Serrated Spiral High Frequency Welding Finned Tube ASTM A312 TP347 For Heat Exchanger

What is Serrated Spiral High Frequency Welding HFW Finned Tube?

A serrated spiral high frequency welding (HFW) finned tube is a type of heat transfer equipment used in various industrial applications such as power plants, chemical plants, and oil refineries. The tube consists of a base tube made of steel or other metals, which is surrounded by a series of helical fins that increase the heat transfer area.

What sets the serrated spiral HFW finned tube apart from other types of finned tubes is its unique serrated pattern on the fin surface. This pattern creates a turbulent flow in the fluid passing through the tube, which further enhances heat transfer efficiency.

The HFW welding process used to manufacture these finned tubes involves using high-frequency electrical energy to generate heat and melt the surfaces of the tube and fin elements. These are then fused together using pressure and a series of rollers to create a strong, seamless bond.

Overall, serrated spiral HFW finned tubes offer excellent heat transfer performance, durability, and resistance to corrosion and wear, making them a popular choice for a wide range of industrial applications.

What's the advantage of Stainless Steel Serrated Spiral High Frequency Welding HFW Finned Tube?

1. Corrosion Resistance: Stainless steel is highly resistant to corrosion, which makes it an ideal material for applications where the tube may come into contact with harsh chemicals. This increases the longevity of the finned tube, thereby reducing maintenance and replacement costs.

2. High Strength and Durability: Stainless steel has excellent strength and durability, making it a suitable material for use in tough industrial environments. The serrated spiral HFW welding process further enhances the tube's strength and durability, making it more resistant to damage and wear.

3. Superior Heat Transfer Efficiency: The serrated spiral pattern on the fin surface of the tube creates a turbulent flow in the fluid passing through it, effectively increasing the heat transfer efficiency. This results in faster and more efficient heat transfer, which translates into lower operating costs.

4. Improved Aesthetics: Stainless steel has an attractive and polished appearance that enhances the aesthetics of any equipment or application it's used in. This is particularly relevant in industrial plants or facilities where the equipment is visible.

What's the Chemial Compostion of A312 TP347?

The A312 TP347 is a type of stainless steel pipe that is used in high temperature and corrosive environments.

- Carbon (C): 0.08% max
- Manganese (Mn): 2.00% max
- Phosphorus (P): 0.045% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0.75% max
- Chromium (Cr): 17.00 - 20.00%
- Nickel (Ni): 9.00 - 13.00%
- Columbium/Tantalum (Cb+Ta): 10(C) - 1.00% max

What's the Mechanical Property of A312 TP347?

- Tensile strength: ≥515 MPa (75,000 psi)
- Yield strength: ≥205 MPa (30,000 psi)
- Elongation: ≥35%
- Hardness: ≤ 201 HBW

These mechanical properties make A312 TP347 particularly suitable for high-temperature applications, as it has excellent strength, toughness and ductility even at elevated temperatures. The high tensile strength, coupled with the material's resistance to corrosion, makes it a reliable choice for applications such as gas or oil-fired furnaces and boilers, heat exchangers, and other high-temperature environments.

What are the main applications of serrated spiral high frequency welding (HFW) finned tubes?

1. Power Plants: Serrated spiral HFW finned tubes are commonly used in power plants for heat exchangers, air preheaters, and other equipment that requires efficient heat transfer. They are particularly suitable for use in high-temperature gas streams.

2. Chemical Plants: These finned tubes are used in various chemical plant applications such as heat exchangers, condensers, and reactors. The serrated spiral HFW welding process used to manufacture the tubing makes it more durable and resistant to corrosive chemicals.

3. Oil Refineries: Oil refineries use serrated spiral HFW finned tubes in heat exchangers, process heaters, and boilers. The tubes are resistant to corrosion and can withstand high-pressure and high-temperature steam or gas.

4. HVAC Systems: HVAC systems use finned tubes for heat transfer between air and fluid streams. Serrated spiral HFW finned tubes offer improved heat transfer efficiency and resistance to corrosion and wear, making them suitable for use in HVAC systems.