Low Fin Tubes Carbon Steel ASTM A179 For Condensers And Evaporators
Detailes of ASTM A179 Base Tubes
ASTM A179 This specification covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.This specification covers tubes 1⁄8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter.
Basic Requirement
Manufacture: tubes shall be made by the seamless process and shall be cold drawn.
Heat treatment:tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.
Surface Condition: finished tubes shall be free of scale. A slight amount of oxidation will not be considered as scale.
Tests: Flattening Test, Flaring Test, Flange Test, Hardness Test, Hydrostatic Test.
Chemical Composition (%)
| 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 (0.2%Offset,min) | Elongation min. | Hardness, max |
| A179 | 47ksi (325 MPa) | 26ksi (180 MPa) | 35% | Rockwell: 72 HRB |
Definition
Low Fin Tubes/Integral Fin Tubes are increasingly being used in various fluid heat Eexchangers.It is suitable for the shell side medium is relatively clean, no corrosion, no scaling, can use low thread finned tube as heat exchange element to form low thread finned tube high efficiency heat exchanger.
Material:Typically constructed from materials such as carbon steel, stainless steel, alloy or copper, providing durability and resistance to corrosion.
Advantages
1.Fins are typically spaced apart and have a low height, which minimizes flow resistance while still providing significant surface area for heat transfer.
2.Corrosion resistance, wear resistance, low contact thermal resistance;
3.The design enhance heat transfer efficiency while maintaining a compact structure;
4.With a versatile application, suitable for a wide range of industries, including oil and gas, chemical processing, and power generation;
Application ( Not limited to the following )
Power Generation
Employed in boilers and condensers to improve heat recovery and overall efficiency.
HVAC Systems
Utilized in heating, ventilation, and air conditioning systems to improve energy efficiency,etc.
Heat exchangers, boilers, furnaces and refineries
Widely used in various types of heat exchangers, including air-cooled and water-cooled systems.
Specifications For Various Types Of Finned Tubes
Our finned tubes include the following types:
| 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 | 8-30 | <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 |
| Serrated spiral fin tube | 25-219 | 2-7 | <38.1 | 0.9-2.0 |
| Studed fin tube | 25-219 | 8-30 | 5-35 | φ5-20 |
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Carbon Steel ASTM A179 Low Fin Tubes For Condensers And Evaporators Images
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