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Medical-grade stainless steel hypotubes and micro-tubing are fundamental structural components for minimally invasive catheter shafts, interventional delivery systems, and precision surgical instruments. Cold-drawn primarily from high-tensile 304, 304V, or 316L stainless steel, hypotubes provide the optimal balance between proximal pushability, kink resistance, and distal flexibility.

Key Technical Advantages of Medical Hypotubes

1:1 Torque Transmission & Pushability: Delivers high column strength and torsional rigidity, allowing clinicians to transmit axial force and rotation directly from the proximal handle to the distal tip without energy loss or buckling.

Laser-Cut Distal Flexibility: Engineered with spiral, pitch-variable, or puzzle-pattern laser cuts, allowing a rigid metallic shaft to smoothly transition into a highly flexible, trackable segment for navigating tortuous anatomy.

Ultra-Tight Tolerances: Manufactured via precision cold-drawing to maintain tight outer diameter (OD), inner diameter (ID), and wall thickness tolerances, ensuring consistent fluid flow rates and smooth passage of inner guidewires or tools.



Specifications & Custom Fabrication Capabilities

Materials: SUS304,　SUS316L, and SUS316L, etc.

Dimensional Range: Outer Diameters (OD) typically ranging from φ0.20 mm to φ3.00 mm with ultra-thin wall options down to 0.025 mm.

Secondary Micro-Processing:

Laser Cutting: Customized helical slots and pitch variations for tailored bend radii.

End Forming: Flaring, swaging (tapering), skiving (angle cuts), beveling, and micro-hole drilling.

Surface Treatment: Electropolishing, passivating,


Target Medical Applications
・PTCA & PTA Rapid-Exchange (Rx) Balloon Catheter Shafts
・Neurovascular & Cardiovascular Delivery Systems
・Structural Heart & TAVI/TAVR Delivery Shafts
・Electrophysiology (EP) & Ablation Catheters
・Endoscopic Precision Tools & Biopsy Cannulas

Supply of Medical-Grade SUS304V & Specialty Alloys

SUS304V (Vacuum Arc Remelted): Premium vacuum-melted stainless steel engineered for critical medical applications. It provides superior cleanliness, low non-metallic inclusions, and enhanced fatigue resistance.


SUS316L & Non-Magnetic Alloys: Options available for implant-grade applications and ultra-non-magnetic grades (magnetic permeability ≤ 1.01) designed specifically for MRI-compatible medical environments.


Key Technical Features & Capabilities

Ultra-Fine Wire Drawing: Precision drawing capabilities down to ultra-fine diameters ranging from φ0.011 mm to φ0.060 mm, enabling micro-braiding, micro-coils, and space-constrained device shafts.

High Torque & Pushability: Advanced processing achieves up to 20% higher tensile strength and over 23% higher torque transmission compared to standard SUS304-WPB wire—critical for catheter guidewires, stylets, and medical needles.

Superior Inherent Straightness: Precision-straightened wire with a bright, defect-free surface finish that eliminates manual bend corrections and optimizes automated spring coiling and component forming.

Straighten wires are also available.
SUS302/304 for suture needle application are also available.

Medical-Grade Nitinol (Ni-Ti) Wires & Tubes for Next-Generation Medical Devices

Engineered for minimally invasive surgical instruments, medical-grade Nitinol (Ni-Ti) wires and tubes deliver exceptional super-elasticity, shape memory, and biocompatibility. From high-pushability vascular guidewires to ultra-smooth catheter lumens, these high-precision materials solve key mechanical challenges in complex anatomical navigation.


【Precision Medical Nitinol Tubes】

Ultra-Smooth Inner Surface Catheter Tubes: Advanced internal polishing achieves an inner surface roughness guaranteed at Ra ≤ 0.1 μm (reaching as smooth as 0.02 μm). This drastically reduces frictional resistance when passing micro-guidewires, implants, or fluids through the lumen.

Stent & Heart Valve Frame Tubes: Manufactured to strict ASTM F2633 standards with tight tolerances for roundness and wall concentricity. Ideal for laser-cutting self-expanding structural scaffolds used in TAVI/TAVR valve frames, peripheral vascular stents, and occluders.



【High-Performance Nitinol Wires】

High-Pushability & High-Rigidity Alloys: Advanced binary and ternary (Ni-Ti-Co) alloys providing up to three times the stiffness of standard Nitinol. Engineered with narrow stress hysteresis to prevent "whip" rotation and ensure maximum torque transmission in winding anatomy.

Radiopaque Pt-Cored Wires: Integrates a high-density Platinum core within a super-elastic Nitinol shell, delivering clear X-ray visibility under fluoroscopy without sacrificing kink resistance.

Standard Super-Elastic Wires: Fully compliant with ASTM F2063 standards, offering uniform elasticity, extreme fatigue resistance, and customizable surface finishes (pickled, oxide-free, or thin-oxide).



Rapid Prototyping & Customization Flexible Engineering: Fully customizable parameters, including transformation temperatures ($A_f$ point), tensile strength, outer diameters, and wall thicknesses. Agile Development Support: Dedicated quick-turn prototyping programs and stock tube inventories enable R&D teams to accelerate design iterations and shorten time-to-market.