Carbon Steel Heat Exchanger Tube Bundle with ASME SA179 Tubes and SA266 Gr.2 Tubesheet - Direct Replacement for Shell & Tube Heat Exchangers

Yuhong Group Co., Ltd. supplies high-quality thermal equipment including shell & tube heat exchangers (TEMA heat exchanger designs), pressure vessels, air coolers - and every critical internal component. We deliver ASME-compliant parts that restore performance and extend equipment life.

The carbon steel tube bundle is the removable core of a shell & tube heat exchanger, consisting of ASME SA179 seamless tubes, SA266 Gr.2 forged tubesheet, baffles, tie rods, and spacers. Designed as a direct drop-in replacement for existing units in non-corrosive or mildly corrosive services.

• Restores original heat duty after years of fouling, corrosion, or erosion
• Eliminates costly repairs of old bundles with plugged tubes or damaged components
• Upgrade opportunity - improved materials or enhanced fin tubes for higher capacity
• Fast turnaround - manufacturing to your specifications in 4-6 weeks

• Precision tube-to-tubesheet joints: Hydraulic rolling + optional seal welding for leak-proof connections
• Impingement protection: Stainless steel impingement plate for high-velocity inlet streams
• Vibration-resistant design: Optimized baffle spacing to prevent tube fretting and fatigue
• Full material traceability: Mill Test Certificates (MTC) for all components

• Rising pressure drop (tube side or shell side) by >30% above clean baseline
• Exit temperatures moving away from design values despite normal flow rates
• Visible weeping at tube-to-tubesheet joints (dye penetrant test)
• Vibration noise or tube fretting marks at baffle supports

• Most economical material for clean water, steam, light hydrocarbons
• Easy to fabricate - short lead times
• Fully repairable - carbon steel tubes can be re-rolled or seal-welded in the field
• Proven longevity - 15-20 years with proper water treatment

We provide individual parts for your own assembly:

• Tube bundles - any material (carbon, stainless, nickel alloy, copper alloy, finned tubes)
• Heat exchanger tubes - cut-to-length, with or without end preparation
• Fin tubes - extruded or wrapped fins for air coolers or waste heat recovery
• Tubesheets - drilled, grooved, ready for tube expansion
• Baffles & tie rods - machined to your exact pattern

• Power plants: Generator air cooler bundles, lube oil cooler bundles
• Petrochemical refineries: Crude preheat exchanger bundles, gas cooler bundles
• Compressor stations: Intercooler and aftercooler bundles
• HVAC: Steam-to-water converter bundles, condenser bundles
• Marine (closed loop): Central cooler bundles (freshwater side)