ASME Carbon Steel Tube Bundle Replacement | Heavy Forged Heat Exchanger Tubesheet Supplier

Yuhong Group Co., Ltd. is a fully integrated manufacturer of raw heat transfer tubing, pressure vessel equipment, and thermal replacement cores. We manufacture heavy-duty carbon steel heat exchanger tube bundle assemblies, straight/bent tubing cores, high-efficiency Fin Tube modules, and heavy forged heat exchanger tubesheet plates for high-pressure industrial processing.

As a direct tube mill operator, Yuhong Group eliminates supply chain delays by producing our own Stainless Steel Seamless Tube, Furnace Tube, Nickel Alloy Tube, and Copper alloy tube products. We fabricate replacement bundles that directly drop into existing Heat Exchanger and Tema heat exchanger shells, restoring design heat transfer coefficients without requiring field modification.

We fabricate thermal cores matching original OEM geometry or custom process specifications across major mechanical types:

• Removable U Tube Bundle (TEMA U): Utilizes U-bent Heat Exchanger Tube arrays fixed to a single tubesheet. Accommodates extreme differential thermal expansion between shell and tubes without generating mechanical strain on joint connections.
• Floating Head Tube Bundle (TEMA S/T): Features a stationary heat exchanger tubesheet at one end and an internal floating head at the other. Allows complete tube bundle removal for mechanical cleaning of shell-side foulants.
• Fixed Tubesheet Bundle (TEMA E/F): Rigid dual-tubesheet architecture for systems operating with stable process temperatures or equipped with shell expansion joints.
• Air-Cooled Finned Cores: Integrates high-density Fin Tube modules (L-foot, extruded aluminum, or high-frequency welded fin) on base tubing to maximize thermal performance in air cooling installations.

• Carbon Steels: ASTM A179, ASTM A214, ASTM A210 Grade A1/C, SA334 Grade 6 for low-temperature and high-pressure duties.
• Seamless Alloys: Stainless Steel Seamless Tube (304L, 316L, Duplex 2205), ASTM A213 T11/T22/T91 Furnace Tube grades for high-temperature boilers.
• Non-Ferrous Alloys: Nickel Alloy Tube (Inconel 625, Hastelloy C276) and Copper alloy tube (CuNi 90/10, CuNi 70/30) for high-velocity seawater cooling.

• Direct Tube Mill Control: Producing seamless tubing in-house ensures precise outer diameter (OD) control, wall thickness uniformity, and optimal surface smoothness across the entire length of every Heat Exchanger Tube.
• Leak-Free Joint Fabrication: Automatic orbital TIG welding combined with torque-controlled hydraulic expansion into double-grooved tubesheet holes ensures mechanical seal integrity under operating pressures exceeding 20 MPa.
• Stress-Relieved Bend Zones: All cold-formed bend radiuses in our u tube bundle units undergo post-bend heat treatment to eliminate residual tensile stresses, preventing Stress Corrosion Cracking (SCC) during service.
• Comprehensive Quality Protocols: Every heat exchanger tube bundle undergoes Hydrostatic Pressure Testing, Eddy Current Testing (ET) on tubing, Radiographic Testing (RT) on pressure welds, and Positive Material Identification (PMI).

1. Managing Flow-Induced Vibration (FIV): Shell-side fluid velocity must be calculated during design to prevent tube fluttering. Correct baffle pitch and the addition of intermediate support plates eliminate acoustic resonance and fretting damage where tubes pass through baffle holes.
2. Pitch Geometry & Mechanical Cleaning: Selecting a 90° or 45° square tube pitch layout provides straight cleaning lanes for mechanical hydro-blasting during plant turnarounds, whereas a 30° triangular pitch maximizes surface area for non-fouling fluids.
3. Baffle-to-Shell Bypass Prevention: Outer tube limit (OTL) and baffle outer diameter must adhere strictly to TEMA clearances to minimize fluid bypass between the baffle rim and the shell wall, ensuring maximum thermal exchange efficiency.

• Oil & Gas Processing: Amine reboilers, gas sweetening units, propane chiller cores, and offshore production modules.
• Petrochemical Refining: Crude Distillation Unit (CDU) preheat trains, hydrocracker cooling cores, overhead condensers, and vacuum distillation exchangers.
• Power Generation: High-pressure boiler feedwater heaters, gland steam condensers, and auxiliary lube oil coolers.
• Chemical Processing: Nitric acid cooling, ammonia synthesis loops, and general process Heat Exchanger replacement cores.