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YUHONG HOLDING GROUP CO., LTD

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China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT
China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT

  1. China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT
  2. China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT
  3. China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT
  4. China ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT

ASME SA179 U-Tube Shell & Tube Exchanger for High ΔT

  1. MOQ: 1 PCS
  2. Price: NEGOCIATED
  3. Get Latest Price
Tubesheet material ASME SA266 Gr.2
Delivery Time 20-80 DAYS
Shell material SA516 Gr.70
Payment Terms T/T,L/C
Thermal differential > 50°C
Flange material ASME SA105
Supply Ability 500 TONS
Tube material ASME SA179
Design type U-tube
Packaging Details IRON FRAME+PLYWOODEN CASE OR WOVEN BAG
Model Number U tube
Certification ASME, ABS, DNV-GL , BV, LR , KR, CCS, PED, TUV, ISO9001, AD2000
Brand Name YUHONG
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Tubesheet material ASME SA266 Gr.2 Delivery Time 20-80 DAYS
Shell material SA516 Gr.70 Payment Terms T/T,L/C
Thermal differential > 50°C Flange material ASME SA105
Supply Ability 500 TONS Tube material ASME SA179
Design type U-tube Packaging Details IRON FRAME+PLYWOODEN CASE OR WOVEN BAG
Model Number U tube Certification ASME, ABS, DNV-GL , BV, LR , KR, CCS, PED, TUV, ISO9001, AD2000
Brand Name YUHONG Place of Origin CHINA
High Light U-Tube heat exchanger ASME SA179 tubesShell & tube heat exchanger high ΔT serviceTEMA heat exchanger SA266 Gr.2 tubesheet
U-Tube Shell & Tube Heat Exchanger | ASME SA179 Tubes & SA266 Gr.2 Tubesheet | U-Tube Bundle Design for High ΔT Service – ASME/TEMA Fabrication
Need a custom quote for Shell & Tube Exchanger? Contact our engineering team directly: jimmy@steelseamlesspipe.com
Product Description

Yuhong Group: Complete Heat Exchanger Solutions – From Components to Full Equipment

Yuhong Group Co., Ltd. designs and manufactures a comprehensive range of thermal equipment for global industries. Our core offerings include shell and tube heat exchangers, pressure vessels, air coolers, and a complete supply of critical components: finned tube bundles, U-tube bundles, heat exchanger tubesheets, and all related parts – ensuring full support for new projects and maintenance.

Product Focus: U-Tube Shell & Tube Heat Exchanger – Engineered for High Thermal Differential

Based on the attached photographs, this is a U-tube shell & tube heat exchanger – one of the most versatile and reliable designs for applications involving large temperature differences between shell-side and tube-side fluids.

The photographs show the following key features:

  • Tube material: ASME SA179 (seamless carbon steel tubes) – providing excellent thermal conductivity and formability for U-bending

  • Tubesheet material: ASME SA266 Gr.2 (forged carbon steel) – offering high strength and dimensional stability

  • Flange material: ASME SA105 (forged carbon steel) – ensuring reliable bolted connections

  • Design type: U-tube (single tubesheet, tubes can expand freely)

  • Construction: Full ASME/TEMA compliance with hydrostatic testing and NDE

Key Components & Their Functions in This U-Tube Heat Exchanger

Component Material (from photos) Role in Equipment Performance
U-Tube Bundle ASME SA179 (carbon steel) Carries tube-side fluid; U-bend allows free thermal expansion without stressing tubesheet. Eliminates need for expansion joint.
Heat Exchanger Tubesheet ASME SA266 Gr.2 (forged) Anchors U-tubes at the inlet end; separates shell side from tube side. Forged carbon steel provides excellent strength and toughness.
Shell Carbon steel (SA516 Gr.70 typical) Contains shell-side fluid; designed for pressure containment.
Channel / Bonnet Carbon steel (with SA105 flanges) Distributes fluid to the U-tube bundle; flanged connection allows access for bundle inspection and cleaning.
Baffles Carbon steel (SA516 Gr.70 typical) Support U-tubes; direct shell-side flow for optimal heat transfer.
Flanges ASME SA105 (forged) Provide leak-tight connections between channel, shell, and piping. Forged construction ensures reliable sealing.
Finned Tube Bundle (optional) Tube + aluminum/SS fins Not present in this unit – but we offer finned tube bundles as upgrades for air-cooling or gas-cooling applications.

Why U-Tube Design? – Key Advantages Over Fixed Tubesheet

Feature U-Tube Heat Exchanger Fixed Tubesheet Heat Exchanger
Thermal expansion Handled naturally by U-bend – no expansion joint Requires expansion joint or floating head
Tubesheet count Single tubesheet – simpler and more economical Two tubesheets – more complex
Tube replacement Individual tubes can be replaced (straight sections) Tube replacement possible but more limited
Heat transfer area Slightly reduced in U-bend region Full straight length area
Mechanical cleaning (tube inside) Tube cleaning accessible from one end only Tubes accessible from both ends
Cost Lower than floating head; higher than fixed tubesheet Most economical for low ΔT

When to Specify a U-Tube Heat Exchanger:

  • Thermal differential > 50°C – U-bend handles expansion without expansion joint

  • High tube-side pressure – single tubesheet design handles pressure efficiently

  • Shell-side cleaning is sufficient – cleaning of U-bend internal surfaces is limited

  • Need for cost-effective thermal expansion solution – U-tube is more economical than floating head

Technical Highlights of Our U-Tube Heat Exchanger

  • ASME SA179 seamless tubes: Cold-drawn, low-carbon steel provides excellent thermal conductivity, formability for U-bending, and consistent wall thickness for reliable tube-to-tubesheet joints.

  • ASME SA266 Gr.2 forged tubesheet: Forged carbon steel offers superior mechanical properties compared to rolled plate – particularly in the through-thickness direction. This is critical for high-pressure tube-side service and long-term tube joint integrity.

  • ASME SA105 forged flanges: Forged carbon steel flanges provide reliable sealing and resistance to galling during bolt-up – essential for maintaining leak-tight joints over multiple maintenance cycles.

  • Precision U-bending: Our U-tubes are bent with controlled radius to avoid wall thinning or ovality – ensuring consistent tube life and predictable thermal expansion behavior.

  • Tube-to-tubesheet joint: Precision rolling (and optional seal welding) creates leak-tight joints that withstand thermal cycling and pressure fluctuations.

Knowledge Module: U-Tube vs. Floating Head vs. Fixed Tubesheet – Which to Choose?

Operating Condition Recommended Design Rationale
ΔT < 50°C, clean service Fixed tubesheet Most economical, simple construction
ΔT > 50°C, moderate fouling U-tube Handles thermal expansion without expansion joint; lower cost than floating head
ΔT > 50°C, heavy fouling Floating head Bundle removable for mechanical cleaning; U-tube not suitable for heavy tube-side fouling
High tube-side pressure U-tube Single tubesheet design handles high pressure efficiently
Frequent thermal cycling U-tube or floating head U-bend or floating head accommodates expansion and contraction

Typical Applications for U-Tube Heat Exchangers

Industry Application Why U-Tube
Petrochemical / Refinery Crude preheaters, gas coolers, feed/effluent exchangers Handles large temperature differentials in process service
Power generation Lube oil coolers, generator coolers, feedwater heaters Reliable thermal expansion management
Chemical processing Reactor temperature control, solvent heating/cooling Adaptable to varying process conditions
HVAC / district heating Steam converters, hot water generators Cost-effective thermal expansion solution
Compressor stations Intercoolers, aftercoolers High-pressure capability; U-bend design handles cyclic service

Component-Only Supply – We Also Provide for Maintenance & Spares

If your existing U-tube heat exchanger needs replacement parts, we supply individual components without ordering a complete new exchanger:

  • U-tube bundles – direct replacement for existing shells – built to your drawing

  • Finned tube bundles – for air cooler retrofits and gas-cooling applications

  • Heat exchanger tubes – ASME SA179, stainless steel, alloy – cut to length, bent, and end-prepared

  • Heat exchanger tubesheet – SA266 Gr.2, forged, drilled and grooved per your pattern

  • Flanges – SA105, SA350 LF2, stainless – any facing type

  • Baffles, tie rods, spacers – machined to your dimensions

How to Specify a Replacement U-Tube Bundle Correctly

To avoid mismatches, we need the following information (send any of these):

  1. Original bundle drawing – best option. We duplicate tube count, U-bend radius, tube length, and baffle spacing exactly.

  2. Old bundle (physical sample) – we can measure and reverse-engineer a perfect match.

  3. Shell internal dimensions – shell ID, tubesheet groove dimensions, bolt circle.

  4. Service conditions – temperature, pressure, fluids – to confirm material selection is appropriate.

Typical Materials for U-Tube Heat Exchangers

Component Carbon Steel Option Stainless Steel Option Alloy Option
Tubes SA179 SA213 TP304/316L Monel, Inconel, titanium
Tubesheet SA266 Gr.2 SA182 F304/316L Alloy forgings
Flanges SA105 SA182 F304/316L Alloy forgings
Shell SA516 Gr.70 SA240 304/316L Alloy plate

Quality Assurance & Documentation

Every U-tube shell & tube heat exchanger we fabricate includes:

  • ASME Code compliance – per ASME Section VIII, Division 1

  • TEMA standards – design, fabrication, and inspection per TEMA requirements

  • Material Test Certificates (MTC) per EN 10204 3.1 – full traceability

  • NDE reports – RT, UT, MT, PT as required

  • Hydrostatic test report – shell side and tube side

  • PMI (Positive Material Identification) – available on request

  • Third-party inspection (SGS, BV, TÜV) – at buyer’s request

Get a Quotation for Your U-Tube Heat Exchanger

To quote a U-tube shell & tube heat exchanger like the one in your photographs, send the following to jimmy@steelseamlesspipe.com:

  • Process data sheet (flow rates, inlet/outlet temperatures, pressures)

  • Fluid composition (corrosivity, fouling tendency)

  • Tube material preference (SA179 carbon steel as shown – or stainless steel, alloy)

  • Required code compliance (ASME, TEMA)

  • Drawing (PDF, scan, or hand sketch) if available

Our engineers will respond with a technical proposal, general arrangement drawing, and competitive price – typically within 48 hours.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter,Trading Company,Seller

  • Year Established:

    1990

  • Total Annual:

    50M-75M

  • Employee Number:

    50~850

  • Ecer Certification:

    Verified Supplier

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  • YUHONG HOLDING GROUP CO., LTD
  • 20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
  • https://www.tema-heatexchanger.com/

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