High-Performance Sintered Metal Filters for Harsh Environments
As a manufacturer of high-quality, innovative metal filter products, Lianda provides state-of-the-art technical solutions suitable for high-temperature and corrosive environments.Typically, these sintered metal filter elements are made from stainless steel, bronze, nickel-based alloys, or titanium.They can be seamlessly welded using specialized alloys and customized into various shapes with threaded connectors or nozzles.Filtration performance is defined by precise pore size distribution.
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Product of Sintered Metal Filters
Cylindrical sintered stainless steel cartridges for inline pipeline filtration. Available in multi-layer constructions for combined coarse-fine separation. Pore sizes from 0.2 µm to 100 µm. Widely used in pharmaceutical liquid purification, food & beverage processing, and petrochemical pipeline protection.
Sintered metal tube filters with open-end or closed-end configurations. Suited to gas diffusion, sparging, and liquid backwash applications. High flux, cleanable, reusable. Ideal for aeration systems, hydrogen purification, and chemical reactor sparging.
Flat sintered disc filters for in-line or in-vessel placement. Uniform thickness, precise OD tolerances. Commonly applied in analytical instruments, laboratory sampling systems, and high-pressure hydraulic circuits.
Rectangular or custom-profile sintered metal plates for large-area filtration assemblies. Weldable edges. Trusted in chemical processing plants, battery manufacturing lines, and electroplating facilities.
Conical sintered filters designed for self-draining installation or funnel-type assemblies. Handles viscous media and particulate-laden streams. Available in 316L, titanium, and bronze. Perfect for paint filtration, resin processing, and heavy slurry separation.
Long cylindrical candle-type sintered filters for dust collection, hot-gas filtration, and catalyst recovery. Operates continuously at 800°C+. Threaded or flanged end caps available. Extensively used in power generation, cement plants, and high-temperature exhaust treatment systems.
Continuous operation up to 950°C in oxidising and reducing atmospheres. Structural integrity retained
under thermal cycling.
316L stainless steel, Hastelloy, and titanium options for strong acid, alkali, and chloride-rich media. No coating to delaminate.
Controlled sintering produces tight pore size distribution — 0.2 µm to 200 µm. Consistent cut-point across the filter face.
Clean with reverse-flow gas, steam, or ultrasonic bath. Service life measured in years, not weeks. Lower total cost of ownership.
Welded, threaded, flanged, or compression-fit connections. Discs, tubes, cones, candles — all produced in our sintering facility.
FDA-compatible 316L and 304L stainless steel. Electropolished surface finish options. Meets hygienic design requirements.
No binders, adhesives, or support cores needed. The sintered metal matrix is the filter medium and the structure simultaneously.
Withstands pressure spikes without media migration. Tested at working pressures above 100 bar depending on wall thickness.
Precise Aperture Control, Strict Tolerances
Our sintered powder metal filters are manufactured using a controlled sintering process that directly determines pore size distribution. We’re not applying a membrane or coating — the pore structure is intrinsic to the sintered matrix itself. That means it won’t delaminate, migrate, or change over time.
We characterise every production batch using bubble point testing and mercury intrusion porosimetry, and we can provide pore size data on request. If you’re specifying a sintered metal filter element for a critical separation step, that documentation matters. We can hold tolerances from 0.2 µm for fine filtration up to 200 µm for coarse protection duty — and we’ll tell you honestly when a different filter type would serve the application better than ours would.
Why Buyers Choose Lianda Over Other Sintered Metal Filter Manufacturers
With fully in-house manufacturing, a wide range of material options, flexible custom production, and complete quality documentation, we deliver reliable sintered metal filters tailored to customer requirements. Backed by an engineering-focused team, we provide both high-performance products and practical technical support.
Sintered Metal Filter Elements By Material
Our manufacturing capability spans five core alloy families. Each entry below reflects the actual application profile we see most often from customers specifying that material.
316L is the starting point for most sintered powder metal filter specifications. Low carbon content prevents sensitisation during welding. Suitable for most aqueous media, steam, organic solvents, and temperatures up to 750°C continuous. Available in all product geometries.
Where the process doesn’t require molybdenum-grade corrosion resistance, 304L delivers equivalent mechanical properties at a lower alloy cost. Widely used in food processing, water treatment, and compressed air filtration.
Sintered bronze filter elements are the right choice when iron contamination is a concern, or when the application involves oil-impregnated or self-lubricating assemblies. Good acoustic damping characteristics. Common in hydraulics and pneumatics.
Titanium sintered metal filters are specified for hydrochloric acid service, offshore produced-water systems, and chlorinated process streams where 316L stainless pitting resistance is insufficient. Lightweight, biocompatible, and weldable.
Nickel-alloy sintered filters for concentrated acid service, high-temperature reducing atmospheres, and multi-phase corrosion environments. Hastelloy C-276 for HCl and H₂SO₄; Inconel 625 for oxidising conditions above 800°C.
A sintered metal filter is made by compacting metal powder — typically stainless steel, bronze, or titanium — and then heating it below its melting point until the particles bond together. The result is a rigid, self-supporting porous structure. Unlike woven wire mesh, sintered filters have a three-dimensional pore network with a more tortuous flow path, which gives better depth-filtration performance and higher dirt-holding capacity. Sintered filters are also less prone to fibre migration and can be manufactured with submicron pore sizes that woven mesh cannot achieve.
We manufacture sintered metal filter elements from 0.2 µm (for sterile-grade gas filtration) up to 200 µm for coarse straining applications. The most common specifications we supply are 1–5 µm for pharmaceutical and fine chemical duty, 10–40 µm for hydraulic and pneumatic systems, and 50–100 µm for protection filtration upstream of process equipment. Pore size distribution is characterised by bubble point testing and reported on our inspection certificates.
Our 316L sintered stainless steel filters are rated for continuous service up to 750°C in air and up to 950°C in inert or reducing atmospheres. Nickel-alloy filters (Hastelloy, Inconel) extend this range to 1050°C+ depending on the atmosphere. Bronze sintered filters are limited to around 300°C. We always ask about the atmosphere — temperature capability in oxidising conditions is lower than in inert gas, because stainless steel forms surface oxide layers that can affect pore stability at extreme temperatures.
