400×2800 Dutch Weave Wire Mesh
400×2800 is an exact-count Dutch weave enquiry, not a self-contained performance specification. Compare it using both wire diameters, weave subtype, alloy, filtration-rating method, pressure duty and agreed inspection data.
Quick Answer: Is 400×2800 Automatically Finer?
No. A larger count designation alone does not prove a smaller effective pore, higher retention efficiency or lower flow. Wire diameters, interlacing, compaction and the rating method all influence the result. Compare complete constructions, not only 400×2800 versus 325×2300 Dutch weave mesh.
Count
Identifies the directional wire-count notation.
Wire diameters
Complete the warp and weft geometry.
Weave subtype
Defines how the wires interlace and pack.
Rating method
Explains what a pore or retention value means.
Verify the Construction Before Comparing Prices
The purchase description should explicitly state the direction convention, warp and weft wire diameters, plain/twill/reverse Dutch designation, alloy and tolerances. Count numbers alone cannot confirm equivalence between suppliers.
Review the broader Dutch weave wire mesh family and the dedicated twill Dutch weave construction guide.
400×2800 Technical Comparison Checklist
Use the same evidence set for every quotation so price, geometry and filtration claims can be compared on a consistent basis.
| Comparison point | Evidence to request | Risk if omitted |
|---|---|---|
| Media identity | 400 × 2800 direction, both wire diameters and weave subtype | Non-equivalent constructions compared as identical |
| Filtration claim | Pore/retention value, efficiency definition and method | A micron number is accepted without meaning |
| Mechanical duty | Flow direction, differential pressure, support and cleaning load | Fine media is used without adequate support review |
| Material | Alloy and compatibility with process and cleaning | Material selected from a generic label |
| Acceptance | Sample/data sheet, dimensions, tolerances and inspection plan | No objective basis for receiving inspection |
Sample Approval and Receiving Inspection
1. Freeze the notation
Record warp/weft direction and units.
2. Record geometry
Confirm both wire diameters and weave.
3. Define performance
Agree the rating basis and test evidence.
4. Approve format
Confirm roll, layers, support, seam and edge.
5. Define acceptance
State tolerances, sampling and inspection records.
Filtration Rating and Process Duty
Dutch weave does not have a simple square aperture. A reported value may describe pore geometry or a retention test. Read the Dutch weave micron-rating guide and request the method behind the number.
Provide the medium, temperature, viscosity, target contaminant, throughput, normal/maximum differential pressure, flow direction and cleaning or replacement method.
Material, Support and Finished Formats
304 stainless steel
Consider only when compatible with the process and cleaning.
316 / 316L
Review for the requested chemistry and fabrication conditions.
Support layers
Define coarse mesh or perforated backing and flow direction.
Finished parts
Provide drawing, layers, seam, edge, dimensions and tolerances.
Use the 304 vs 316 selection guide. For fabricated formats, compare filter discs and filter tubes.
Real Fabrication Examples
Formed mesh tubes
Cylinder inspection
Custom filter shapes
These are Maidong fabricated-mesh examples showing possible downstream formats. They do not claim that every pictured part uses the exact 400×2800 construction; final media and assembly details must be stated in the drawing.
Typical Evaluation Contexts
Polymer melt filtration
Match retention, melt conditions, pressure and screen-change format.
Hydraulic and oil filtration
Define fluid, contaminant, pressure cycle and cleaning.
Chemical process filtration
Confirm alloy compatibility and filtration method.
Precision filter assemblies
Control layers, support, flow direction and joining details.
What to Send With Your RFQ
- 400×2800 direction convention and weave subtype
- Warp and weft wire diameters with units
- Alloy and compatibility requirements
- Filtration target, rating definition and test method
- Medium, temperature, flow, differential pressure and cleaning
- Roll dimensions or finished-part drawing
- Support layers, seam, edge, tolerances, inspection and quantity
400×2800 Dutch Weave Mesh FAQ
It is a directional warp-and-weft count designation under an agreed convention. It must be completed by both wire diameters, the weave subtype, alloy, rating basis and tolerances.
Not necessarily. A higher count does not by itself prove a smaller effective pore or better retention because wire diameters, weave geometry and rating method also differ. Compare complete constructions and test data.
Do not assign a universal micron value from the count. Request construction-specific pore or retention data together with the method, efficiency definition and sample or inspection requirement.
For a critical filtration duty, sample review or an agreed technical data sheet can reduce ambiguity. Record count convention, both wire diameters, weave, material, rating basis and acceptance criteria before production.
A fine layer may be combined with coarse mesh or perforated support and fabricated into discs, tubes or assemblies. State layer order, flow direction, support, seam, edge, dimensions and tolerances.
Provide the full construction, alloy, filtration target and test basis, process medium, temperature, pressure, cleaning, roll or finished-part dimensions, tolerances, inspection and quantity.
Verify the Construction Before Ordering
Send the complete geometry, rating basis, process duty, finished format and acceptance criteria for review.