Stainless Steel Perforated Filter Support Tube
Strong Support. High Open Area. Precise Fit.
Our Stainless Steel Perforated Filter Support Tubes are designed to support filter media, prevent deformation under pressure and maintain efficient fluid flow.
They are widely used inside pleated filter cartridges, wire mesh filters, candle filters, strainer elements and industrial filter assemblies.
Custom diameter, wall thickness, hole size, pitch and open area are available according to your drawing or sample.
Why Use a Perforated Filter Support Tube?
Prevent Filter Media Collapse
The perforated metal tube provides rigid internal support and helps prevent filter media from collapsing under differential pressure.
Maintain High Flow
The perforation pattern is designed to provide sufficient open area for fluid flow while maintaining structural strength.
Better Mechanical Strength
Tube diameter, wall thickness, material and hole pattern can be optimized for the required pressure and operating conditions.
Precise Fit
We manufacture custom filter support tubes according to your dimensions, drawings or existing samples.
Common Specifications
| Parameter | Common Options |
|---|---|
| Material | SS304 / 304L / 316 / 316L/ Copper, Titanium or other metals |
| Tube Diameter | 20–500 mm+ |
| Wall Thickness | 0.5–3.0 mm+ |
| Hole Shape | Round / Square / Slotted / Oblong / Hexagonal |
| Hole Diameter | 1–120mm+ |
| Hole Pitch | Customized |
| Hole Pattern | Straight / Staggered |
| Open Area | 20–70%+ |
| Length | Customized. |
| Surface | Mill / Polished / Electropolished |
| End Type | Open / Closed / Flanged / Customized |
All dimensions can be customized according to the filter design.
Diameter, Hole & Open Area Reference
| Tube OD | Wall Thickness | Hole Diameter | Typical Open Area |
|---|---|---|---|
| 20–30 mm | 0.8–1.0 mm | 2–3 mm | 35–50% |
| 30–50 mm | 1.0–1.2 mm | 3–4 mm | 40–55% |
| 50–80 mm | 1.2–1.5 mm | 4–6 mm | 45–60% |
| 80–120 mm | 1.5–2.0 mm | 5–8 mm | 50–65% |
| 120–150 mm+ | 2.0–3.0 mm+ | 6–10 mm+ | 50–70% |
Open area is a reference range. Actual values depend on hole size, pitch, pattern and tube dimensions.
Hole Patterns
Round Holes
General-purpose solution with a good balance of strength and flow.
Slotted / Oblong Holes
Suitable for applications requiring elongated flow openings.
Staggered Pattern
Can provide higher open area and efficient fluid passage.
Custom Pattern
Manufactured according to customer drawings.
Applications
Our perforated filter support tubes are used for:
--Pleated filter cartridges
--Wire mesh filter elements
--Candle filters
--Strainer elements
--Hydraulic filters
--Oil filters
--Chemical filtration
--Water filtration
--Gas filtration
--Polymer melt filtration
--Plastic extrusion filtration
What Makes Our Filter Support Tube Different?
Designed for Filtration — Not Just Perforated Pipe
We consider the complete relationship between:
Tube Diameter + Wall Thickness + Hole Size + Pitch + Open Area + Pressure + Flow
rather than simply supplying a standard perforated tube.
Custom Manufacturing
We can manufacture according to:
--Drawing
--Existing sample
--Filter model
--Dimensions
--Application requirements
OEM Replacement
Need to replace an existing filter core?
Send us your old support tube or filter element.
We can reproduce the required dimensions and perforation structure.
Need a Custom Filter Support Tube?
Send us your:
Drawing / Sample / Dimensions / Application
We can help determine the appropriate:
Material → Diameter → Wall Thickness → Hole → Pitch → Open Area
Request a Quote
Custom sizes and perforation patterns available.
