Perforated filter support cores
A perforated filter support core is the load-bearing and drainage structure behind a flexible or pleated filtering medium.
Product detailsDrawing-based manufacturing
Filter cylinders and tubes
Woven-mesh sleeves, perforated support tubes and slotted screen cylinders for radial flow, internal support and equipment inserts. Diameter, seam construction and which surface carries pressure determine the right tube.
- Geometry
- Outside diameter · bore · active length
- Seam
- Butt-welded or overlapped construction
- Flow
- Outside-in or inside-out
Metal filtration componentsFilter cylinder and tube configurations
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Filter cylinder and tube configurations
Define the cylindrical envelope, seam and end treatment before selecting the screen material and support arrangement.
Filter cylinders and tubes
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4 products
Woven mesh filter cylinders
Open-ended welded mesh cylinder for removable screens and pump protection.
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Wedge wire filter cylinders
Self-supporting slotted cylinder for outside-in or inside-out screening.
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Laser-slotted filter tubes
Metal tube with longitudinal or circumferential laser-defined slots.
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Clear filters
Define the cylindrical flow surface
A filtering cylinder and a support core may share a shape but perform different jobs.
Diameter and ovality
Give the fitted bore or outside diameter and where it is measured; a local seam can affect insertion.
Active length
Separate screened length from solid end bands, caps and flanges.
Seam and ends
Identify longitudinal seam position, weld buildup and whether the ends are open, capped or flanged.
Core versus screen
A perforated tube with millimetre-size holes usually supports finer media; it is not a micron-rated filter by itself.
Construction
Rolling, seams and radial loads
- Rolling directionWoven cloth orientation and sheet stiffness affect roundness. Measure the finished cylinder after joining rather than using the flat blank alone.
- Seam locationAn overlap seam adds local thickness; a welded butt seam can reduce that step. Keep seam and weld details clear of seals or close-fitting seats.
- Pressure directionOutside-in flow can collapse a thin cylinder. Inside-out flow loads the seam in expansion; reverse cleaning adds a second design case.
01Rolling direction
02Seam location
03Pressure direction
Compare filter cylinders and tubes
Woven-mesh sleeves, perforated support tubes and slotted screen cylinders for radial flow, internal support and equipment inserts. Diameter, seam construction and which surface carries pressure determine the right tube.
| Construction | Application and fit | Confirm first | Find a product |
|---|---|---|---|
| Open-ended cylinders | Both ends remain open and the equipment provides retention. | OD or ID priority, length, seam, edge and clearance. | Filter matching products |
| Perforated support cores | Fine media needs a rigid drainage and load-bearing tube. | Diameter, length, wall, perforation, open area and collapse direction. | Filter matching products |
Filter cylinders and tubes
Applications
Cylinders serve as filtering surfaces and supporting parts.
Process housings
Mesh sleeves and capped tubes for removable radial-flow inserts.
Cartridge cores
Perforated tubes carry the load beneath pleated or fine mesh media.
Vessel internals
Slotted and wedge-wire cylinders retain solids or process media with the specified flow direction.
Check the cylinder after joining
The welded part, not its flat pattern, must fit the equipment.
01RoundnessMeasure diameters at the ends and along the tube.
02Seam continuityInspect holes, cracks, loose wires and local weld projections.
03End geometryCheck squareness, end-band length and the fitted flange or cap.
Filter cylinders and tubes
Technical resources
Technical guide
Perforated open area and structural support
Calculate theoretical opening area, then check ligaments, support spacing and installed coverage.
Read guide→Technical guide
Filter rating, aperture and beta ratio
How to compare woven openings, porous-media claims and test-rated filter elements without treating every micron number as equivalent.
Read guide→Filter cylinders and tubes
Questions before ordering
Is a perforated tube a complete filter element?
Often it is only a core or protective sleeve. If the perforations themselves provide straining, the hole size defines the geometric screen opening.
Which dimensions identify a replacement cylinder?
Outside and inside diameters, total and screened lengths, end details, seam, material, wall or mesh construction, and flow direction.
Should the tube be supported from the inside or outside?
Support follows flow direction and collapse risk. Show normal and reverse-flow arrows and the maximum differential pressure so the core, seam and end joints can be arranged correctly.
Related products and guidance
Technical enquiry
Define the dimensions, media, joints and inspection records before confirming the order.