HFW Finned Tube
High-frequency welding spiral finned tube uses the skin effect and proximity effect of high-frequency current to heat the outer surface of the steel strip and steel pipe when the steel strip is wound around the steel pipe until it becomes plastic or melts. Under a certain pressure of the winding steel strip Complete welding below. This high-frequency welding is actually a solid phase welding. Compared with inlaying, brazing (or overall hot-dip galvanizing) and other methods, it is more advanced in terms of product quality (the welding rate of fins is high, up to 95%), productivity and automation.
- Base tube material:
stainless steel, carbon steel, alloy steel
ASME SA213/ASTM A213 TP304/304L TP316/TP316L TP321 TP310S TP317,
ASME SA106/ASTM A106 Gr B Gr C,ASME SA179/ASTM A179,ASME SA192/ASTM A192
- Fin material:
Alloy steel, Stainless steel High Frequency Welded fins tube, carbon steel High Frequency Welded fins tube Duplex High Frequency Welded fins tube super duplex High Frequency Welded fins tube Air cooler fins tube, Air preheater fins tube.
Extruded fins tube Serrated fin tubes L Type fins tube G Type fins tube LL Type fins tube H Type fins tube KL Type fins tube HFW fin tube laser welded fin tube.
- Base pipe O.D: 15.88-165mm
Fin height: 6-50mm
Fin thickness: 0.3-0.5mm
Fin pitch: as customer's request.
End: Plain Ends, Beveled Ends
No fin area on both side: As Customer's request and drawing
HFW Finned Tube Size and Material:
|
Tube O.D.: |
16 to 273 (mm) |
3/8" to 10"(NPS) |
|
Tube Wall Thk.: |
2 to 28.6 (mm) |
0.08" to 1.1" |
|
Tube Length: |
≤28,000 (mm) |
≤92 ft |
|
Fin Thk.: |
0.5 to 3.5 (mm) |
0.02" to 0.14" |
|
Fin Height: |
8 to 35 (mm) |
0.31" to 1.3" |
|
Fin Pitch: |
3 to 333 FPM |
1 to 8 FPI |
|
Fin Type: |
Solid, "U"or"V" Serrated |
|
|
Fin Material: |
C.S. (most common grade: 08F, SPCC) S.S. (most common grade are AISI 304, 316, 409, 410, 321,347 ) |
|
|
Tube Material: |
C.S. (most common grade: A106 Gr.B, A210, A192) S.S. (most common grade are TP304, 316, 321, 347 ) A.S.(most common grade are T/P5,9,11,22,91 ) Duplex Steel (most common grade are 2205 etc. ) |
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Welded Finned Tube
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