Porous Frit

 

HENGKO – Your Trusted Professional Porous Metal Frit Custom Factory

If You are Looking for high-precision, durable porous metal frits tailored to your application?  

HENGKO is here to provide the custom solution your special porous frit need.  

As a professional manufacturer specializing in sintered metal technology, we offer custom porous frits made from

stainless steel, titanium, bronze, and other high-performance alloys.  

 

Our products are trusted worldwide in industries such as pharmaceuticals, gas detection, lab instrumentation,

chemical processing, and environmental monitoring

— anywhere you need reliable filtration, gas diffusion, or flow control under harsh conditions.

By working with HENGKO, you benefit from:

1. Fully customized frits designed to meet your specific pore size, dimensions, shape, and filtration needs

2. Flexible production from small-batch prototyping to large-scale manufacturing

3. Expert technical support to help optimize your system's performance

4. Fast response and global delivery to keep your project on schedule 

 

With features like uniform pore structure, excellent mechanical strength, corrosion resistance,

and heat tolerance, our porous metal frits are built to perform where it matters most. 

Whether you're developing cutting-edge equipment or upgrading existing systems,  

HENGKO is your reliable partner for precision-engineered porous solutions.  

 

Welcome to contact us directly by email ka@hengko.com to share your application and helping you get the

best filtration solution with our years of design and production experience of porous sintered metal frit. 

 

   

 

 

 

 

 

 

 

 

 

 

⭐ Key Features of Stainless Steel Porous Frits

1. Uniform and Precise Pore Structure

Stainless steel porous frits are manufactured using advanced powder metallurgy and sintering processes,

allowing for extremely consistent pore size distribution. 

This ensures accurate, repeatable filtration performance, which is critical in applications like gas sampling,

HPLC systems, and fine chemical processing where precision is vital. 

2. High Mechanical Strength and Durability

Due to the solid metal structure formed during sintering, these frits can withstand high pressure, vibration,

and mechanical stress without cracking or deforming.

They are ideal for demanding environments like industrial filtration systems, high-pressure reactors,

or sensor protection in harsh conditions.

3. Excellent Corrosion Resistance

Made from stainless steel grades such as 316L, these frits resist corrosion from acids, alkalis, solvents,

and other aggressive media. This makes them suitable for chemical, pharmaceutical, and petrochemical industries,

where exposure to harsh substances is common.

4. High Temperature Resistance
Stainless steel porous frits can operate continuously at temperatures up to 600°C or more, depending on

the alloy used. Unlike plastic or polymer filters, they maintain structural and filtration integrity under thermal cycling

and extreme heat, making them suitable for processes involving hot gases or sterilization.

5. Reusable and Easy to Clean

These frits are designed for long-term use and can be cleaned using backflushing, ultrasonic cleaning, steam sterilization,

or chemical soaking. This reusability reduces replacement costs and downtime in industrial operations.

6. Stable and Non-shedding Structure

Unlike fiber or ceramic filters that may degrade over time, sintered stainless steel frits are solid and do not release particles

into the media. This makes them ideal for sensitive systems such as precision instruments, gas analyzers, and sterile environments.

7. Customizable in Shape, Size, and Micron Rating

You can design frits to meet specific dimensional and filtration requirements — including discs, tubes, cones, or special geometries.

Micron ratings can range from sub-micron (0.5 μm) to coarse (100+ μm), offering great flexibility across different applications.

8. Broad Chemical Compatibility

Stainless steel is chemically inert to a wide range of substances, allowing frits to be used with gases, organic solvents,

water-based solutions, and more — all without compromising material integrity or contaminating the filtered media.

Applications of Porous Stainless Steel Frits

1. 1.Gas and Liquid Filtration
   Used in filtration systems to remove particulates from gases and liquids in industrial processes. Ideal for applications requiring clean, particle-free output, such as in compressed air systems or hydraulic circuits.

2. 2.Gas Diffusion and Sparging
   Stainless steel frits are often used as spargers or diffusers to distribute gas evenly into liquids for chemical reactions, fermentation, or water treatment. Their uniform pore structure ensures fine bubble generation for efficient gas-liquid contact.

3. 3.Chromatography Systems (HPLC, GC)
   Frits serve as in-line filters or column-end supports in HPLC and gas chromatography to prevent solid particles from entering the column and to evenly distribute the sample and mobile phase.

4. 4.Sensor Protection
   In environmental and industrial sensors, frits are used as protective filters to shield sensing elements from dust, moisture, and chemicals while still allowing gas or air flow to pass through.

5. 5.Catalyst Support
   The porous structure can hold or immobilize catalysts in chemical reactors, enabling uniform flow and reaction efficiency. These are often used in gas-phase or liquid-phase catalytic processes.

6. 6.Flow Restriction and Damping
   Stainless steel frits can act as flow restrictors or dampers to control gas or liquid flow rates in instrumentation and analytical equipment. Their predictable pore size allows for precise flow control.

7. 7.Vacuum and Degassing Systems
   Used in degassing chambers and vacuum systems to filter out vapors and particulates while maintaining system integrity under low pressure.

8. 8.Sample Preparation and Laboratory Filtration
   Commonly used in laboratory settings to filter, separate, and prepare samples for analysis. Their chemical compatibility and heat resistance make them versatile for lab equipment.

9. 9. Fluid Sampling and Inline Monitoring
   Installed in pipelines or sampling systems to ensure clean and accurate sample extraction from process streams, especially in oil, gas, and water quality testing.

10. 10.Medical and Pharmaceutical Equipment
    Used in sterile filtration, cleanroom environments, or drug delivery systems due to their biocompatibility, sterilizability, and particle retention capabilities.

Frequently Asked Questions

1. What is a porous metal frit and how does it work?

A porous metal frit is a filter component made from sintered metal powders, typically stainless steel, bronze, or titanium. During the sintering process, metal particles are bonded together under high temperature without melting, creating a rigid structure with interconnected pores.
These pores allow fluids or gases to pass through while trapping solid particles, making them ideal for filtration, diffusion, pressure equalization, and flow control in various industrial applications. Their strength, uniformity, and chemical resistance make them far superior to traditional filter media like mesh or polymers in demanding environments.

2. What are the advantages of using stainless steel porous frits over other materials?

Stainless steel porous frits offer several key advantages:

• *High mechanical strength – suitable for high-pressure and vibration-prone environments.

• *Excellent corrosion resistance – ideal for harsh chemicals, solvents, and outdoor use.

• *High temperature tolerance – maintains stability even above 600°C.

• *Reusable and cleanable – can be backflushed, ultrasonically cleaned, or sterilized.

• *Non-shedding structure – unlike fiber or mesh filters, they don’t release particles.
  Compared to ceramic, polymer, or glass frits, stainless steel versions last longer, are more versatile, and offer a superior total cost of ownership.

3. What pore sizes are available for metal frits?

Porous metal frits can be manufactured in a wide range of pore sizes, from sub-micron levels (0.5 µm) to coarse pores exceeding 100 µm. The selection of pore size depends on your application:

• *0.5–5 µm: fine filtration, sterilizing gas, HPLC protection

• *5–20 µm: liquid filtration, gas sparging, flow control

• *20–100+ µm: coarse separation, structural support

• Custom pore sizes and porosity levels can also be tailored based on required flow rate, filtration efficiency, and mechanical strength.

4. Where are porous metal frits commonly used?

Porous metal frits are widely used across multiple industries:

• *Pharmaceutical and biotech – sterile filtration, chromatography, gas diffusion

• *Chemical and petrochemical – catalyst support, inline sampling, gas sparging

• *Environmental monitoring – sensor protection, air quality testing

• *Food and beverage – gas dispersion, sanitary filtration

• *Industrial automation – flow control, damping, backpressure regulation
  They are essential wherever durable, high-precision filtration or flow control is required.

5. Can porous metal frits be reused and how are they cleaned?

Yes, one of the biggest advantages of porous stainless steel frits is that they are reusable and easy to clean. Cleaning methods include:

• *Backflushing with air or solvent

• *Ultrasonic cleaning to remove embedded particles

• *Chemical soaking using acids or solvents, depending on the contamination

• *Steam or autoclave sterilization for sanitary applications
  Proper maintenance significantly extends the life of the frit, making it a cost-effective solution over time.

6. Are porous metal frits customizable?

Absolutely. Manufacturers like HENGKO offer full OEM/ODM customization services, allowing you to specify:

• *Pore size and porosity level

• *Shape and dimensions (discs, tubes, cones, cups, flanges, etc.)

• *Material type (316L stainless steel, titanium, Hastelloy, etc.)

• Micron rating and flow rate targets
  This ensures optimal performance and integration into your system or device.

7. How do porous frits differ from mesh or perforated metal filters?

While mesh or perforated metal filters rely on surface filtration, porous metal frits offer depth filtration. That means:

• *Contaminants are trapped within the depth of the material, not just on the surface.

• *They provide higher dirt-holding capacity and better particle retention.

• *Their structure is more rigid, durable, and resistant to deformation under pressure.
  For critical applications requiring high precision, longevity, and minimal maintenance, porous frits are the superior choice.

Need a Custom Porous Metal Frit? Let’s Build It Together.

Whether you require precise pore size, unique shapes, or extreme environmental durability

— HENGKO specializes in custom porous frit solutions tailored to your exact application.

Contact us today at ka@hengko.com to discuss your specifications and receive expert support from our engineering team.

Your custom frit, your performance advantage — made by HENGKO.