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Overview:
Carbon steel HFW (High Frequency Welded) fin tubes are used in various industrial
applications, including heat transfer and cooling systems. These
tubes consist of a cylindrical carbon steel base tube with fins
attached to its outer surface. The HFW process is used to weld the
fins to the base tube, creating a strong bond that allows for
efficient heat transfer between the fluid flowing inside the tube
and the outside environment.
The process for creating carbon steel HFW fin tubes involves using
a high-frequency electric current to heat the fins and the base
tube, which are pressed together to create a weld. This process is
often preferred over other welding techniques because it produces a
smooth surface finish and requires minimal post-weld processing.
The fins themselves are typically made of a thin sheet of carbon
steel that is folded or wound around the base tube. The fin
geometry can vary, depending on the desired heat transfer
characteristics and the specific application of the fin tube.
Carbon steel HFW fin tubes are commonly used in applications such
as industrial boilers, heat exchangers, and air coolers. They are
known for their high thermal conductivity, durability, and
resistance to corrosion. Additionally, HFW fin tubes are often more
cost-effective than other types of fin tubes, making them a popular
choice in many industries.
Description:
| Standard | ASTM A106 & Its equivalent ASME, DIN & EN standard |
| Base Tube Material | Gr.A/B/C |
| Fin Material | Carbon Steel |
| Base Tube O.D. | 16-219mm |
| Fin Height | 6-50mm |
| Fin Thickness | 0.3-3.0mm |
| Fin Pitch | As customer's request |
| Tube End | Plain Ends, Beveled Ends |
| Bare End | As customer's request |
| Weld Process | GMAW |
| Production Capacity | More than 5000 meters per day |
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| A | 0.25 max | 0.27-0.93 | 0.035 max | 0.035 max | 0.10 min | 0.40 max | 0.40 max | 0.15 max | 0.40 max | 0.08 max |
| B | 0.30 max | 0.29-1.06 | 0.035 max | 0.035 max | 0.10 min | 0.40 max | 0.40 max | 0.15 max | 0.40 max | 0.08 max |
| C | 0.35 max | 0.29-1.06 | 0.035 max | 0.035 max | 0.10 min | 0.40 max | 0.40 max | 0.15 max | 0.40 max | 0.08 max |
Mechanical Properties:
| Grade | Tensile Strength, min, psi (MPa) | Yield Strength, | Elongation in 2 in. | Heat Treatment Temperature, | |
| Longitudinal | Transverse | ||||
| A | 48000(330) | 30000(205) | 35 | 25 | 1200(650) |
| B | 60000(415) | 35000(240) | 30 | 16.5 | 1200(650) |
| C | 70000(485) | 40000(275) | 30 | 16.5 | 1200(650) |
Application:
ASTM A106 GR.B HFW Fin Tube is commonly used in heat exchangers,
boilers, and other applications that require efficient heat
transfer. The finned tube design increases the heat transfer
surface area, thus improving the heat transfer rate.
Some specific applications of ASTM A106 GR.B HFW Fin Tubes include:
1. Power generation: These tubes are used in power plants to
transfer heat from the high-temperature flue gases to the water or
steam used in the power generation process.
2. Oil and gas industry: The tubes are used in heat exchangers to
transfer heat between different fluids in oil and gas processing,
refining, and transportation operations.
3. HVAC systems: The tubes are used in air conditioning and
refrigeration systems for efficient heat transfer between the
refrigerant and the surrounding air.
4. Chemical processing: These tubes are used in chemical processing
plants for heat transfer between different fluids and in reactors
for maintaining temperature control.
Overall, the ASTM A106 GR.B HFW Fin Tube is a versatile and
efficient tool for improving heat transfer in a wide range of
industrial applications.
