Durable Sintered Filter Tube from China Suppliers for High-Efficiency Filtration in Various Industries
Features of sintered filter tube
Material diversity
Optional stainless steel (304/316L), titanium, nickel-based alloy and other corrosion-resistant materials.
Structural advantages
Porosity up to 35-45%, pore size range 0.22-100μm, support high precision filtration.
Deep filtration
The curved pore structure extends the impurity retention path and improves the dirt-holding capacity.
Parameters of sintered filter tube
1. Size specification
- Outer diameter: 4-220mm (support customization)
- Length: 4-1000mm (up to 2000mm for special requirements)
- Wall thickness: adjusted according to the application scenario, taking into account the strength and permeability.
2. Filtering performance
- Precision: 0.22-100μm (sub-micron ultra-fine filtration can be customized)
- Porosity: 28-50%, ensuring high flow rate and low pressure loss.
3. Pressure resistance and temp resistance
- Pressure strength: up to 2MPa (titanium material can be higher)
- Working temperature: -200℃ to 1000℃ (stainless steel material is suitable for high temperature environment).
Production Process of sintered filter tube
1. Raw material processing
Metal powder graded and screened or screen stacked and pressed to ensure particle/screen uniformity.
2. Molding process
Powder is pressed and shaped by mold, or silk screen is folded into tubular structure.
3. High temperature sintering
Sintering at high temperature (approx. 1500°C) in a vacuum furnace to form a stable porous structure.
4. Post-treatment
Cleaning, polishing, surface coating (e.g. to enhance corrosion resistance).
5. Quality control & packaging
Porosity, pore size distribution, pressure resistance test and other full-process testing.
Advantages of sintered filter tube
1. Material performance
- Resistant to strong acid, strong alkali, organic solvents, suitable for corrosive media (such as hydrochloric acid, aqua regia).
- No deformation of the aperture at high temperature, suitable for steam, thermal oil and other high-temperature scenarios.
2. Structural advantages
- Seamless one-piece molding, no shedding particles, in line with food/pharmaceutical health standards.
- Backwashing regeneration capacity, service life up to 3-5 times longer than ordinary cartridges.
3. Application flexibility
Can be customized tube, plate, sheet and other forms, to adapt to the needs of complex equipment.
Application of sintered filter tube
1. Chemical and petroleum
Catalyst recovery, oil refining, gas desulfurization (such as hydrogenation cracking circulating oil filtration).
2. Pharmaceutical and food
Injection decarbonization, beverage clarification (such as mineral water, beer filtration).
3. Environmental & water treatment
Industrial wastewater heavy metal removal, seawater desalination pretreatment.
4. Aerospace and energy
Aviation fuel purification, nuclear industry coolant filtration.
5. Electronics & semiconductor
Ultra-pure water preparation, gas dust removal (such as semiconductor production environment purification).
Frequently Asked Questions
Q1: What materials are available for the sintered filter tubes?
Sintered filter tubes can be manufactured using a variety of corrosion-resistant materials, including stainless steel (304/316L), titanium, and nickel-based alloys, depending on your application requirements.
Q2: What is the filtration accuracy and porosity of these tubes?
They offer high-precision filtration with a pore size range of 0.22 to 100μm. The porosity typically ranges from 28% to 50% (porosity up to 35-45% for structural models), ensuring high flow rates and low pressure loss.
Q3: How do sintered filter tubes perform under extreme temperatures and pressures?
Sintered filter tubes are highly durable, supporting working temperatures from -200℃ up to 1000℃ (especially stainless steel models). They can withstand pressure strengths up to 2MPa, and titanium versions can handle even higher pressures.
Q4: What are the key benefits of the seamless structure?
The seamless one-piece molding prevents particle shedding, satisfying strict food and pharmaceutical health standards. Additionally, the curved pore structure enhances dirt-holding capacity and deep filtration performance.
Q5: Can these filter tubes be cleaned and reused?
Yes. Sintered filter tubes feature backwashing regeneration capabilities, which can extend their service life to 3-5 times longer than that of ordinary filter cartridges.
Q6: In what sizes are the sintered filter tubes available?
Standard sizes include an outer diameter of 4-220mm and a length of 4-1000mm. Custom sizes (up to 2000mm in length) and specific wall thicknesses can be designed to balance strength and permeability.