ASME SA213 T12 Low Alloy Ferritic Stainless Steel HFW Fin Tube For Heat Exchangers
YUHONG GROUP has been operating stainless steel/duplex/nickel seamless fin tubes for more than 30 years, with annual sales of more than 80,000 tons of stainless steel/duplex/nickel seamless fin tubes. Our clients have covered more than 80 countries. Our stainless steel seamless fin tubes are widely used in mining, energy, petrochemical, chemical, food mills, paper mills, gas and fluid industries and more.
HFW solid fin tube is the abbreviation of high frequency welded spiral solid fin tube. Spiral fin tubes offer designers high thermal efficiency and a compact design solution for a full range of heat exchangers using clean flue gas. There are two types of spiral fin tubes: solid type and serrated type.
Helical solid fin tubes are made by helically wrapping a continuous strip of fins around the tube. High frequency resistance welding typically uses a frequency of 400 kHz. The fins are wrapped around the tube and welded continuously. The fin tape is helically wound on the tube and welded continuously to the base tube along the root of the helix by a high frequency electrical process. The fin strips are held under tension and laterally constrained as they are formed around the tube, ensuring firm contact between the fin strips and the surface of the base tube. Using a gas metal arc welding process, a continuous weld is made at the point where the fin strip first begins to bend around the pipe diameter.
Chemical Requirements:
| Grade | UNS Designation | Composition, % |
| Carbon | Manganese | Phosphorus, max | Sulfur, max | Silicon | Chromium | Molybdenum |
| T2 | K11547 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 |
| T5 | K41545 | 0.15 | 0.30-0.60 | 0.025 | 0.50 | 0.50 | 4.00-6.00 | 0.45-0.65 |
| T9 | K90941 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
| T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| T12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 | 0.80-1.25 | 0.44-0.65 |
| T17 | K12047 | 0.15-0.25 | 0.30-0.61 | 0.025 | 0.025 | 0.5 | 0.80-1.25 | 0.44-0.65 |
| T21 | K31545 | 0.05-0.15 | 0..30-0.60 | 0.025 | 0.025 | 0.5-1.00 | 2.65-3.35 | 0.80-1.06 |
| T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 1.90-2.60 | 0.05-0.30 |
Technical details/base tube details/Fin details
Tube Diameter: Min. OD 16mm to Max. OD 219mm.
Tube Thickness: Min. 2mm to 16mm
Tube material: stainless steel, alloy steel, carbon steel, Corten steel, duplex steel, super duplex steel, Inconel, high chromium high nickel and some materials such as Incolloy, CK 20 material.
Fin detail
Fin Thickness: Min. 0.8 mm to max. 3 mm
Fin Height: 5 mm minimum to 30 mm maximum
Fin Density: Minimum 43 fins per meter, maximum. 287 fins per meter
Materials: Carbon Steel, Stainless Steel, Alloy Steel, Weathering Steel, Duplex Steel and Incolloy.
If you need a quick quote, please send as follows:
1. The number of pieces,
2. Base tubee: (1) diameter, (2) thickness, (3) length and (4) material specification.
3. Fins: (1) material specification, (2) type (solid or serrated), (3) height, (4) thickness, (5) pitch, (5) fin length and (6) finless section .
If necessary, weld preparation details.
4. Desired delivery date.
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ASME SA213 T12 Low Alloy Ferritic Stainless Steel HFW Fin Tube For Heat Exchangers Images
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