Precision Stainless Steel 304 316L Capillary Tube , Customized Flared Tube For Medical Device

Stainless steel capillary tubes are precision tubes with tight tolerance. These tubes are generally welded and cold drawn from thin stainless steel strips. For the material selection, capillary tubes are usually produced by stainless teel 304 and 316 owing to their good corrosion resistance, especially used for madical applications. There are lots of shapes of stainless steel capillary tubes according to different applications. For example, the end shapes can be flared, bent, Swaged, slotted, chamfered, and so on. All of capillary tubes can be customized according to customers' drawings or samples. And we can also design for customers according to their provided sizes.

Material Selection Considerations:

• 316L: Mandatory for implants or devices exposed to harsh bodily fluids (e.g., cardiovascular or orthopedic applications).
• 304: Suitable for non-implantable, cost-sensitive devices (e.g., external diagnostic tools) where corrosion resistance is less critical.
• Sterilization Compatibility: Both grades withstand autoclaving, gamma radiation, and ethylene oxide.

Key Features:

• Biocompatibility: Complies with ISO 10993 standards, suitable for prolonged bodily contact.
• Sterilization Compatibility: Autoclavable (up to 135°C), gamma irradiation, and ethylene oxide (EtO) resistant.
• Corrosion Resistance: Passivated surfaces enhance durability, especially critical for 316L in saline or acidic environments.
• Mechanical Properties: High tensile strength (≥515 MPa for 316L), hardness (HRB 95 max), and MRI compatibility.

Flared Capillary Tube Design:

• Capillary Dimensions: Small inner diameters (typically <5 mm) for precise fluid/gas transfer (e.g., drug delivery, sensors).
• Flared Ends: Facilitate secure, leak-proof connections to fittings, valves, or catheters without requiring additional connectors.

Types:

• Material Grades: Options between 304 (cost-effective) and 316L (premium medical-grade).
• Flare Configurations: Single/Double flared ends; custom flare angles (e.g., 37° for luer lock compatibility).
• Coatings/Finishes: Optional hydrophilic coatings or electropolishing for specialized applications.

Applications:

• Surgical Instruments: Biopsy needles, orthopedic pins, and microsurgical tools.
• Drug Delivery: IV catheters, insulin pens, and infusion pumps.
• Diagnostic Equipment: Endoscopes, chromatography systems, and microfluidic devices.
• Implants: Used in stent delivery systems or neurovascular devices.
• Laboratory Use: Precision fluid handling in analyzers or dialysis machines.