A312 TP304H Stainless Steel Solid Finned Tube for Air Heater
A312 TP304H Stainless Steel Solid Finned Tube for Air Heater is a high-efficiency heat transfer element designed for high-temperature and high-pressure environments, especially suitable for equipment such as air heaters.
- Material: TP304H stainless steel (containing 0.04~0.10% carbon, 18~20% chromium, 8~11% nickel), corrosion-resistant and high-temperature strength.
- Specifications: Outer diameter 18~273mm, fin thickness 0.6-3.5mm, fin height 10-25mm, fin spacing: greater than or equal to 4mm, customizable fin height and density.
- Process: High-frequency resistance welding fins, high bonding strength, and heat dissipation efficiency increased by more than 30%.
Product Details
A312 tp304H stainless steel solid finned tube in air heaters is particularly suitable for conditions with high air-side thermal resistance due to its characteristics of high temperature and pressure resistance, efficient heat transfer, and corrosion resistance.
I. Material Advantages: High Temperature and Pressure Resistance, Corrosion Resistance
TP304H stainless steel contains 0.04~0.10% carbon, 18~20% chromium, and 8~10.5% nickel. Its structure is optimized through solution heat treatment, allowing for long-term operating temperatures of 550~870℃ and an oxidation resistance temperature of 850℃.
It has strong corrosion resistance, with high tolerance to oxidizing media, weak acids, and weak bases, making it suitable for petrochemical, food processing, and pharmaceutical environments.
II. Process Advantages: High-Frequency Resistance Welded Fins, High Heat Dissipation Efficiency
High-frequency resistance welded fins have high bonding strength, increasing heat dissipation efficiency by more than 30%.
Fin designs (such as corrugated fins and louvered fins) further enhance heat transfer by increasing fluid turbulence and heat exchange area.
III. Application Scenarios: High-Efficiency Requirements for Air Heaters
High air-side thermal resistance: Gases have weak thermal conductivity; adding fins significantly enhances heat transfer and reduces energy loss.
Stable heating: Finned tubes perform exceptionally well in environments requiring continuous and stable heating, such as food drying and wood drying kilns.
Energy-saving design: Finned tubes are one of the core technologies in energy-saving design, significantly improving heat exchange efficiency by increasing the heat dissipation area.
IV. Actual Effects: High Efficiency and Energy Saving, Low Maintenance Frequency
Uniform hot air distribution: Finned tubes made of 304 stainless steel, combined with high-frequency aluminum rolled fins, result in more uniform hot air distribution and reduced energy consumption.
Stable operation: Finned tubes are less prone to dust accumulation and blockage during long-term operation, resulting in low maintenance frequency and precise workshop temperature control.
- Datasheet
- Drawing
- Certificates
| Parameter | Specification |
|---|---|
| Base Tube Material | CS (A106, A333, A179, A210, P5, P11, P22), SS (SS304, SS316, Duplex SS2205, Super Duplex SS32750), Nickel Alloys (825, Inconel Alloy 625, High chrome high nickel incoloy alloy Monel 400) |
| Tube OD | 15.88 mm ~ 273 mm or customized |
| Tube Wall Thick | 2 mm ~ 28.6 mm |
| Length | 1 Meters to 28 Meters (92 feet) |
| Fin Material | CS (08F, SPCC), SS (SS304, SS316, 409, 410, 321, 347) |
| Fin Height | 8 mm ~ 35 mm |
| Fin Thick | 1 mm ~ 1.5 mm |
| Fin Pitch | 3 ~ 333 FPM (1 FPI ~ 7 FPI) |
| Fin Type | Solid, U Type, S Type, Serrated |
| Finned tube welding rate | more than 98% |
| Tube Ends | Plain cut or beveled at any degree |
High Frequency Welded Carbon Steel Finned Tube Appearance Dimension Inspection
High frequency welded carbon steel finned tube appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
High Frequency Welded Carbon Steel Finned Tube Bending Processing
Bending of fin tubes is an important step in the production process of high frequency welded carbon steel finned tubes. Bending is to bend the finned tube material through specific mechanical equipment to form a suitable curvature to meet different usage requirements.
This step requires strict control of the bending angle and curvature to ensure the fit between the fin and the base tube and the heat dissipation effect.
High Frequency Welded Carbon Steel Finned Tube Pull Off Test
High frequency welded carbon steel finned tubes pull-off test is a test used to detect whether the fin tube will fall off when subjected to tension, mainly used to ensure the quality and reliability of the fin tube.
Datang’s this test is very important in the production process because the high frequency welded carbon steel finned tubes will be subjected to various stresses during operation, such as temperature changes and pipe expansion, which may cause the fin to fall off, thereby affecting the performance and safety of the heat exchanger .
