Spiral High Frequency Welding Finned Tube ASME SA106 GR.B For Heat Exchanger

What is High Frequency Welding Finned Tube?

High Frequency Welding Finned Tube is a type of heat transfer equipment that is used in various industries, including power generation, petrochemical, and HVAC. It is a heat exchanger that consists of a tube with integral or bonded fins welded around its outer surface. High-frequency welding (HFW) is the process of joining metal parts using an electromagnetic field, which creates intense heat and pressure to fuse the materials together.

The finned tube increases the surface area of the tube, allowing for efficient heat transfer between fluids. The welding process used in the manufacture of high-frequency welding finned tubes ensures a strong bond between the fins and the tube. This type of finned tube is commonly used in applications that require high thermal efficiency, such as air coolers, boilers, and condensers. The use of high-frequency welding ensures that the finned tube is durable, reliable, and has high heat transfer efficiency.

What is the main material for High Frequency Welding Finned Tube?

The material used for High Frequency Welding Finned Tubes can vary depending on the specific application and the desired performance requirements. However, the most commonly used materials for the tubes are carbon steel, stainless steel, and copper alloys, such as copper-nickel and brass. The fins are typically made of the same material as the base tube, although sometimes aluminum is used for its high thermal conductivity.

The choice of material depends on the operating conditions of the heat exchanger, such as the temperature, pressure, and the properties of the fluids being transferred. Carbon steel is a popular choice due to its high strength and low cost, but it is not suitable for corrosive environments. Stainless steel offers resistance to corrosion and is widely used in applications that require high cleanliness and hygiene, such as food and pharmaceutical industries. Copper alloys are known for their excellent thermal conductivity and are often used in high-temperature applications.

The Chemical Composition of A106 GR.B

- Carbon (C): 0.30% max
- Manganese (Mn): 0.29-1.06%
- Phosphorus (P): 0.035% max
- Sulfur (S): 0.035% max
- Silicon (Si): 0.10% min
- Chromium (Cr): 0.40% max
- Copper (Cu): 0.40% max
- Molybdenum (Mo): 0.15% max
- Nickel (Ni): 0.40% max

The Mechanical Properties of A106 GR.B

carbon steel pipes are specified by ASTM A106, which is the standard specification for seamless carbon steel pipe for high-temperature service. The mechanical properties of A106 GR.B at room temperature are as follows:

- Tensile strength: 60,000 psi (415 MPa) minimum
- Yield strength: 35,000 psi (240 MPa) minimum
- Elongation: 30% minimum
- Hardness: No hardness requirements specified

What's the application of A106 GR.B spiral high frequency welding finned tube?

A106 GR.B high frequency welding finned tube is a type of heat transfer equipment used in various industries, including power generation, petrochemical, and HVAC. The application of A106 GR.B high-frequency welding finned tubes includes:

1. Air preheaters: Used in power plants to preheat the combustion air before it enters the furnace, maximizing thermal efficiency.

2. Heat exchangers: Used to transfer heat between two mediums, such as in refrigeration and air conditioning systems.

3. Boilers: Used in power plants to transfer the heat generated from burning fuel to generate steam to drive turbines.

4. Furnace walls: Used in industrial furnaces to transfer heat to the working environment.