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ASTM B111 C12200 Copper Alloy Low Fin Tube For Oil And Gas Industry
Low fin tube is a kind of high effienciency heat exchanger tube which is rolled to form spiral fin on its outer surface.
The strengthening effect of this type of tube is outside the tube. One the one hand, the heat transfer area is increased by the screw fin; on the other hand, when the shell side medium flows through the surface of the threaded tube, the surface screw fin has a segmentation effect on the laminar flow side layer, which reduces the thickness of the boundary layer. Moreover, the turbulence form on the surface is stronger than that of the smooth tube, which further reduces the thickness of the the boundary layer.
The specification B111 covers seamless tube and ferrule stock of copper and various copper alloys up to 79 mm, inclusive, in diameter, for use in surface condensers, evaporators, and heat exchangers.
The mechanical properties of C12200 grade copper are nearly identical to high purity copper alloys such as C11000 grade. These copper tubes have good deep draw properties and are resistant to pitting in harsh weather and water environments.
It is extremely resistant to weathering and a wide range of contaminants. It is frequently used for corrosion resistance. It is suitable for most types of water and can be used underground due to its resistance to soil corrosion. It is resistant to non-oxidizing mineral and organic acids, as well as alkaline solutions and saline solutions.
Chemical Composition of C12200
| Copper (Cu) | 99.9 min. |
| Phosphorus (P) | 0.015~0.040 |
C12200 has similar corrosion resistance to C11000. It has excellent weathering resistance and very good resistance to a wide range of chemicals. It is often used specifically for corrosion resistance. It is suitable for most water bodies and can be used underground as it resists soil corrosion. It resists non-oxidizing mineral and organic acids, corrosive solutions, and saline solutions.
Mechanical Properties
| Temper | Former Temper | Tensile strength (MPa) | Yield strength (MPa) |
| H55 | light drawn | 250 min | 205 min |
| H80 | hard drawn | 310 min | 275 min |
Why use ASTM B1l1 C12200 tubes:
1. High thermal conductivity:
C12200 copper material has excellent thermal conductivity, with a thermal conductivity of approximately 390 W/m·K, which helps improve heat exchange efficiency.
Aluminum fins further enhance heat transfer capabilities, making it an ideal choice for efficient heat exchange applications.
2. Corrosion resistance:
Aluminum material has good corrosion resistance and is suitable for a variety of working environments, including high humidity and corrosive gas environments. C12200 copper also has excellent corrosion resistance in humid and corrosive environments, ensuring the long service life of the pipe.
3. Structural stability:
The extrusion process ensures a strong bond between the fins and the tube wall, enhancing the overall structural stability. C12200 copper has high strength and ductility, can withstand high-pressure working environments, and is suitable for a variety of industrial applications.
Physical Properties
| Density (lb / cu. in.) | Electrical Resistivity (microhm-cm (at 68 Deg F)) | Mean Coeff Thermal Expansion | Modulus of Elasticity Tension |
| 0.323 | 12.2 | 9.4 | 17000 |
Applications