Superior Porous Plastic Tube & Porous Metal Tube Designer and Manufacturer

With more than 20 years of development, Filson has complete-scale, advanced technology and extensive experience to provide you with a wide variety of porous tubes.

  • Compliance with ISO9001 quality certification
  • High-purity material prolongs service life
  • Precise pore size ensures fine filtration
  • A reasonable price provides high cost-effective
  • Minimum order quantity: 50pcs

What is Porous Tube?

A porous tube is a tube-type porous filter made of granular material through high high-temperature, high-pressure sintering process. It can be divided into porous plastic pipe and porous metal pipe according to the material, suitable for different environments and applications.

Filson porous metal tube is ideal for filtering gas or liquids in extreme environments such as high heat, high pressure, and corrosion, the temperature can even be up to 1,200℃. Porous plastic tubes can be used for filtration, as well as as gas diffusers, injectors, etc.

Filson porous tube has a variety of materials, including nickel, stainless steel, bronze, PTFE, HDPE, and polypropylene. We also offer a wide range of sizes where you can choose the most appropriate one for your system or customize products according to your requirements.

Common Classification of Porous Metal Tubes

Porous Nickel Tube

Filson porous nickel tube has excellent heat resistance, which can maintain high filtration performance at high temperatures up to 1200℃. It has a stable structure good permeability, and no particulate shedding while rapidly filtering liquids.

Porous Stainless Steel Tube

Adapting high-quality stainless steel 304 / 316L, Filson stainless steel tube has great corrosion tolerance and wear resistance. After strict stress tests, integrity tests, bubble point test,s and other tests, it has unparalleled performance and long service life.

Porous Bronze Tube

Made of high-purity bronze particles, Filson porous bronze tube has stable mechanical strength. It can be regenerated through chemical treatment or heat treatment, greatly improving the cost-effectiveness and improving the cost performance of the product.

Common Classification of Porous Plastic Tubes (3)

  • Porous PTFE Tube
    With porosity of 70%, Filson porous PTFE tube’s air flow rate can reach 15 L/min at 25℃. It has non-viscous surface, which can totally avoid contaminant attachment, it also has wide temperature tolerance range from﹣200℃ to 260℃.
  • Porous HDPE Tube
    Having ability to filter, diffuse, spray gas and liquid, Filson HDPE tube has many applications. It has omni-directional porous structure, performs multi-level filtering at one time, and is very compatible with standard Schedule 40 PVC-end joints.
  • Porous Polypropylene Tube
    Compared with other porous plastic tubes, Filson porous polypropylene tube has better high heat resistance and can be used normally in 400℃ environment. It is capable to efficiently capture 99.99% impurities at high flow rate of 4,000 GMP.

Filson Porous Tube Benefits

Convenient Installation
Convenient Installation

Filson uses automated equipment to produce and cut porous tubes to ensure the size is standard and consistent. They are cylindrical, simple in structure, and easy to install and remove.

Extensive Application
Extensive Application

With multiple apertures to choose from, Filson porous tubes are capable of various grades of filtration. It can also be used to purify gas or as a gas diffuser, injector, silencer, etc.

High Efficiency
High Efficiency

Having precise and uniform pore size, the filtration efficiency of Filson porous tube can even reach more than 99.99%. It has good permeability to quickly filter gases or liquids.

Long Service Life
Long Service Life

Filson porous tube has high mechanical strength, stable structure, and huge dirt holding capacity, which can be used for long periods of time and always maintain high performance.

Advantages of Filson Porous Tube

  • Complete: Both porous metal tubes and porous plastic tubes are provided in Filson. We design and manufacture porous tubes of various materials, and connection types, including thread/222/226/DOE to be compatible with most systems.
  • Durable: Filson porous tube is made of high purity, premium materials, and has good chemical resistance, high-temperature resistance, and wear resistance, which can be used normally in extreme environments such as high heat and high pressure.
  • Affordable: Filson makes prices of products strictly based on the cost. Compared to the same high-quality porous tube in the market, our price is the most favorable, designed to bring you the highest cost-effective product and the highest satisfaction.
Advantages of Porous Tube
Feature of Porous Tube

Feature of Porous Tube

  • Strong structure avoids particulate shedding
  • Huge dirt holding capacity extends service life
  • High mechanical strength avoids leakage or wear
  • The automated process ensures precise specifications
  • Porous structure, with a maximum porosity of 75%
  • Unparalleled temperature resistance of up to 1,200℃
  • Simple construction for easy installation and operation
  • Standard thread interface to connect with the system tightly
  • Good permeability allows gas or liquid to pass at high speed
  • Multiple apertures meet your various requirements

Why Choose Filson Porous Tube

Porous Tube Factory
Porous Tube Production

As an OEM factory with more than 20 years of experience, Filson is responsible for the designing, producing, testing, packaging and delivering processes. As long as you choose Filson as your porous tube supplier, then you can enjoy a one-stop service.

Filson always pursues higher product quality. Therefore, we are strict with ourselves in the selection of materials, production process standardization, comprehensive detection, and other aspects, aiming to provide you with the most satisfactory porous tube.

In order to meet the personalized needs of customers, Filson also provides customized services. As long as you send us the required size, our professional engineers will design the drawings and quickly put them into production. Contact us by phone at +86-157 3695 8886 or send us an email at

Specifications of Porous Tube
  • Materials: bronze, stainless 304/316L, nickel, PTFE, HDPE, polypropylene, etc.
  • Temperature Resistance: -200℃ to 1200℃
  • Micron Rating Range: 0.2μm to 200μm
  • Filtration Efficiency: more than 99.99%
  • Flow Rate: 1 GPM to 4000 GPM
  • Outside Diameter: 0.25” to 1”
  • Inside Diameter: 0.125” to 0.75”
  • Porosity: 25% to 75%
  • Thickness: 0.039” to 0.093”
  • Length: 6”, 12”, 18”, 24”, or customized
  • Minimum Ordering Quantity: 50pcs
  • PMI: Conduct PMI testing of porous tubes to verify and identify materials to ensure that the materials are correct and conform to standards and specifications.
  • Accuracy: Filson tested the micron rating of porous tube with reliable instruments, appropriate test methods, and consistent test conditions to ensure filtration efficiency of over 99.9%.
  • Porosity: The porosity determines filtration speed and fluid flow of porous tube. Through the strict control of porosity, the porosity reaches 75% and the flow rate reaches 4000 GPM.
  • Dimension: After each porous tube is produced, Filson makes rigorous measurements to ensure that its size is standardized. Besides. Our products are manufactured automatically, with consistency between batches.

Applications of Porous Tube

Manufactured by high purity bronze, stainless steel, nickel, PTFE, HDPE, PP, and other premium materials, Filson porous tube has superior chemical resistance, which is inert to acid and alkali samples such as corrosive gases or liquids.


Filson porous tube is compliant with FDA certification requirements and is non-toxic for contacting with food directly. It is commonly used to remove carbon for decolorization, filter syrup, and wine, and as a carbonated drinks bubbler.


In pharmaceutical industry, the storage and delivery of medicines is extremely important. Filson porous tube with different pore sizes can adjust the flow rate of liquid drugs, control the flow rate of medical equipment and fine-filter the drugs.


Filson porous tube is specially suitable for filtering viscous liquids such as oxide slurry,  high-speed printer ink, etc. Through the efficient purification of liquids, it can effectively improve the accuracy and durability of electronic devices.


The filtration accuracy range of Filson porous tube is wide, with a minimum of 0.2 microns. It can maintain filtration efficiency above 99.99% in extreme environments of high temperature and high pressure, meeting the requirements of refinery.


Filson porous tubes can not only filter gases or liquids but also serve as sprayers gas diffusers, etc. Its uniform pore size and strong structure build it excellent performance in all aspects, therefore it is widely used in the energy industry.

Filson: Providing You with Comprehensive and Superior Porous Tubes

Filson will make you satisfied through high performance products, competitive price and wholehearted service.

Porous Tube FAQ Guide

What are The Materials of Filson Porous Tube?

Filson porous tubes are made into two main categories: metal and plastic.

Metal porous tubes include porous nickel tubes, porous stainless steel tube, and porous bronze tube.

Plastic porous tubes include porous PTFE tubes, porous HDPE tubes, and porous PP(polypropylene) tubes.

The performance of different materials is also different, for example, porous nickel tube can withstand up to 1200℃ high heat, porous PTFE tube is naturally hydrophobic, very suitable for gas filtration, etc. You can choose the most suitable product according to your needs.

What are The Uses of Filson Porous Tube?

Filson porous tube is widely used not only as a filter to remove impurities in the gas or liquid but also as a flow limiter, silencer, sprayer, etc.

Could The Size of Filson Porous Tube be Customized?

Of course, you can customize the porous tubes. Since Filson is an OEM factory for integrated design, manufacturing and delivery, it supports customized service of any size and material to be better compatible with your system.

What Logistics Does Filson Usually Deliver The Goods Through?

What Logistics Does Filson Usually Deliver The Goods Through

Filson has long-term cooperation with many express companies including FedEx, TNT, DHL, DDP, etc. We can deliver to port or door according to your needs.

Can Filson Design The Drawings for Free?

Yes, Filson has a dedicated design team, and many professional and experienced engineers, who design the most appropriate drawing according to your personalized needs for free, and then quickly put it into production for early delivery.

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