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| Brand Name: | YUHONG |
| MOQ: | 200-500KGS |
| Price: | Negotiable |
| Payment Terms: | L/C,T/T,AT SIGHT |
| Supply Ability: | According to Clients' requirements |
ASME SA106 Gr.B is a standard specification for seamless carbon steel tubes designed for high-temperature, pressure-bearing service in boilers, superheaters, and pressure piping systems—featuring excellent high-temperature strength, pressure resistance, and weldability. The Embedded G Type Fin Tube with Cu-T2 Fin is a high-efficiency composite heat transfer component: it’s fabricated by mechanically embedding high-purity copper (Cu-T2) fin strips (with ultra-high thermal conductivity) into the outer surface of SA106 Gr.B seamless base tubes. Its core advantages come from the synergy of the base tube’s high-temperature/pressure capacity, Cu-T2 fins’ superior thermal conductivity, and the G-type embedded structure’s low contact thermal resistance & structural stability. This product meets the demand for efficient heat exchange in medium-high temperature (≤480℃) and medium-pressure scenarios, serving as a key component in power, chemical, and metallurgical heat transfer systems.
| Element | C | Si | Mn | P | S | Cu | Ni | Cr | Mo | V |
| Range | 0.25-0.30% | 0.10-0.35% | 1.20-1.50% | ≤0.035% | ≤0.035% | ≤0.40% | ≤0.40% | ≤0.40% | ≤0.15% | ≤0.08% |
| Tensile Strength | Yield Strength (0.2% Offset) | Hardness (HB) | Elongation (in 200mm) |
| 415-550MPa | ≥240MPa | ≤179HB | ≥22% |
| Thermal Conductivity (20℃) | Electrical Conductivity (20℃) | Tensile Strength | Elongation | Hardness (HV) |
| ≥390W/(m·K) | ≥57MS/m | ≥220MPa | ≥30% | ≤80HV |
Key Characteristics:
Exceptional Thermal Conductivity (~400 W/m·K): Enables rapid heat dissipation from the fin root to the tip, dramatically enhancing fin efficiency.
High Malleability: Allows for seamless forming and ensures tight, continuous bonding with the base tube during the embedding process.
Corrosion Resistance: Performs well in dry and atmospheric conditions.
1.Fin Material: Cu-T2 vs. Aluminum
Fin Embedded G-type TubeCu-T2 fins have 2-3 times higher thermal conductivity than aluminum fins, enabling more efficient heat transfer in low-temperature difference scenarios. Aluminum fins are lighter and lower-cost but have poorer high-temperature oxidation resistance (unsuitable for >200℃ long-term service). This product (SA106 Gr.B+Cu-T2) is ideal for high-efficiency medium-high temperature heat exchange, while the aluminum fin variant fits low-cost, low-temperature applications.
2. Base Tube :SA106 Gr.B vs.SA179
SA106 Gr.B base tubes offer higher high-temperature strength and pressure-bearing capacity (suitable for ≤480℃, ≤10MPa conditions), while SA179 base tubes (low-carbon steel) have better formability but lower high-temperature performance (≤300℃, ≤6MPa). The former targets medium-high pressure heat exchange; the latter is for low-pressure, medium-low temperature scenarios.
1.Compressed Air Systems: As the core heat transfer tube in aftercoolers and intercoolers, where efficiently cooling hot, compressed air is critical.
2.Air-Cooled Heat Exchangers: For cooling process fluids (water, oil) in power generation and industrial plants using air as the cooling medium.
3.Heat Recovery Units: In systems recovering waste heat from clean exhaust gases for preheating air or water.
4.Industrial Air Heating/Cooling Coils: For furnaces, dryers, and ventilation systems.
