ASTM A179 Carbon Steel Embedded G Fin Tubes For Air Cooled Condensers ACC
ASTM A179 Carbon Steel Embedded G Fin Tubes For Air Cooled Condensers ACC
ASTM A179 seamless carbon steel G-type finned tubes utilize ASTM A179 cold-drawn seamless low-carbon steel tubes as the base pipe. Through a mechanical embedding process, metal fins are inserted into a spiral G-shaped groove on the outer wall of the tube and secured in place. The enhanced heat transfer efficiency of G-type finned tubes facilitates compact equipment design. The mechanical embedding process increases surface friction, preventing the fins from detaching under conditions of vibration or thermal cycling.
Core Advantages
A179 seamless pipe: Low cost, good weldability, and stable mechanical properties under pressure and thermal cycling conditions.
Embedded G-type fin structure: High-temperature and vibration resistance, long service life, and low maintenance costs.
Compact layout: Large air-side heat transfer area.
Chemical Composition (%) max
| Grade | C | Mn | P | S |
| A179 | 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 |
Mechanical Properties
| Grade | Tensile Strength min | Yield Strength min | Elongation in 2" or 50mm min |
| A179 | 47ksi (325 MPa) | 26ksi (180 MPa) | 35% |
Key Application
Power Generation Industry (Largest Application)
1.Air-Cooled Condensers (ACC) for thermal power plants
2.Flue gas waste heat recovery economizers & gas coolers
Petrochemical & Natural Gas Processing
1.Refinery air-cooled heat exchangers (process air coolers)
2.Natural gas dehydration & amine regeneration coolers
Refrigeration, HVAC & Compressor Systems
1.Industrial ammonia / Freon / propane air-cooled condensers
2.Large screw & reciprocating compressor air coolers, oil coolers
3.Industrial drying equipment air heaters
Other heat recovery radiators & air coolers...
Welcome to Your Consults About Below Fin 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 fin type | 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 | 5~20 | |
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