1. Specifications and Application Scenarios

The H₂O₂ Transfer Needle (Hydrogen Peroxide Transfer Needle) is available in various specifications tailored to different equipment types, flow rates, and operating environments.

Key differences lie in the needle tube diameter, overall length, thread interface, and internal flow channel design.

(1) Needle Tube Size

• Small-bore needles are used in precision dosing or laboratory-grade sterilization systems, emphasizing uniform flow and excellent sealing.

  
  

• Large-bore needles are designed for industrial-scale H₂O₂ delivery, capable of handling higher flow rates and operating pressures.

  
  

(2) Base Dimensions

The base typically features a hexagonal body with threaded interfaces, customizable in pitch and size according to standards such as M-series or UNF-series threads.

This allows secure integration with sterilizers, tubing systems, or reaction chambers.

(3) Needle Length and Structure

For deep or directional injection, needle length and outlet position can be customized to match the device geometry, enabling precise H₂O₂ delivery and controlled diffusion.

Thanks to diversified specifications, the H₂O₂ Transfer Needle achieves seamless compatibility and consistent performance across both laboratory and industrial sterilization systems.

2. Corrosion Resistance and Surface Protection

Hydrogen peroxide (H₂O₂) is a strong oxidizing agent that causes severe corrosion to ordinary metals, making material selection and surface protection crucial.

We use medical-grade 316L stainless steel as the core material.

Its molybdenum content enhances resistance against oxidation and corrosion. Even after long-term exposure to 30%–60% H₂O₂, the surface remains bright, smooth, and free from pitting—one key reason 316L is considered the industry standard.

After machining and welding, each needle undergoes:

1. Electropolishing – removes micro-residues and burrs, achieving a mirror-like finish.

   
   

2. Passivation – forms a stable oxide film to prevent secondary oxidation and improve durability.

   
   

In multiple corrosion tests, finished samples immersed in high-concentration H₂O₂ for 72 hours showed no pitting or degradation, confirming excellent reliability.

3. Compatibility Across H₂O₂ Concentrations

Under high concentration, even micro-porosity or minor surface defects can trigger corrosion.

Therefore, each weld zone undergoes airtightness and microscopic integrity testing to guarantee long-term structural stability.

4. Comparison of Metal Materials

Nickel-based alloys (Inconel Series) are high-performance materials composed primarily of nickel, chromium, and molybdenum.
They exhibit outstanding chemical stability and mechanical strength even under high-temperature and strong-oxidation environments.

In sterilization systems operating with high-concentration or high-temperature H₂O₂, Inconel 625 significantly extends lifespan and safety.

5. Material Selection and Optimization Strategies

• For high-concentration applications: Titanium or Inconel versions are recommended to extend service life.

  
  

• For large-scale manufacturing: 316L stainless steel remains the best choice due to its stable welding performance and cost efficiency.

  
  

• Surface optimization: Continue refining electropolishing and passivation techniques to strengthen the oxide film.

  
  

• R&D direction: Explore composite coatings and micro-layer structures for enhanced corrosion resistance under complex conditions.

  
  

6. Summary

Whether used in medical sterilization systems or industrial chemical delivery, the core value of the H₂O₂ Transfer Needle lies in its high corrosion resistance, precision sealing, and long-term stability.

Through scientific specification design, advanced metal processing, and strict quality control, Manners Technology ensures every transfer needle performs reliably under different concentrations and environments — providing a safe, durable, and efficient hydrogen peroxide transfer solution for global users.