Core Tube: Temperature Range -20°C to 120°C, Length 250-1000 mm

Component Specifications

Definition

The core tube is the central cylindrical component within a filter cartridge that provides structural support to the filtration media (such as pleated paper, mesh, or synthetic fibers). It maintains the media's shape and spacing during operation, prevents collapse under pressure differentials, and serves as the central channel for filtered fluid collection and discharge. Core tubes feature precise perforation patterns to optimize flow distribution while retaining media particles.

Working Principle

Acts as a rigid backbone for the filtration media, allowing fluid to pass through the media into the central channel while supporting the media against pressure forces. The perforated design creates uniform flow paths and prevents media deformation.

Materials

Typically made from polypropylene (PP), stainless steel (304/316), galvanized steel, or aluminum. Material selection depends on chemical compatibility, temperature range, and pressure requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	250-1000 mm
Outer Diameter	25-150 mm
Wall Thickness	1-3 mm
Pressure Rating	Up to 10 bar
Perforation Size	1-6 mm
Temperature Range	-20°C to 120°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 2941, ISO 3724, DIN 24550

Parent Products

This component is used in the following industrial products

Filter Cartridge/Media

A replaceable filtration element that physically removes contaminants from water in circulation systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Media collapse under high differential pressure
Chemical incompatibility causing corrosion
Improper perforation leading to flow restriction

FMEA Triads

Trigger: Material fatigue or corrosion
Failure: Tube collapse or rupture
Mitigation: Regular inspection and material compatibility verification

Trigger: Incorrect perforation design
Failure: Uneven flow distribution or media damage
Mitigation: Follow standardized perforation patterns and flow testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm on diameter, ±1 mm on length

Test Method

Pressure decay test, flow uniformity test, material certification

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Core Tube

Manufacturer profiles associated with Core Tube.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of perforations in a core tube?

Perforations allow filtered fluid to enter the central channel while maintaining structural integrity and preventing media bypass.

Can core tubes be reused after media replacement?

Yes, if undamaged and properly cleaned, core tubes are typically reusable with new filtration media.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Core Tube