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Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Specifications
Model Number :
Shell and Tube Heat Exchanger
Operating Pressure :
Up to 36 MPa
MOQ :
YUHONG
Delivery Time :
30-180 DAYS
Payment Terms :
L/C
Price :
Negotiable
Certification :
TAMA/ASME VIII-1/ GB/T 151
Thermal Design :
HTRI software calculated
Supply Ability :
2000 sets/ year
Brand Name :
YUHONG
Tubediameter :
Typically 12.7 mm to 25.4 mm
Place of Origin :
China
Shell Diameter :
Custom Design
Packaging Details :
Sea Worthy Package
Description
Shell and Tube Heat Exchanger Tube Bundle, Fixed / U-Tube / Floating Head, Design Pressure Up to 35 MPa | Per TEMA / ASME VIII-1 / GB/T 151
Product Overview

The tube bundle is the removable or fixed core assembly within a shell and tube heat exchanger, comprising tubes, tube sheets, baffles, tie rods, and spacers. This assembly is the primary heat transfer interface between two fluid streams - one flowing inside the tubes (tube side) and the other across the external tube surfaces (shell side).

The tube bundle is designed and manufactured per TEMA Class C (commercial), B (chemical), or R (refinery), ASME Section VIII Division 1 or Division 2, and GB/T 151 for domestic applications. This product is supplied as a replacement bundle, a spare bundle, or as part of a new heat exchanger assembly.

Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Tube Bundle Types - Structural Classification
Fixed Tube Sheet (TEMA L / M / N)
  • Tubes are expanded or welded into tube sheets at both ends
  • Shell and tube sheets are integrally welded or bolted to the shell
  • Thermal expansion is accommodated by an expansion joint installed on the shell when ΔT between tube and shell exceeds the allowable for the material combination
  • Applicable for: Clean shell-side fluids, temperature differential ≤ 60°C (carbon steel) / ≤ 40°C (stainless steel) without expansion joint; non-fouling services
U-Tube Bundle (TEMA U)
  • Tubes are bent into a U-shape, with both ends fixed to a single tube sheet
  • Each tube is free to expand independently, accommodating large temperature differentials without requiring a shell expansion joint
  • Applicable for: High thermal differential (ΔT up to 200°C), high-pressure gas service, hydrogen service, thermal shock conditions
  • Limitation: Individual tube cleaning is not possible - only chemical cleaning; U-bend radius ≥ 2* tube OD per TEMA RCB-4.52
Floating Head Bundle (TEMA P / S / T / W)
  • One tube sheet is fixed (stationary) and the other is floating, allowing the bundle to expand independently from the shell
  • Rear head is removable, enabling bundle extraction for mechanical cleaning
  • Applicable for: Severe fouling services where mechanical cleaning is required, large ΔT, high shell-side fouling factor (> 0.0005 m²*K/W per TEMA table)
  • Limitation: Higher cost, more flange joints, greater tube sheet thickness requirement
Core Components - Geometric and Functional Specifications
Tubes
Parameter Range Standard / Note
Tube OD 12.7mm - 50.8mm (1/2" to 2") Smaller OD for higher pressure; larger OD for fouling service
Tube wall thickness 0.9mm - 5.0mm Selected per ASME VIII-1 UG-27 for internal pressure; gauge thickness per ASTM B730
Tube length (straight) 1.5m - 12.0m Standard TEMA lengths: 2.44m, 4.88m, 6.10m, 9.75m
Tube pitch 1.25* - 2.0* tube OD Triangular pitch (30°) for higher heat transfer; square pitch (90°) for mechanical cleaning access
Tube arrangement Triangular (30°/60°) / Square (90°/45°) Triangular gives highest surface area per shell cross-section; square allows rod or brush cleaning access to shell side
Tube Sheets
Parameter Range / Value Standard / Note
Thickness 20mm - 300mm Per TEMA RCB-4.3 - selected to withstand tube-to-tubesheet joint loads and shell/tube side pressure independently
Hole diameter tolerance H11 (e.g., Ø25.2mm +0.13/0) Per ISO 286 / TEMA standard
Hole finish Ra ≤ 1.6μm (expanded) / Ra ≤ 3.2μm (welded) Expansion requires finer finish to achieve pull-out strength
Ligament (bridge between holes) Minimum 0.8* hole diameter Per ASME VIII-1 Appendix A - to prevent tube sheet deformation
Tube sheet material CS / SS clad / alloy / solid Selected per tube-side and shell-side fluid compatibility
Baffles and Support Plates
Parameter Range / Value Standard / Note
Baffle type Segmental (20-35% cut) / Double segmental / Helical / No-baffle (full supports only) Segmental cut percentage selected per TEMA for cross-flow velocity
Baffle spacing 0.2* - 1.0* shell ID Determined by unsupported tube length limit and required cross-flow velocity
Maximum unsupported tube length CS: ≤ 36* tube OD; SS: ≤ 30* tube OD Per TEMA RCB-4.2 to prevent tube vibration and sag
Baffle thickness 3.0mm - 16mm Based on shell side pressure differential and support span
Tie rod diameter M8 - M24 (or equivalent imperial) Minimum 4 rods per bundle; diameter selected per TEMA RCB-4.6 to support bundle weight
Tube-to-Tubesheet Joint Types
Joint Type Method Pull-Out Strength (Min) Applicable Service Inspection Method
Expanded only Hydraulic expansion at 160-220 MPa, hold 5-8s ≥ 20 MPa (CS) / ≥ 25 MPa (SS) Non-toxic, non-cyclic service; clean fluids Hydrostatic test + pull-out test on first article
Welded only (seal weld) GTAW (TIG) fillet weld leg 1.5-2.0mm N/A (mechanical retention from weld only) High-pressure gas, hydrogen service 100% PT per ASME VIII-1 UW-51
Weld + expand (combined) Seal weld + hydraulic expansion at 160-200 MPa ≥ 25 MPa Cyclic thermal service (> 500 cycles/year), high pressure, toxic fluids 100% PT + hydrotest + pull-out test on first article
Material Selection - Per Service Condition
Tube Material Options
Material Spec Temp Range Chloride Limit Application Notes
Carbon steel SA-179 / SA-106 Gr.B ASTM A179 / A106 -20°C to +425°C Not applicable Water, oil, steam, clean hydrocarbons
Carbon steel 20# GB 8163 -20°C to +425°C Not applicable Domestic standard equivalent to SA-106
Stainless 304L / 304 ASTM A213 TP304L -196°C to +600°C ≤ 200ppm Mildly corrosive fluids, clean steam, food grade
Stainless 316L / 316 ASTM A213 TP316L -196°C to +500°C ≤ 200ppm Organic acids, salt solutions, chloride-containing hydrocarbons
Duplex 2205 ASTM A789 S32205 -40°C to +280°C ≤ 300ppm at 80°C Offshore, seawater, chlorides, CO₂/H₂S service
Titanium Gr.2 ASTM B338 -40°C to +230°C Up to 20,000ppm Seawater, brine, high-chloride environments
Alloy 800H / 825 / 625 ASTM B163 -196°C to +600°C Up to 500ppm High-temperature corrosive service, sour gas, amine units
Tube Sheet Material (Clad or Solid)
  • Carbon steel SA-516 Gr.70 - for non-corrosive tube-side fluids
  • Stainless clad (304L/316L over CS) - for corrosive tube-side fluids with high pressure (cladding thickness min. 3mm per ASME VIII-1 UW-13)
  • Solid stainless 304L / 316L - for fully corrosive service
  • Duplex / Titanium - for offshore and seawater service
  • Alloy overlay (Inconel 625 weld overlay, min. 3mm) - for severe sour or chloride service
Operational Parameters - Tube Bundle Service Rating
Parameter Range Notes
Tube-side design pressure Vacuum (-0.1 MPa) to 35 MPa Higher pressure requires seamless tube and heavy wall tube sheet
Shell-side design pressure Vacuum (-0.1 MPa) to 10 MPa (standard) Dependent on shell construction and flange rating
Tube-side design temperature -196°C to +600°C Material dependent; cryogenic service requires impact testing per ASME VIII-1 UG-84
Shell-side design temperature -40°C to +450°C Dependent on shell material and gasket type
Tube-side fluid Liquids, gases, condensing vapors, two-phase mixtures Compatible with tube material
Shell-side fluid Liquids, gases, condensing vapors, boiling fluids Compatible with shell material (tube OD material if direct contact)
Maximum tube-side velocity (liquid) 2.5 - 4.5 m/s Carbon steel max 3.0 m/s; titanium max 4.5 m/s per TEMA erosion velocity guideline
Maximum tube-side velocity (gas) 15 - 30 m/s Limited by vibration and pressure drop
Tube-side Reynolds number target ≥ 10,000 (turbulent) for clean service Lower values require increased surface area or lower thermal performance
Replacement Bundle - Key Considerations

When ordering a replacement bundle, provide:

  1. Original bundle drawing number (if available)
  2. TEMA type (L / M / N / U / P / S / T / W)
  3. Shell ID, tube OD and wall thickness, tube length, tube pitch, tube arrangement
  4. Tube sheet thickness and material
  5. Baffle type, baffle spacing, number of baffles
  6. Tube-to-tubesheet joint type (expanded / welded / combined)
  7. Design pressure and temperature (tube and shell sides)
  8. Fluid composition (tube and shell sides) - to verify material compatibility
  9. Nozzle orientation (if applicable) - for inlet/outlet alignment with existing piping
  10. Required corrosion allowance (tube and tube sheet) - for remaining life extension
Selection Checklist - New or Replacement Tube Bundle
  1. Define TEMA type based on thermal expansion and cleaning requirements:
    • Fixed tubesheet (L/M/N) - for clean shell side, ΔT ≤ 60°C
    • U-tube (U) - for large ΔT, hydrogen service, high pressure
    • Floating head (P/S/T/W) - for severe fouling, mechanical cleaning
  2. Select tube material based on tube-side fluid corrosivity and temperature.
  3. Select tube sheet material based on shell-side and tube-side fluid compatibility (clad or solid).
  4. Select tube OD, wall thickness, pitch, and arrangement:
    • Triangular pitch for max surface area
    • Square pitch for mechanical cleaning access (rod/brush)
  5. Specify baffle type and spacing - based on shell-side allowable ΔP and vibration criteria.
  6. Specify joint type - expanded (low cost), welded (gas/hydrogen), or combined (cyclic service).
  7. Provide design pressure and temperature for hydrotest and material grade selection.
  8. Specify whether a spare bundle is required for service rotation (reduce downtime during cleaning).
Design Limitation Statement - Tube Bundle
The tube bundle as a standalone product is not applicable for:
  • Direct installation without matching shell geometry - tube OD, length, and tube sheet thickness must match shell dimensions
  • Extreme vacuum service (< 1 kPa absolute) without external support rings or tube sheet bracing - requires additional stiffening per ASME VIII-1 UG-29
  • Service with tube-side solids content > 2% by weight without upstream filtration - erosion and tube wall thinning will occur
  • Severe thermal cycling (> 2,000 cycles/year) with expanded-only joints - combined weld + expand joint required
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
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Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151

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Product Detail
Model Number :
Shell and Tube Heat Exchanger
Operating Pressure :
Up to 36 MPa
MOQ :
YUHONG
Delivery Time :
30-180 DAYS
Payment Terms :
L/C
Price :
Negotiable
Contact Supplier
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151
Shell and Tube Heat Exchanger Tube Bundle with Fixed U-Tube Floating Head Design Pressure Up to 35 MPa per TEMA ASME VIII-1 GB/T 151

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
2 Years
ningbo
Since 1990
Business Type :
Manufacturer, Exporter, Trading Company, Seller
Main Products :
TEMA Heat Exchanger, Air Cooled Heat Exchanger, Fired Heater
Total Annual :
50M-75M
Employee Number :
50~850
Certification Level :
Verified Supplier
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