High-Pressure Stainless Steel Heat Exchanger Supplier | Removable U Tube Bundle & Finned Tube Bundle Components

Yuhong Group Co., Ltd. specializes in engineering and fabricating high-reliability thermal management equipment, pressure vessels, and air-cooled heat exchangers. Our flagship shell and tube heat exchanger units and assemblies are built to operate under high pressure, thermal cycling, and severely corrosive industrial fluid environments.

By leveraging in-house seamless tubing manufacturing and advanced CNC machining, Yuhong Group supplies both complete thermal units and standalone replacement components—including custom tube bundle units, high-efficiency finned tube bundle cores, precision-machined heat exchanger tubesheet plates, and replacement u tube bundle systems.

Our stainless steel thermal units are manufactured to comply with TEMA (Types E, F, G, H, J, K, X), ASME Section VIII Div 1, and API 660 standards:

• Fixed Tubesheet Heat Exchanger (TEMA E/F): Rigid design where both tubesheets are welded directly to the shell. Ideal for low thermal-expansion applications or process streams operating under low temperature differentials.
• Removable U Tube Bundle Exchanger (TEMA U): Features a bent u tube bundle anchored to a single tubesheet, allowing thermal expansion without thermal stress on the shell-to-tubesheet joint.
• Floating Head Heat Exchanger (TEMA S/T): Features one stationary tubesheet and one floating tubesheet, permitting full bundle withdrawal for internal mechanical cleaning and thermal shock mitigation.
• Air Cooled Heat Exchanger Cores: Engineered using specialized finned tube bundle modules (L-foot, KL-foot, embedded G-fin, or extruded aluminum fins) to maximize heat dissipation in water-scarce process facilities.

• Austenitic Stainless Steels: ASTM A213/A240 304/304L, 316/316L, 321, 347/347H
• Duplex & Super Duplex Steels: UNS S31803 / S32205 (Duplex 2205), UNS S32750 (Super Duplex 2507) for exceptional resistance against chloride stress corrosion cracking (SCC) and pitting
• High-Nickel Alloys & Titanium: Monel 400, Inconel 625, Hastelloy C276, and Titanium Grade 2 for severe sour gas (H₂S) and marine/offshore environments

• Integrated Raw Material Quality: Direct control over tube mill production ensures wall thickness uniformity, consistent grain structure, and low surface roughness (Ra) along every heat transfer tube
• Precision Tube-to-Tubesheet Joining: Automatic orbital TIG welding paired with torque-controlled hydraulic tube expansion delivers leak-free joints capable of sustaining design pressures exceeding 20 MPa
• U-Bend Heat Treatment: All cold-formed u tube bundle radius bends undergo solution annealing to relieve residual stresses and eliminate susceptibility to stress corrosion cracking
• Non-Destructive Examination (NDE): 100% testing protocols including Hydrostatic Pressure Testing, Eddy Current Testing (ET), Radiographic Testing (RT) on pressure welds, and Positive Material Identification (PMI)

1. Vibration Analysis & Mitigation: Flow-induced vibration (FIV) can cause premature tube fatigue or fretting wear at baffle contact points. Calculating cross-flow velocities and utilizing proper baffle spacing or rod baffles prevents acoustic resonance and mechanical failure
2. Fouling Factors & Cleaning Clearances: For heavy crude oil refining or polymerizing process streams, selecting a 90° or 45° square tube pitch layout provides straight cleaning lanes for high-pressure hydro-blasting, whereas a 30° triangular pitch is preferred for clean fluids requiring maximum thermal efficiency
3. Corrosion & Velocity Control: Excessively high tube-side fluid velocities induce erosion-corrosion on stainless steel tube inlets. Installing sacrificial impingement plates under shell inlet nozzles protects the outer tube bundle rows from liquid droplet impact

• Petrochemical & Oil Refining: Crude unit preheat trains, hydrotreater feed/effluent heat exchangers, amine treating reboilers, and overhead condensers
• Oil & Gas Processing: High-pressure gas compression cooling, glycol regeneration units, and LNG liquefaction process modules
• Chemical & Fertilizer Processing: Nitric acid cooling, ammonia synthesis loops, and reactor heat recovery exchangers
• Power Generation & Industrial Utilities: Boiler feedwater heaters, gland steam condensers, and turbine oil coolers