Products Description
Need a durable, high-temperature filter element with uniform pore distribution?
Guanjiang's Stainless Steel Sintered Filter Element is a high-performance filtration component manufactured through powder metallurgy technology. Stainless steel powder (304, 316, or 316L) is sintered at high temperatures to form a porous, three-dimensional network structure with controlled pore size distribution, high mechanical strength, and excellent permeability. Featuring a self-supporting structure with interconnected pores, filtration precision ranges from 0.5 to 100 microns with 30-50% porosity — operating from -200°C to 650°C.
Key Advantages
Withstands temperatures from -200°C to 650°C without performance degradation. Excellent corrosion resistance to acids, alkalis, and organic solvents — maintains structural integrity under thermal cycling.
High compressive strength prevents collapse under pressure differentials. Withstands backpressure pulses up to 15 bar during cleaning cycles — resists vibration and mechanical impact.
Uniform pore distribution ensures consistent filtration efficiency. Regenerable through backflushing, ultrasonic cleaning, or thermal treatment — high dirt holding capacity with minimal pressure drop increase.
Smooth surface finish (Ra ≤ 0.8μm) prevents bacterial colonization. Meets FDA, cGMP, and USP Class VI requirements — no media migration or fiber shedding during operation.
Service life 3-5 times longer than conventional filter elements — reduces replacement frequency and operating costs.
Cylindrical pleated / Tubular / Disc / Conical shapes — custom sizes available.
100% recyclable material with minimal environmental impact — reduced waste generation and disposal costs.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | SS304 / SS316 / SS316L stainless steel |
| Filtration Precision | 0.5 ~ 100 μm (customizable) |
| Porosity | 30% ~ 50% |
| Compressive Strength | 1 ~ 5 MPa (thickness dependent) |
| Maximum Backpressure | ≤ 15 bar (during pulse cleaning) |
| Operating Temperature | -200°C ~ 650°C |
| Surface Finish | Ra ≤ 0.8 μm (electropolished available) |
| Shapes Available | Cylindrical pleated / Tubular / Disc / Conical / Custom |
| Compliance | FDA, cGMP, USP Class VI |
Manufacturing Process:
Stainless steel powder → Precise particle grading → Mold forming → High-temperature sintering (1100-1300°C) → Cooling → Sizing → Surface treatment → Quality inspection. This specialized powder metallurgy process creates a three-dimensional porous structure with uniform pore distribution and self-supporting strength.
Applications
| Industry | Typical Applications |
|---|---|
| Petrochemical | Catalyst recovery, polymer filtration, solvent purification, gas filtration |
| Pharmaceutical | Sterile ventilation, fermentation air, process gas filtration, API purification |
| Food & Beverage | Carbonation filtration, syrup polishing, process water treatment, edible oil |
| Nuclear Industry | Primary coolant filtration, radioactive waste processing, gas cleanup |
| Semiconductor | High-purity gas filtration, CMP slurry filtration, chemical distribution |
Frequently Asked Questions
Q1: How does sintered metal filter differ from wire mesh or felt filters?
A: Sintered metal filters are manufactured from metal powder via powder metallurgy — creating a three-dimensional porous structure with uniform pore distribution, high strength, and excellent cleanability. Wire mesh is woven — lower strength, can unravel. Felt is non-woven — lower mechanical strength, not regenerable. Sintered metal offers the best combination of precision, strength, and service life.
Q2: How do you clean and regenerate the sintered filter element?
A: The filter can be regenerated through multiple methods: Backflushing (reverse flow of clean fluid), Ultrasonic cleaning (in suitable solvent), Chemical cleaning (dissolving trapped particles), or Thermal treatment (burning off organic residues). Proper regeneration extends service life 3-5 times longer than disposable filters.
Q3: What is the maximum operating temperature?
A: Stainless steel sintered filters can operate from -200°C to 650°C depending on the material grade. SS304/316L grades maintain structural integrity up to 650°C. For higher temperatures, special alloys (Hastelloy, Inconel) are available upon request.
Q4: Is the filter suitable for pharmaceutical applications?
A: Yes. With smooth surface finish (Ra ≤ 0.8μm) and 316L stainless steel construction, the filter meets FDA, cGMP, and USP Class VI requirements. No media migration or fiber shedding ensures product purity. Full material traceability documentation is available.
Q5: What shapes and sizes are available?
A: Standard shapes include cylindrical pleated (increased surface area), tubular, disc, and conical. Custom shapes can be manufactured to your specifications. Standard tube diameters: 10mm ~ 200mm. Standard lengths: 100mm ~ 1000mm. Disc diameters: 10mm ~ 500mm. Contact us with your requirements.
Need a durable stainless steel sintered filter element for your demanding application?
Request a Quote → Download Datasheet (PDF)* Please provide your required filtration precision (μm), dimensions, operating temperature, and any special requirements (pharma/food/high-temp) for a fast, accurate quotation.
