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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a trusted manufacturer specializing in sintered metal powder filter elements. Our 304 Stainless Steel Sintered Metal Powder Filter Element (20 Micron) is precision-engineered for demanding chemical processing environments. With over two decades of experience and an annual export value of US$5–10 million, we deliver high-performance filtration solutions that combine durability, corrosion resistance, and consistent micron rating. This product is ideal for solid-liquid separation, gas filtration, and catalyst recovery in aggressive chemical streams.
Key Features
- Material Excellence: Made from 304 stainless steel powder, sintered at high temperature to form a rigid, porous structure with excellent mechanical strength and corrosion resistance.
- Precise Filtration Rating: 20 micron absolute rating ensures reliable removal of particles ≥20 μm, with high dirt-holding capacity and low pressure drop.
- Backwashable & Reusable: Sintered metal filters can be cleaned by backwashing, ultrasonic cleaning, or chemical flushing, reducing replacement costs.
- High Temperature & Pressure Tolerance: Withstands operating temperatures up to 600°C (optional) and high differential pressures, ideal for harsh chemical processes.
- Customizable Dimensions: Available in standard lengths (10″, 20″, 30″) and diameters (60mm, 70mm, etc.), with custom end connections (threaded, flanged, or bayonet).
- Uniform Pore Structure: Advanced sintering process guarantees consistent porosity and bubble point, ensuring stable filtration performance batch after batch.
- Wide Chemical Compatibility: 304 SS offers excellent resistance to many organic solvents, acids, and alkalis (excluding strong chlorides).
Technical Specifications
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Filtration Rating | 20 μm (absolute) |
| Porosity | 30% – 45% (customizable) |
| Max Operating Temperature | Up to 600°C (optional) |
| Max Differential Pressure | Up to 10 bar (higher available) |
| Standard Dimensions | OD: 60mm, Length: 250mm/500mm/1000mm |
| End Connections | Threaded (NPT/BSP), Flanged, or Custom |
| Surface Finish | Sintered matte, optional electropolished |
Applications in Chemical Processing
- Catalyst Recovery: Retain expensive catalyst particles while allowing product to pass.
- Acid & Alkali Filtration: Suitable for dilute acids and alkalis at moderate temperatures.
- Polymer & Resin Filtration: Remove gels and contaminants from viscous fluids.
- Gas Purification: Filter particulate from process gases, including steam and compressed air.
- Solvent Filtration: Handle aggressive organic solvents like acetone, toluene, and alcohols.
- Wastewater Treatment: Pre-filtration for membrane systems or final polishing.
Why Choose Boli Hardware?
Since 1998, our factory in Hengshui, Hebei has been dedicated to manufacturing sintered metal filters. We ship from major ports including Tianjin, Qingdao, and Shanghai, serving global markets across North America, Europe, Southeast Asia, and the Middle East. Our annual export value of US$5–10 million reflects consistent quality and customer trust. Every filter element undergoes strict quality control: bubble point testing, flow curve verification, and dimensional inspection. We offer OEM/ODM services and free samples for qualification. With a lead time of 15–25 working days, we ensure timely delivery. Contact us today to discuss your specific filtration requirements. Our team of engineers can help optimize element design for your process conditions.
Frequently Asked Questions (FAQ)
Q1: What is the difference between sintered metal powder and wire mesh filters?
A: Sintered metal powder filters have a three-dimensional porous structure with higher dirt-holding capacity and finer filtration capability compared to wire mesh. They are more suitable for high-viscosity or high-temperature applications where depth filtration is needed.
Q2: Can the 20 micron filter be used for gas filtration?
A: Yes, it is suitable for gas filtration applications such as compressed air, steam, and process gases. The sintered structure provides uniform pore distribution for efficient particle removal.
Q3: How do I clean the filter element?
A: Common cleaning methods include backwashing with clean fluid, ultrasonic cleaning, or chemical soaking. The exact method depends on the contaminant type. Our elements are designed to withstand multiple cleaning cycles.
Q4: What is the maximum operating temperature for 304 stainless steel?
A: In oxidizing environments, 304 SS can be used up to 870°C, but for continuous service in chemical processing, we recommend a maximum of 600°C to avoid sensitization. For higher temperatures, 316L or 310S options are available.
Q5: Do you offer custom sizes and end connections?
A: Yes, we provide full customization. You can specify outer diameter, length, end connection type (threaded, flanged, bayonet, etc.), and even special porosity requirements. Contact our sales team with your drawings.
Q6: Is this filter element food-grade?
A: 304 stainless steel is generally recognized as food-safe. However, if you require FDA or other food-grade certifications, please inform us. We can provide materials with appropriate surface finish and documentation.
Q7: What is the typical lead time?
A: For standard sizes, lead time is 15–20 working days. Custom orders may require 20–25 days. We also offer express shipping options for urgent orders.
Q8: Can I get a sample before placing a bulk order?
A: Yes, we provide free samples for qualification. You only need to pay shipping costs. Contact us to request a sample of the 20 micron sintered filter element.
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