ASTM A179 Seamless Embedded G Fin Tube With AL1060 For Charge Air Cooler
Embedded G Fin Tube ASTM A179 Seamless Tube With AL1060 For Charge Air Cooler
ASTM A179 covers min. wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.
Chemical Composition (%) max
| Grade | C | Mn | P | S |
| SA179 | 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 |
| SA179 | 47ksi (325 MPa) | 26ksi (180 MPa) | 35% |
Manufacture: Tubes shall be made by the seamless process and shall be cold drawn.
Surface Condition: Finished tubes shall be free of scale. A slight amount of oxidation will not be considered as scale.
Hardness Requirements: The tubes shall have a hardness number not exceeding 72 HRB.
Heat Treatment: Tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.
Keywords: Cold drawn tubes, Condenser tubes, Heat exchanger tubes, Low carbon tubes, Seamless tubes, Boiler tubes, etc.
Test Methods Referreds: Flattening Test, Flaring Test, Flange Test, Hardness Test, Hydrostatic Test.
Embedded G Finned Tubes
Embedded G fin tubes, the fin is mechanically embedded into the groove, which is plowed into the tube, and then locked into place by back-filling with the base tube material. The G fin is made by tension winding a fin strip, typically made of aluminum or copper, into a groove that is machined on the outer surface of the tube.
Processing technology: the fins are tightly embedded in the outer surface of the mechanically slotted base tube.
The base tube can be made from various materials such as carbon steel, alloy steel, stainless steel, and copper.
The fins are usually made from aluminum (e.g., Al 1060, Al 1100) or copper (e.g., T2 copper).
Application: HVAC air cooler, refrigeration, condensers, heat exchanger, power generation, heater, radiator economizer (Suitable for high temperature environment, limit temperature 350℃).
Specifications For Various Types Of Finned Tubes We Can Do
| 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 | φ5-20 | |
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