INDUSTRY COMPONENT

Tube Sheet

Tube sheet is a critical structural component in bag filter houses that supports and seals filter bags while separating clean and dirty air chambers.

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Component Specifications

Definition
A tube sheet is a perforated plate or panel installed within a bag filter house (dust collector) that serves multiple essential functions: it provides mounting points for filter bags through precisely drilled holes, creates a sealed barrier between the contaminated inlet chamber and clean air outlet chamber, supports the weight of filter bags and collected dust cake, and maintains structural integrity under pressure differentials during filtration and cleaning cycles. The component ensures proper bag alignment, prevents bag collapse, and facilitates efficient dust collection in industrial air pollution control systems.
Working Principle
The tube sheet operates by creating a physical separation between dirty and clean air streams. Contaminated air enters the dirty air chamber, passes through filter bags mounted on the tube sheet, where particulate matter is captured on the bag surfaces. Clean air then flows through the tube sheet holes into the clean air chamber for discharge. During pulse-jet cleaning, compressed air is injected through the tube sheet to dislodge accumulated dust from the filter bags.
Materials
Typically carbon steel (ASTM A36, A572), stainless steel (304, 316L for corrosive environments), or aluminum alloys. Thickness ranges from 3mm to 12mm depending on filter size and pressure requirements. Surface treatments include galvanization, powder coating, or epoxy painting for corrosion resistance.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flatness≤3mm/m to prevent bag misalignment
Hole PatternSquare or triangular pitch arrangement
Hole DiameterTypically 120-160mm for standard filter bags
Hole Tolerance±0.5mm for proper bag seal
Pressure RatingDesigned for -5000 to +5000 Pa differential pressure
Temperature Range-20°C to +200°C depending on material

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 16890, DIN 24163, ASME BPVC Section VIII

Parent Products

This component is used in the following industrial products

Bag Filter House

The structural housing that contains filter bags and provides the enclosure for dust collection in an off-gas cleaning system.

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Engineering Analysis

Risks & Mitigation
  • Hole misalignment causing bag wear
  • Corrosion in humid environments
  • Fatigue cracking from pulse-jet cleaning cycles
  • Thermal expansion mismatch with housing
  • Improper sealing leading to bypass leakage
FMEA Triads
Trigger: Inadequate material thickness for pressure loads
Failure: Plate deformation or cracking
Mitigation: Implement finite element analysis (FEA) during design, use thicker plates for high-pressure applications, add stiffening ribs
Trigger: Poor hole machining tolerance
Failure: Bag seal leakage and dust bypass
Mitigation: Use CNC machining with ±0.3mm tolerance, implement quality checks with go/no-go gauges, specify proper gasket materials
Trigger: Corrosion from acidic condensation
Failure: Reduced structural integrity and hole enlargement
Mitigation: Select corrosion-resistant materials, apply protective coatings, install insulation to prevent condensation, implement regular inspection protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Hole diameter: ±0.5mm, Hole position: ±1.0mm, Flatness: 2mm/m maximum deviation
Test Method
Dimensional verification with coordinate measuring machine (CMM), pressure testing per ASME Section VIII, leak testing with bubble solution or pressure decay method

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 Tube Sheet

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Epowermetals
Zhejiang, CN
Also makes: Butterfly Valve, Heat Exchanger, Steel Forging and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry
Longan Flange
Zhejiang, CN
Also makes: Pressure Vessel, Forged Steel Flange
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry
SEATHER TECHNOLOGY
Jiangsu, CN
Also makes: Heat Exchanger
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary function of a tube sheet in bag filter houses?

The tube sheet serves three main functions: supporting filter bags in precise alignment, creating a sealed barrier between contaminated and clean air chambers, and providing structural stability during filtration and cleaning cycles.

How does tube sheet hole pattern affect filter performance?

Hole pattern (square or triangular pitch) determines filter bag density and spacing, affecting air distribution, cleaning efficiency, and maintenance accessibility. Proper spacing prevents bag contact during cleaning and ensures uniform air flow.

What materials are suitable for corrosive environments?

Stainless steel grades 316L or 904L offer excellent corrosion resistance for acidic or chloride-containing environments. Epoxy-coated carbon steel or fiberglass-reinforced plastic (FRP) are alternatives for specific chemical exposures.

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.

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