Stainless Steel Spiral Wound Heat Exchanger Tube Bundle with Compact High-Pressure Design for Cryogenic Service - ASME SA213 TP304/316L

Yuhong Group Co., Ltd. engineers and supplies complete shell & tube heat exchangers, pressure vessels, air coolers, as well as high-performance tube bundles for retrofit and new projects. Our portfolio includes U-tubes, finned tubes, heat exchanger tubes (stainless steel, nickel alloy, copper alloy), heat exchanger tubesheets, baffles, heads, and advanced spiral wound tube bundles - a compact, high-efficiency alternative for demanding thermal duties.

The stainless steel spiral wound tube bundle is engineered for applications where space is limited but thermal performance cannot be compromised. Unlike conventional straight-tube bundles, this design consists of multiple layers of continuous spiral-wound seamless tubes (ASME SA213 TP304/304L or TP316/316L) wrapped around a central core. Each layer is separated by precision-spaced rods, creating multiple parallel flow paths on the shell side while the tube side fluid travels a long helical path. The result is extremely high heat transfer area per unit volume, true counter-current flow, and the ability to handle large temperature crosses with approach temperatures as low as 1-2°C.

• Up to 5 times more heat transfer area in the same shell diameter - ideal for retrofitting more duty into existing shells
• Handles very high tube-side pressure (e.g., 200 bar natural gas) because small-diameter tubes are inherently strong
• Achieves close temperature approaches - essential for cryogenic liquefaction (LNG, nitrogen, ethylene)
• Reduces plot space and piping - a single spiral wound exchanger can replace multiple straight-tube units

• Controlled winding tension: Prevents tube flattening or wall thinning; ensures consistent layer spacing
• Layer-by-layer leak testing: Each tube layer is pressure-tested before the next layer is wound - full bundle is finally helium-leak tested
• Precision-machined tubesheet: Spiral hole pattern matches the tube exit positions exactly - no stress on tube ends
• Thermal stress relief: The spiral design naturally accommodates differential expansion between tube layers

• Liquefied natural gas (LNG) plants - main cryogenic heat exchanger (MCHE) bundles
• Air separation units (ASU) - nitrogen/oxygen liquefiers and reboilers
• Petrochemical cold boxes - ethylene, propylene, and methane heat exchange
• Hydrogen cooling and liquefaction - high-pressure, low-temperature service
• Chemical plants - feed/effluent heat exchange for high-pressure synthesis (methanol, ammonia)

Even if you don't need a full bundle, we provide individual components to repair or upgrade your existing spiral wound exchanger:

• Heat exchanger tubes (stainless steel seamless) - cut to length, annealed, and cleaned for winding
• Spacer bars and layer strips - precision-cut to your original gap dimensions
• Heat exchanger tubesheet (forged stainless steel) - custom-drilled with spiral hole pattern
• Fin tube - stainless steel base with extruded fins for outer layer upgrades

• Exactly matches original bundle geometry - we work from your drawing or field dimensions
• Same or upgraded tube material - choose TP304L, TP316L, or duplex for higher corrosion resistance
• Faster delivery than buying a complete new exchanger
• Full documentation - material certificates, winding records, hydrotest and leak test reports

• Oil & gas - offshore gas processing, LNG export terminals
• Petrochemical - ethylene crackers, methanol plants
• Power generation - hydrogen cooling for generators
• Industrial gases - air separation, nitrogen rejection units