. Using 316L stainless steel capillary tubing, it undergoes CNC milling for a robust needle with a precise tip, controlled lumen, and custom features. Designed for high corrosion resistance, biocompatibility, and performance with sensitive fluids.
| Category | Feature | Specifications |
|---|---|---|
| Material | Primary Material | 316L Stainless Steel Capillary Tubing (ASTM A269). ISO 10993 compliant. |
| Needle Tip | Tip Types | Sharp Bevel (Hypodermic), Blunt/Polished (Cannula), Side-Bore/Deflected. |
| Specifications | Outer Diameter (OD) | 0.5 mm (25G) to 2.0 mm (14G). |
| Specifications | Inner Diameter (ID) | Customizable: 0.2 mm to 1.5 mm. |
| Surface Finish | Internal Lumen | Electropolished to Ra ≤ 0.2 µm. Prevents protein adhesion. |
| Tolerances | Critical Dimensions | OD/ID: ±0.02 mm; Length: ±0.1 mm. |
| Compliance | Sterilization | Validated for Gamma Irradiation and Ethylene Oxide (EtO). |



Our facility has obtained the GB/T 19001-2016/ISO 9001:2015 quality system certification and GB/T 42061-2022/ISO 13485:2016 medical device quality system certification. We focus on the research and production of non-standard metal medical device precision parts. Equipped with dozens of high-precision engraving lathes, CNC numerical control centering machines, and automatic lathes, we provide secondary processing for stainless steel capillary tubes and thin-walled tubes.



Our core strength lies in the combination of medical-grade 316L material and advanced CNC milling processes. This allows for the creation of complex, integrated components beyond simple cut-and-polished needles. With a dedicated R&D team of senior engineers, we ensure each product meets the strict precision requirements of the medical device industry, providing high-precision customization for various fluid path requirements.
Ryu Medical