Industry-Verified Manufacturing Data (2026)

Tube Bundle

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Tube Bundle used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Tube Bundle is characterized by the integration of Tubes and Tube Sheets. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A core assembly of multiple parallel tubes arranged within a heat exchanger, designed to maximize surface area for efficient thermal energy transfer between fluids.

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Product Specifications

Technical details and manufacturing context for Tube Bundle

Definition
The Tube Bundle is the primary heat transfer element within a Heat Transfer Assembly, such as a shell-and-tube heat exchanger. It consists of a collection of tubes, typically held in place by tube sheets and supported by baffles, through which one fluid flows. The other fluid flows around the outside of the tubes within the shell. Its design directly determines the efficiency, capacity, and pressure drop characteristics of the entire assembly.
Working Principle
Thermal energy is transferred through the tube walls via conduction. One fluid (the tube-side fluid) flows through the interior of the tubes, while a second fluid (the shell-side fluid) flows over the exterior of the tubes. Heat moves from the hotter fluid to the cooler fluid across the tube material, facilitated by the large surface area provided by the bundle.
Common Materials
Stainless Steel, Carbon Steel, Copper Alloys, Titanium
Technical Parameters
  • Tube Outer Diameter (OD) and thickness (BWG/gauge), defining the basic tube size. (mm) Per Request
Components / BOM
  • Tubes
    Provide the primary conductive surface for heat transfer between the two fluid streams.
    Material: varies (e.g., stainless steel)
  • Tube Sheets
    Securely hold the ends of the tubes in place, providing a pressure boundary between the shell-side and tube-side fluids.
    Material: Carbon steel or alloy steel
  • Baffles
    Support the tubes, maintain tube spacing, and direct the shell-side fluid flow across the tube bundle to enhance heat transfer and reduce vibration.
    Material: Carbon steel
  • Tie Rods & Spacers
    Hold the assembly of baffles together at the correct spacing along the length of the bundle.
    Material: Carbon steel
Engineering Reasoning
0-25 bar differential pressure, 20-300°C temperature gradient
35 bar differential pressure causing tube wall yield stress of 250 MPa, 350°C thermal gradient exceeding material creep limit
Design Rationale: Thermal fatigue from cyclic stress exceeding 0.2% yield strength (207 MPa for 316L SS), flow-induced vibration at Strouhal numbers >0.2 causing resonant tube failure
Risk Mitigation (FMEA)
Trigger Corrosion under insulation at chloride concentration >25 ppm
Mode: Stress corrosion cracking initiating at tube-to-tubesheet joints
Strategy: Cathodic protection maintaining potential <-0.85V vs Ag/AgCl, thermal spray aluminum coating 150μm thickness
Trigger Fluid velocity exceeding 3 m/s causing erosion-corrosion
Mode: Wall thinning below minimum thickness of 1.65mm for 19mm OD tubes
Strategy: Hardened Inconel 625 sleeves at inlet regions, flow straighteners maintaining Reynolds number <10,000

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tube Bundle.

stainless steel tube bundle heat exchanger custom tube bundle assembly for machinery industrial heat exchanger tube bundle replacement carbon steel tube bundle with baffles titanium tube bundle corrosion resistant

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Heat Transfer Assembly
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Reboiler
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Waste Heat Boiler
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Heat Exchanger (Condenser)
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Evaporator / Process Heat Exchanger
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 100 bar (dependent on tube thickness and arrangement)
flow rate: 0.5-5 m/s (tube-side fluid velocity)
temperature: -50°C to 400°C (depending on tube material)
slurry concentration: Up to 30% solids by weight (with erosion-resistant materials)
Media Compatibility
✓ Water/steam systems ✓ Oil and gas process fluids ✓ Chemical process liquids
Unsuitable: Highly corrosive acids (e.g., concentrated sulfuric acid) without specialized alloy tubes
Sizing Data Required
  • Required heat transfer duty (kW)
  • Fluid properties (density, viscosity, specific heat)
  • Available pressure drop allowance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced perforation
Cause: Chemical attack from process fluids, inadequate material selection for service environment, or improper pH control leading to wall thinning and eventual leakage.
Fouling and scaling
Cause: Accumulation of deposits (mineral scales, biological growth, or particulate matter) on tube surfaces, reducing heat transfer efficiency and increasing pressure drop.
Maintenance Indicators
  • Visible external corrosion or weeping at tube-to-tubesheet joints
  • Abnormal pressure drop increase across the bundle or reduced thermal performance
Engineering Tips
  • Implement regular chemical cleaning programs and water treatment to minimize scaling and fouling
  • Use corrosion-resistant materials (e.g., stainless steel, titanium, or coatings) matched to specific process conditions and conduct periodic thickness testing

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A213/A213M - Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes ASME BPVC Section VIII - Rules for Construction of Pressure Vessels
Manufacturing Precision
  • Tube OD: +/-0.1mm
  • Tube wall thickness: +/-10% of nominal thickness
Quality Inspection
  • Hydrostatic Pressure Test
  • Eddy Current Testing (ECT) for material integrity

Factories Producing Tube Bundle

Verified manufacturers with capability to produce this product in China

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✓ 98% Supplier Capability Match Found

S Sourcing Manager from Singapore Jan 16, 2026
★★★★★
"Testing the Tube Bundle now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Procurement Specialist from Germany Jan 13, 2026
★★★★☆
"Impressive build quality. Especially the technical reliability is very stable during long-term operation. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Brazil Jan 10, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Tube Bundle meets all ISO standards."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

7 sourcing managers are analyzing this specification now. Last inquiry for Tube Bundle from India (1h ago).

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Frequently Asked Questions

What materials are commonly used for tube bundles in heat exchangers?

Tube bundles are typically manufactured from stainless steel, carbon steel, copper alloys, or titanium, selected based on factors like corrosion resistance, thermal conductivity, and fluid compatibility.

How does a tube bundle improve heat exchanger efficiency?

A tube bundle maximizes surface area through multiple parallel tubes, facilitating efficient thermal energy transfer between fluids while components like baffles direct flow to enhance heat exchange.

What are the key components of a tube bundle assembly?

Key components include tubes, tube sheets, baffles, and tie rods with spacers, which work together to secure the structure and optimize fluid dynamics for reliable performance.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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