SUS304 X5CrNi18-9 Medical Grade Stainless Steel Capillary Tube For Surgical Devices

The Medical Grade Stainless Steel Capillary Tube is a high-precision, small-bore tubular product produced from a specific austenitic stainless steel grade intended for medical and surgical applications. This capillary tube is mainly manufactured by SUS304 material due to its good ductility, toughness, and further corrosion resistance. SUS304 stainless steel capillary tubes are generally used and processed for medical needle tubes, such as injection needle tubes, infusion needle tubes, blood collection needle tubes, mesotherapy needle tubes, insulin needle tubes, and so on. Our factory can provide stainless steel capillary tubes from 10G to 34G, that is, 0.18mm to 3.4mm, or other required diameter sizes. The length can be cut into 0.01m - 2m in straight type. If the client have requirements for needle tubes, we can also customize as we have dozens of auto and semi-auto needle-tip-grinding machines. We provide medical capillary tubes and needle tubes with the best quality and most competitive prices.

Key Advantages:

• Excellent Corrosion Resistance
• High Biocompatibility: The passive surface is generally inert and non-toxic, suitable for transient or permanent contact with tissue and bodily fluids.
• Good Mechanical Strength & Ductility: Can be drawn to very thin walls, shaped, and pointed (for needles) without cracking.
• Ultra-High Precision: consistent fluid flow in needles, precise deployment of catheters.
• Superior Surface Finish: Can minimizes tissue trauma during insertion.
• Consistent Material Properties: Guaranteed tensile strength, yield strength, and elongation per ISO 9626.
• Good Cleanliness: Manufactured in cleanroom-like conditions to minimize particulate contamination. Often supplied clean-room packed.

Regular Sizes:

• Outer Diameter: Typically ranges from 0.15 mm up to about 6.0 mm. Common medical needle sizes are in the 0.18 mm to 3.4 mm range (corresponding to approx. 34G to 10G).
• Wall Thickness: Very thin, typically ranging from 0.1 mm (0.004") to 0.5 mm (0.020").
• Length: Supplied in straight lengths, commonly from 0.01 meter to 2.0 meters. It can also be supplied in coils for very small diameters.

Applications:

Medical & Surgical Applications:

• Hypodermic, Biopsy, and Surgical Needles: The primary application. The tube is cut, pointed, and ground to form the needle cannula.
• Catheter Tubes: For urinary, vascular, drainage, and balloon catheters.
• Guidewires: As the outer sheath or component.
• Endoscopic & Laparoscopic Instrument Shafts: Used in rigid or semi-rigid devices.
• Implantable Device Components: Housings or capillaries for medicine delivery pumps, neurostimulators, etc.
• Orthodontic and Dental Instruments: As wires and brackets.
• Surgical Staples and Clips.
• Cannulas for Insufflation, Aspiration, or Irrigation.

Non-Medical (Precision Industrial) Applications:

• Precision Fluid Handling: Chromatography systems, inkjet printer heads, precision dosing systems.
• Sensor and Probe Housings: For chemical or temperature sensors.
• Small Bore Hydraulic or Pneumatic Lines: In precision machinery and robotics.
• Electrical Conduits: For protecting fine wires in harsh environments.
• Watchmaking and Precision Mechanics: As axles, pivots, or decorative elements.