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Custom Medical Tubes 316L Stainless Steel Precision

Medical Machining Parts
January 23, 2026
Category Connection: Medical Machining Parts
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Tags:
#Medical Needle #CNC Milling Parts #Cnc Medical Parts
Brief: We show the practical steps and results so you can judge suitability quickly. This video provides a detailed walkthrough of the manufacturing process for Customized 316L Stainless Steel Capillary Medical Tube Spare Parts. You will see how precision cold-drawing, laser slot milling, and high-resolution etching create these high-precision instruments with integrated visual scales for exact fluid measurement in medical and laboratory applications.
Related Product Features:
  • Manufactured from 304 or 316L stainless steel for general purpose or enhanced corrosion resistance and biocompatibility.
  • Features a precision-ground tip in lancet, pencil point, or blunt configurations for clean penetration or non-coring applications.
  • Includes a longitudinally slotted window with laser-etched graduations for direct visual micro-volume reading in µL, nL, or mm.
  • Undergoes full electropolishing and passivation for a smooth, inert, and highly corrosion-resistant fluid contact surface.
  • Precision cold-drawn to achieve ultra-fine inner and outer diameters with a mirror-like internal surface finish.
  • Designed for microinjection, chromatography, ophthalmic surgery, and pharmaceutical R&D requiring nanoliter-volume control.
  • Available with optional NIST-traceable volumetric calibration and supplied non-sterile or sterilized for various applications.
  • 100% inspected for dimensions, slot clarity, graduation accuracy, and tip sharpness, packaged in cleanroom conditions.
FAQs:
  • What are the key differences between 304 and 316L stainless steel for these capillary tubes?
    304 stainless steel is suitable for general purpose applications, while 316L offers enhanced corrosion resistance, making it the preferred choice for prolonged contact with biological buffers, salts, and fluids due to its superior biocompatibility.
  • How is the volumetric scale on the needle created and how accurate is it?
    The scale is created by high-resolution laser etching permanent graduation marks directly onto the needle body adjacent to the slotted window. The scale accuracy is typically ±2% to ±5% of the indicated volume, depending on inner diameter consistency, and optional NIST-traceable calibration is available for critical applications.
  • What sterilization methods are compatible with these medical capillary tubes?
    These capillary tubes are compatible with standard sterilization methods including autoclave (for reusable applications), gamma irradiation, and ethylene oxide (ETO). They can be supplied non-sterile or pre-sterilized according to your requirements.
  • What types of tip configurations are available and what are their applications?
    Three main tip configurations are available: Lancet points with sharp bevel for piercing, Pencil points for non-coring applications to preserve septa integrity, and Blunt polished tips. The specific geometry is chosen based on the procedure requirements such as tissue penetration or sample aspiration.
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