Your One-Stop Wire Mesh Fence Supplier | POLYMETAL
Round Filter Discs Closed Edge Stainless Steel Wire Mesh are rimmed/edge-wrapped discs that prevent fraying and wire shed during handling and backwash. Built in single- or multi-layer constructions (including sintered packs), they deliver stable retention, high mechanical strength, and long, reusable service in harsh media.
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At a Glance Round Filter Discs
Mesh materials: SS 304/304L/316/316L/321/430, low-carbon steel, brass, aluminum (others on request).
Mesh types: Woven mesh, Dutch (filter) mesh, perforated metal, expanded metal, sintered mesh, etched mesh.
Shapes: Round, rectangle, loop/ring, oval; circle mesh with closed (enfolded) edges for clean handling.
Use cases: Plastics/rubber extrusion screens; oil & cereal sifting; evaporation/filtration in petroleum; food, chemical, pharma, metallurgy, machinery; ship & automotive air filters.
Why Closed-Edge Discs
High strength: Extreme mechanical strength and pressure tolerance; machinable, weldable, easy to assemble.
High precision: Stable pore geometry—media grade does not drift in service.
Heat & chemical resistance: Continuous use from ~200 °C up to ~600 °C (grade & weave dependent); suitable in acid/alkali conditions.
Cleanable & reusable: Backwash/ultrasonic/solvent cleaning; supports backstream, dissolution, and baking to extend service life.
Disc Types
Single-layer disc (lowest ΔP; coarse–medium retention)
Multi-layer edge-covered disc (bound rim for strength)
Multi-layer welded disc (spot-welded screen pack)
Multi-layer sintered disc (diffusion-bonded laminate for accurate micron & rigidity)
Typical Applications Round Filter Discs
Chemical products and catalysts
Foodstuffs & spices (milk powder, coffee, tea, rice, grains)
Stones & powders (minerals, diamond sizing, ores, alumina)
Pharmaceutical products
Boards & fixing plates (separating shavings/wadding)
Paper coatings & wood-shaving sieving
Metal powders (precision sieving)
Rubber processing
Animal feedstuffs (de-dusting pellets, sieving crumbs, molasses feeds)
Fertilizers (phosphates, potash, urea, mixed grades)
Sugar & salt sizing
Plastic recycling (melt filtration, pelletizing)
Edge-Closure Options (Closed Edge)
| Method | Description | When to choose |
|---|---|---|
| Rimmed/Bound edge | Metal ring (SS/Al/CS) crimped/bonded around disc periphery; burr-free handling | High-duty extrusion screens; frequent change-outs |
| Edge-wrapped mesh | Mesh folded back to encapsulate cut edge; can be spot-welded | Slim profile, cost-effective packs |
| Welded rim | Narrow SS strip TIG/laser welded around edge | Cleanroom/critical cleanliness or high backwash forces |
Hole / Perforation Styles (for guards & hybrids)
Round • Hexagonal • Diamond • Square • Fish-scale • Slotted/Oval — chosen to balance open area, strength, and pressure drop.
Sizes & Tooling Round Filter Discs
Any disc size can be produced to drawing; existing dies/moulds available for many standard diameters to reduce NRE cost.
Rings (OD/ID), ovals, and custom contours can be stamped, laser-cut, or water-jet cut.
Stainless Steel Mesh Size Reference (as provided)
| Mesh No. | Wire Dia (in) | Wire Dia (mm) | Aperture (in) | Aperture (mm) | Open Area (%) | Net Wt (lb)/100 ft² |
|---|---|---|---|---|---|---|
| 2×2 | .063 | 1.60 | .437 | 11.10 | 76.4 | 51.2 |
| 4×4 | .063 | 1.60 | .187 | 4.75 | 56.0 | 104.8 |
| 6×6 | .035 | .89 | .132 | 3.35 | 62.7 | 48.1 |
| 8×8 | .028 | .71 | .097 | 2.46 | 60.2 | 41.1 |
| 10×10 | .025 | .64 | .075 | 1.91 | 56.3 | 41.2 |
| 12×12 | .023 | .584 | .060 | 1.52 | 51.8 | 42.2 |
| 14×14 | .023 | .584 | .048 | 1.22 | 45.2 | 49.8 |
| 16×16 | .018 | .457 | .0445 | 1.13 | 50.7 | 34.5 |
| 18×18 | .017 | .432 | .0386 | .98 | 48.3 | 34.8 |
| 20×20 | .020 | .508 | .0300 | .76 | 36.0 | 55.2 |
| 40×40 | .010 | .254 | .0150 | .38 | 36.0 | 27.6 |
| 60×60 | .007 | .178 | .0097 | .25 | 33.9 | 20.4 |
| 80×80 | .0065 | .165 | .0060 | .15 | 23.0 | 23.2 |
| 90×90 | .005 | .127 | .0061 | .16 | 30.1 | 15.8 |
| 100×100 | .0045 | .114 | .0055 | .14 | 30.3 | 14.2 |
| 120×120 | .0037 | .0940 | .0064 | .1168 | 30.7 | 11.6 |
| 160×160 | .0025 | .0635 | .0038 | .0965 | 36.4 | 5.94 |
| 180×180 | .0023 | .0584 | .0033 | .0838 | 34.7 | 6.7 |
| 200×200 | .0021 | .0533 | .0029 | .0737 | 33.6 | 6.2 |
| 250×250 | .0016 | .0406 | .0024 | .0610 | 36.0 | 4.4 |
| 400×400 | .0010 | .0254 | .0015 | .370 | 36.0 | 3.3 |
| 500×500 | .0010 | .0254 | .0010 | .0254 | 25.0 | 3.8 |
| 635×635 | .0008 | .0203 | .0008 | .0203 | 25.0 | — |
Notes: Values listed are as supplied. Mesh-to-micron depends on wire diameter and weave; for critical retention and pressure-drop targets, confirm with a sample or datasheet.
Ordering Checklist (Quote Faster)
Material & weave (304/316L…; plain/twill/Dutch; or sintered pack)
Diameter(s) (OD/ID for rings), quantity
Layers & sequence (single/multi; control/support meshes)
Closed-edge style (rimmed / edge-wrapped / welded rim)
Micron/mesh target or process cut-point & ΔP limit
Cleaning method (backwash/ultrasonic/solvent/bake), packaging & any compliance docs
Packing & Cleanliness
Closed-edge discs are supplied degreased, dust-protected, and bagged; rimmed discs arrive burr-free for safe handling.
Export packing with moisture barrier/VCI and labeled cartons; palletization available for high volumes.
FAQS Round Filter Discs
What does “closed edge” mean on wire-mesh filter discs?
A closed edge is a rimmed or edge-wrapped perimeter that locks the wire ends, preventing fraying, wire shed, and contamination during handling and backwash.
What materials and weaves are most common?
Stainless steel 304/304L/316/316L are most common. Plain weave, twill, Dutch (filter) weave, and sintered laminates are widely used depending on the micron target.
Are rimmed or edge-wrapped versions available?
Yes. Options include rim-bound (metal ring crimped around the disc), edge-wrapped mesh, and narrow welded rims for high-duty service.
What mesh or micron range do these discs cover?
Typical ranges are ~20–500 mesh, while fine Dutch/sintered stacks can reach a few microns or below (application- and layer-dependent). For cost-optimized builds in non-corrosive service, rims or support plates can be made from Q195 steel (often zinc-plated or powder-coated), with the filtration layer still in stainless.
What Round Filter Discs diameters are typical?
Standard and custom diameters are available; common ranges span small discs for lab/process use up to large packs used in extrusion and screening.
Where are closed-edge discs used?
Plastic and rubber extrusion, polymer melt filtration, general liquid/gas screening in food, chemical, and industrial processes, plus coolant, oil, and air service.
Why choose closed-edge over plain cut discs?
Closed edges prevent wire shed, increase rigidity, improve sealing, and speed automated assembly or change-outs under pressure.
Can discs be single-layer or multi-layer?
Yes. Options include single-layer discs, multi-layer screen packs (spot-welded), and sintered multi-layer discs for precise retention and stiffness.
What standards apply to stainless wire-mesh discs?
Industrial woven wire cloth typically follows recognized mesh tolerances and filter-cloth standards (e.g., ASTM/ISO equivalents), specified per order.
How are discs manufactured and finished?
They can be stamped, punched, laser-cut, or water-jet cut; edges are rimmed or wrapped, then cleaned (often ultrasonic), degreased, and packaged sealed.
What edge materials are used for rims?
Rims are commonly stainless steel or aluminum; carbon steel rims are also used where suitable.
Are these discs reusable and cleanable?
Yes. They support back-flush, solvent or chemical cleaning, ultrasonic cleaning, and thermal methods when compatible with the process media.
How should I specify a disc for quotation?
Provide OD (and ID if a ring), mesh/micron and layer sequence, edge style (rim-bound or edge-wrapped), material/grade, quantity, required cleanliness, and packing.
Do closed-edge Round Filter Discs work with extrusion screen changers?
Yes—closed-edge (rim-bound) round discs are widely used in polymer-melt screen changers; the rigid rim prevents fraying and deformation, enabling quick, clean change-outs. For added stiffness or staged retention, they can be paired with Stainless Steel Perforated Metal Mesh Filter Tubes or perforated support plates to improve flow distribution and service life.
