Mesh-lined strainer baskets
Perforated baskets with fine woven liners, defined seam continuity and retaining rings.
Product detailsDrawing-based manufacturing
Perforated metal screens
Perforated panels, support cores and removable baskets use a controlled hole pattern in formed metal sheet. Specify the hole field, solid margins, support span and finished shape for screening, media support and strainer service.
- Hole designs
- Round · slot · square
- Pattern
- Hole + pitch + stagger
- Forms
- Panel · basket · support core
Metal filtration componentsPerforated metal screen configurations
Construction
How perforated screens are made
- Round-hole geometryFor round holes on equal 60° staggered pitch: open area = 90.69 × (diameter / pitch)² percent. 3 mm holes on 5 mm pitch give about 32.6%.
- Supporting fine mediaBacking holes leave short unsupported spans beneath mesh. Size them for both drainage and the strength of the finer layer.
- Margins and seamsSolid borders, weld bands and mounting areas reduce whole-part open area. Allow enough solid material for rolling and joining.
- PunchingHoles punched in plate on a staggered, straight or angled pitch, with the tool set by hole size and thickness.
- Liner and core interfaceSet the support-hole size and attachment pattern around the finer media. Keep welds, sharp edges and clamping features outside the required active filtering field.
01Round-hole geometry
02Supporting fine media
03Margins and seams
04Punching
05Liner and core interface
Separate the opening pattern from its structural task
Hole diameter, center pitch and row layout define the repeated pattern. Sheet thickness and the metal ligaments between holes define the remaining structure. For fine-media support, the finer layer sets the filtration grade; the perforated core distributes flow and limits the unsupported span beneath that layer.
A pattern percentage describes the perforated field. The whole part also contains borders, weld bands, fixing points and covered surfaces. Use the drawing to calculate the exposed field after mounting, and keep that result distinct from the theoretical opening percentage of an endless pattern.
Carry the drawing through rolling, welding and assembly
Reserve an unperforated strip along a rolled seam so the joint has continuous metal. Locate the seam against end rings, mounting features and the finer liner. The solid-weld-margin example shows why the unperforated zone belongs on the original drawing.
After forming, check roundness or flatness, edge condition and support contact. Baskets and temporary strainers also require a defined removal route and debris capacity. Link area selection to pressure-drop monitoring and planned cleaning access in the strainer guide.
Compare perforated metal screens
An open-area percentage without a pattern is incomplete.
| Construction | Application and fit | Confirm first | Find a product |
|---|---|---|---|
| Flat perforated screens | The component remains flat in the installed assembly. | Outline, hole pattern, thickness, margins, flatness and edge. | Filter matching products |
| Perforated support tubes | The component needs a cylindrical structural or drainage wall. | Diameter, length, wall, seam, perforation and pressure direction. | Filter matching products |
| Perforated baskets | The screen must collect solids in a removable body. | Seat, body geometry, hole pattern, bottom, handle and clearance. | Filter matching products |
| Framed perforated panels | A larger perforated screen requires a defined frame or supports. | Panel, frame, clear opening, fixing points, pattern and load. | Filter matching products |
Perforated panels, support cores and removable baskets
Choose by finished geometry
Perforated metal screen configurations
Define the finished form and structural role before selecting hole geometry, pitch, margins and sheet thickness.
01
Flat perforated screens
Flat perforated blanks for screening, guarding and flow distribution.
View matching products →
02
Perforated support tubes
Rolled perforated cylinders used as structural supports or coarse screens.
View matching products →03
Perforated baskets
Formed perforated bodies for solids retention and removable straining.
View matching products →04
Framed perforated panels
Perforated sheets integrated with frames, supports or mounting features.
View matching products →Perforated metal screens
Find a product
8 products
Perforated filter support cores
A perforated filter support core is the load-bearing and drainage structure behind a flexible or pleated filtering medium.
Product details
Stainless Steel Flanged Filter Elements
Kaifil manufactures stainless steel flanged filter cartridges with wedge wire, woven mesh, sintered mesh, perforated metal or pleated filtering bodies.
Product details
Perforated strainer baskets
Removable stainless steel baskets combine a perforated shell, closed bottom, seating rim and lifting handle.
Product details
Temporary cone strainers
Pointed start-up strainers with perforated shells and mesh liners.
Product details
Truncated cone strainers
Short tapered start-up strainers with defined large and small diameters, end closures and flange seats.
Product details
Flat startup strainers
Flat perforated and mesh-lined start-up strainers with defined active area, support plate, gasket land and identification tab.
Product details
Perforated screen panels
Perforated screen panels use a patterned metal plate where stiffness and repeatable geometric openings are required.
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What we need to quote a perforated screen
A perforated screen is specified on one controlled drawing — hole, pitch, pattern, ligament, thickness, perforated zone and tolerances together.
Hole shape and size
Defines the opening
Pitch and pattern
Establishes open area and ligaments
Sheet thickness and alloy
Affects strength and fabrication
Blank size and margins
Supports joining and installation
Final form and load direction
Guides forming and structural review
Edge and surface condition
Defines finish and handling
Check four interfaces from blank to installed screen
| Interface | Drawing control | Function | Finished-part check |
|---|---|---|---|
| Hole field | Diameter, pitch and row direction | Opening geometry and drainage | Opening size and pattern registration |
| Solid margin | Border and weld-band width | Joining and mounting land | Continuous solid material at the joint |
| Rolled seam | Seam position and finished diameter | Cylindrical fit and load path | Roundness, joint and end alignment |
| Fine liner | Coverage and attachment locations | Retention layer over a support core | Contact, protected edges and sealing |
Perforated metal screens
Applications
Perforated metal provides rigid screening walls, backing for fine media and formed strainer bodies. The hole pattern serves the required separation or drainage task, while the sheet and supports carry the installed loads.
Filter cores
Inner supports and protective sleeves beneath finer media.
Strainer baskets
Rigid walls with or without mesh liners.
Screen panels
Coarse screens with mounting margins and repeatable hole patterns.
Beneath a finer medium
Support cores carrying differential-pressure load under woven or sintered media, where the support opening is structural and never the micron rating.
Check the pattern and finished shape
Perforation and forming need separate dimensional checks.
Holes
Check diameter, pitch and stagger direction.
Edges
Inspect burr direction and unperforated margins.
After forming
Measure flatness, roundness and seam position.
Assembled flow path
Check seam continuity, liner attachment and seating contact. Verify that the installed opening field matches the drawing after rings, seals and supports cover their allocated zones.
Perforated metal screens
Technical resources
Technical guide
Perforated open area and structural support
Calculate the repeated-pattern opening percentage and then deduct installed coverage.
Perforated open area and structural support→Technical guide
Strainer area, pressure drop and maintenance
Size a strainer with exposed area, debris load, pressure drop and cleaning access.
Strainer area, pressure drop and maintenance→Perforated Filter Element with a Solid Welding Margin
See how a solid welding strip joins the hole field to a reliable finished seam.
Perforated Filter Element with a Solid Welding Margin→Perforated metal screens
Questions before ordering
How is open area balanced with stiffness?
Set the required passage area together with ligament width, sheet thickness, curvature and support spacing. The chosen combination provides the flow path and the structural load path.
How is the filtration opening defined?
For a bare screen, specify the actual hole geometry. For a lined assembly, identify the finer retaining layer separately and specify the core as its drainage and structural support.
Why specify thickness with the hole pattern?
Thickness, hole size and ligament width define the punching arrangement and the remaining metal section. Include the finished edge and deburring requirement with those dimensions.
Where does an unperforated weld band go?
Place it along the joining edge and dimension it from the hole field. The band gives the seam continuous material and keeps the joint clear of the active perforations.
What is checked after rolling a support core?
Check finished diameter, roundness, seam alignment, end seating and the media contact surface. These checks connect the original flat pattern to the assembled filter.
Related products and guidance
Technical enquiry
Define the dimensions, media, joints and inspection records before confirming the order.