Product Description Content
Custom Industrial Shell and Tube Heat Exchangers & Engineered Replacement Components
Yuhong Group Co., Ltd. is an ASME-certified manufacturer specializing in high-performance thermal equipment, pressure vessels, air coolers, and critical heat exchanger components. Engineered for severe operational environments, our shell and tube heat exchanger units deliver reliable thermal transfer across oil refining, petrochemical processing, natural gas treatment, and heavy chemical facilities.
In addition to complete pressure vessels, Yuhong Group manufactures high-precision replacement internals for maintenance turnarounds. Our product portfolio includes custom-drilled heat exchanger tubesheet plates, removable straight tube bundle units, thermal-efficient u tube bundle assemblies, extended-surface finned tube bundle systems, and individual heat exchanger tubes.
Engineering Specifications & Material Selection
Yuhong Group manufactures shell & tube heat exchanger equipment according to TEMA (Types E, F, G, H, J, K, X) and ASME Section VIII Division 1 standards, tailored to high-pressure and corrosive fluid applications:
Austenitic & Ferritic Stainless Steels: ASTM A240/A213 304/304L, 316/316L, 321, 347H, and 410. Provides superior resistance against general oxidation and organic acid corrosion.
Duplex & Super Duplex Steels: UNS S31803 / S32205 (Duplex 2205), UNS S32750 (Super Duplex 2507). Optimized for high-chloride process streams and marine environments, offering high resistance to stress corrosion cracking (SCC) and pitting.
Nickel Alloys & Superalloys: UNS N04400 (Monel 400), UNS N06625 (Inconel 625), UNS N08825 (Incoloy 825), UNS N10276 (Hastelloy C276). Designed for extreme temperatures, hydrofluoric acid, sour gas ($H_2S$), and heavy hydroprocessing duties.
Non-Ferrous Alloys: Copper-Nickel alloys (CuNi 90/10, CuNi 70/30) and Titanium Grade 2 / Grade 12 for high-velocity seawater cooling systems.
Essential Heat Exchanger Components & Technical Functions
| Component Part | Fabrication & Design Options | Technical Role in Heat Exchanger Operation |
|---|---|---|
| Heat Exchanger Tubesheet | Heavy Forged Carbon Steel, Stainless Steel, Single/Double Clad Plates | Serves as the primary pressure boundary separating shell-side and tube-side fluids. Precision CNC drilled with serrated grooves to guarantee zero-leakage hydraulic expansion or seal-welded joints under high differential pressures. |
| Tube Bundle | Straight Tube, U Tube Bundle, or Finned Tube Bundle | The core thermal core responsible for fluid isolation and heat conduction. Extended surface finned bundles maximize heat transfer efficiency in air cooling and low-convection gas applications. |
| Baffles & Support Plates | Segmental, Double-Segmental, Rod Baffles (Carbon Steel / Stainless Steel) | Directs shell-side fluid flow perpendicular to heat transfer tubes to increase turbulence while providing critical mechanical support to prevent flow-induced vibration (FIV). |
| Channel & Shell Flanges | Forged Alloy Steel Flanges with High-Tensile Stud Bolting | Main pressure-retaining connection enabling accessibility for tube cleaning, bundle pulling, and internal non-destructive examination (NDE). |
| Channel Covers & Heads | Hemispherical, Ellipsoidal, or Flat Covers with Pass Partitions | Directs tube-side process fluid through single or multi-pass configurations, maintaining optimized fluid velocity without excessive pressure drop. |
Technical Highlights & Manufacturing Integration
Integrated Raw Tubing Supply: Operating as an established tube and pipe mill, Yuhong Group controls raw material quality, dimensional tolerances, and wall-thickness consistency directly from raw ingot to finished tube bundle.
Automated Tube-to-Tubesheet Joining: Precision orbital TIG welding paired with multi-step torque-controlled hydraulic expansion creates tight mechanical joints resistant to severe thermal cycling and pressure surges.
Enhanced Maintenance Access: Removable u tube bundle and floating head designs allow maintenance personnel to execute mechanical cleaning, hydrostatic testing, or individual tube plugging during planned turnaround schedules.
Comprehensive Quality Verification: 100% Non-Destructive Examination including Eddy Current Testing (ET), Radiographic Testing (RT), Hydrostatic Pressure Testing, Positive Material Identification (PMI), and Ultrasonic Flaw Detection (UT).
Engineering Guidelines: Crucial Knowledge for Equipment Procurement
Selecting the correct shell and tube heat exchanger configuration requires evaluating thermal, mechanical, and maintenance parameters:
Managing Differential Thermal Expansion: Fixed tubesheet exchangers subject to steep temperature differences between tube and shell passes build up significant thermal stresses. Incorporating an expansion joint or choosing a u tube bundle layout allows free longitudinal expansion without damaging tubesheet joints.
Mitigating Flow-Induced Vibration (FIV): High shell-side fluid velocities near inlet nozzles cause tube vibration, leading to fretting wear at baffle contact points. Installing impingement plates or adjusting baffle spacing prevents acoustic resonance and mechanical tube failure.
Fouling Factors & Cleaning Requirements: Heavy crude streams and cooling tower water build up scale over operational cycles. Removable bundle structures paired with square tube pitch layouts facilitate mechanical hydro-blasting and automated bundle extraction.
Target Industries & Operational Applications
Oil & Gas Downstream Processing: Crude Distillation Unit (CDU) preheat trains, hydrocracker feed-effluent exchangers, amine gas treating reboilers, and naphtha hydrotreaters.
Upstream & Offshore Facilities: High-pressure gas compression cooling decks, glycol dehydration units, and FPSO processing modules.
Petrochemical Production: Ethylene plant quench exchangers, methanol synthesis coolers, and aromatic separation columns.
Power & Fertilizer Generation: Feedwater heater systems, condenser units, and ammonia synthesis heat recovery units.
Contact Yuhong Group Engineering Team
Request technical assistance or custom pricing for shell and tube heat exchanger units, replacement u tube bundle cores, or bulk supply of heat exchanger tubesheet plates and finned tube bundle products:
Company: Yuhong Group Co., Ltd.
Website: www.tema-heatexchanger.com
Direct Email: jimmy@steelseamlesspipe.com
Manufacturing Standards: ASME Section VIII Div 1, TEMA Class R/B/C, API 660, PED 2014/68/EU, ISO 9001
