ASTM A106 Gr. B Heat Conduction HFW Finned Tubes For Power Plant Project
ASTM A106 Gr. B Heat Conduction HFW Finned Tubes For Power Plant Project
Detailes of ASTM A106 Base Tubes
ASTM A106 Grade B, which is a standard specification for seamless carbon steel pipe for high-temperature service. It is made of high-quality carbon steel, suitable for high-temperature and high-pressure conditions, with a recommended operating temperature range of -29°C up to 425°C. The base tube features good mechanical properties, with a minimum yield strength of 240 MPa and a minimum tensile strength of 415 MPa, ensuring reliable performance in power plant heat transfer applications.
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| Gr. B | 0.30 | 0.29-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| Gr.B | 60ksi (415 MPa) | 35ksi (240 MPa) |
The HFW finned tubes are designed to greatly enlarge the effective heat exchange surface area between the base tube and the surrounding fluid. By significantly improving heat transfer efficiency, they enhance the thermal performance of heat transfer equipment, reduce overall size and energy consumption, and ensure stable, reliable operation in high-temperature and high-pressure conditions typical of power plant heat transfer systems.
Specifications For Various Types Of Finned Tubes
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6~10 | <17 | 0.2-0.4 |
| Low fin tube / T-type fin tube | 10-38 | 0.6~2 | <1.6 | ~0.3 | |
| Bamboo tube / corrugated tube | 16-51 | 8.0~30 | <2.5 | ~0.3 | |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 | |
| Studed fin tube | 25-219 | 8~30 | 5~35 | φ5-20 | |
Primary Applications of Finned Tubes
1.Waste Heat Recovery
2.Power Generation: Essential components in boiler economizers, air preheaters, and condensers,etc.
3.Petrochemical Industry: Used extensively in process heaters, reformers, air coolers, and heat exchangers for various processes,etc.
4.HVAC (Heating, Ventilation, and Air Conditioning): Employed in industrial heat exchangers to facilitate efficient heating or cooling,etc.
5.Other Industries: Equipment like radiators and dryers, etc.
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