Huizhou Pengchengrui Technology Co., Ltd.

Nickel titanium alloy high-temperature capillary tubes, with their characteristics of super elasticity, shape memory, high temperature resistance, and corrosion resistance, have a large number of mature applications in medical, aerospace, precision instruments, industrial automation and other fields. The following are six typical cases summarized by the editor:

1、 Medical minimally invasive interventional instruments

（1）Cardiovascular intervention with hypotube/catheter

As a "delivery channel" for interventional surgery, this specification of capillary tube is laser engraved and polished to make a hypotube, which is used for coronary and peripheral vascular interventional surgery to deliver instruments such as stents, balloons, and guide wires. Its super elasticity can smoothly pass through the bends of blood vessels, and its shape memory can restore its preset shape at body temperature, accurately locating the lesion site; Thin walled and large lumen ensures smooth delivery of drugs/contrast agents, high temperature resistance and compatibility with ethylene oxide sterilization, and biocompatibility meets medical standards.

（2） Neurointerventional microcatheter/stent

Used for neurointerventional treatment of cerebral vascular stenosis, aneurysms, etc., making microcatheters or intracranial stents.

（3）Dental orthodontic archwire/bracket components

Processed into orthodontic archwire or bracket connecting tube, utilizing shape memory effect to continuously release soft orthodontic force at oral temperature, gradually correcting tooth alignment. Compared to traditional stainless steel wire, the superelasticity of nickel titanium capillary tube can reduce oral discomfort, adapt to dental high-temperature disinfection process with high temperature resistance, resist corrosion and saliva erosion, and improve orthodontic effect and comfort.

Nickel titanium alloy high-temperature capillary tubes

2、 Aerospace Thermal Control and Structural Components

（1）Spacecraft thermal control heat pipe/microchannel cooling

Loop heat pipes or microchannel cooling systems for electronic devices used in satellites and spacecraft. Nickel titanium alloy is resistant to high temperatures (up to 300 ℃+) and corrosion. The capillary tube serves as a transport channel for heat pipe working fluids (such as ammonia and water), and the thin-walled structure improves heat conduction efficiency. The shape memory can automatically adjust the pipe diameter when the temperature changes, optimize the flow of working fluids, and ensure the thermal balance of spacecraft under extreme temperature differences in space.

（2）Flexible connectors/sensors for aircraft engines

Make flexible joints for engine pipelines or protective pipes for temperature/pressure sensors. When the engine is working, it experiences high temperatures and intense vibrations. The super elasticity of this capillary tube can absorb vibration impacts, resist high temperatures and gas high temperatures, resist corrosion and aviation fuel and exhaust gas erosion, and accurately transmit pressure/temperature signals to ensure stable engine operation.

3、 Industrial precision and automation field

（1）Precision instrument temperature measurement/fluid delivery pipe

Applied to high-temperature industrial furnaces, semiconductor equipment, chemical reaction vessels, and other scenarios. As a protective tube for temperature measuring elements (wrapped around thermocouples), it isolates high temperature and corrosive media while rapidly conducting temperature; Alternatively, it can be used as a precision fluid transport tube to transport high-temperature chemical reagents and high-purity gases. The thin wall uniformity ensures stable flow rate, and the shape memory can automatically compensate for deformation during temperature fluctuations, avoiding leakage and adapting to high-precision production needs such as semiconductors and chemicals.

Huizhou Pengchengrui specializes in customized nickel titanium alloy high-temperature capillary tubes, starting from smelting and undergoing deep processing throughout the entire industry chain. The tubes have an outer diameter of 3.35mm and a wall thickness of 0.2mm, and support customization. Huizhou Pengchengrui has three major categories of nickel titanium alloy wires, pipes, and plates. We welcome cooperation from major universities and research institutions to solve customers' technical problems with nickel titanium alloys.