High-Frequency Welded (HFW) Helical Finned Tubes are high-efficiency heat transfer elements designed for heavy-duty thermal applications. Datang Finned Tube offers a comprehensive range of standard specifications as well as custom dimensions tailored to your engineering requirements.
High-Frequency Welded (HFW) Helical Finned Tubes Key Manufacturing Capability & Specifications:
-
Base Tube Material: Carbon Steel, Stainless Steel, Alloy Steel (Seamless or Welded)
-
Base Tube OD (D): 18 mm – 273 mm
-
Base Tube Thickness (S): 3.0 mm – 5.0 mm
-
Fin Pitch (t): 4 mm – 50 mm
-
Fin Height (hf): Customized based on thermal transfer requirement
-
Applications: Boilers, Petrochemical Heat Exchangers, HRSG Systems, Air Preheaters, and Waste Heat Recovery Units.
Specification and Parameter Table for High-Frequency Welded Helical Finned Tubes (Materials: Carbon Steel, Stainless Steel; Base Tube: Seamless Pipe, Welded Pipe)
| Steel Pipe | Steel Strip | Strip Wrapped per Meter of Pipe | Heat Transfer Area per Meter of Finned Tube | ||||
| Specification | Weight (kg/m) | Pitch (mm) | Specification | Weight (kg/m) | Length (mm) | Weight (kg/m) | |
| 25×3 | 1.63 | 5 | 1.2×15 | 0.141 | 25.15 | 3.55 | 0.833 |
| 25×3 | 1.63 | 6 | 1.2×15 | 0.141 | 20.94 | 2.96 | 0.707 |
| 25×3 | 1.63 | 7 | 1.2×18 | 0.169 | 19.3 | 3.28 | 0.773 |
| 25×3 | 1.63 | 8 | 1.2×20 | 0.188 | 17.7 | 3.33 | 0.787 |
| 32×3 | 2.15 | 6 | 1.2×15 | 0.141 | 24.61 | 3.48 | 0.839 |
| 32×3 | 2.15 | 7 | 1.2×17 | 0.16 | 21.99 | 3.52 | 0.848 |
| 32×3 | 2.15 | 8 | 1.2×20 | 0.188 | 20.42 | 3.85 | 0.917 |
| 32×3 | 2.15 | 10 | 1.2×22 | 0.207 | 16.96 | 3.51 | 0.847 |
| 38×3.5 | 2.98 | 7 | 1.2×20 | 0.188 | 26.05 | 4.91 | 1.161 |
| 38×3.5 | 2.98 | 8 | 1.2×20 | 0.188 | 22.8 | 4.3 | 1.031 |
| 38×3.5 | 2.98 | 10 | 1.2×20 | 3.188 | 18.25 | 3.44 | 0.849 |
| 42×3.5 | 3.32 | 7 | 1.2×20 | 0.188 | 27.84 | 5.25 | 1.246 |
| 42×3.5 | 3.32 | 8 | 1.2×20 | 0.157 | 20.44 | 3.21 | 0.54 |
| 42×3.5 | 3.32 | 10 | 2×10 | 0.188 | 19.5 | 3.67 | 0.012 |
| 48×3.5 | 3.84 | 7 | 1.2×20 | 0.16 | 29.19 | 4.67 | 1.143 |
| 48×3.5 | 3.84 | 8 | 1.2×17 | 0.16 | 25.55 | 4.09 | 1.019 |
| 48×3.5 | 3.84 | 10 | 1.2×17 | 0.188 | 21.39 | 4.03 | 1.006 |
| 51×3.5 | 4.1 | 8 | 1.2×20 | 0.16 | 26.72 | 4.28 | 1.069 |
| 51×3.5 | 4.1 | 10 | 1.2×17 | 0.16 | 21.39 | 3.43 | 0.887 |
| 51×3.5 | 4.1 | 12 | 1.2×17 | 0.188 | 18.61 | 3.51 | 0.905 |
| 57×3.5 | 4.62 | 8 | 1.2×20 | 0.188 | 30.25 | 5.7 | 1.389 |
| 57×3.5 | 4.62 | 10 | 1.2×20 | 0.188 | 24.21 | 4.56 | 1.147 |
| 57×3.5 | 4.62 | 12 | 1.2×20 | 0.188 | 20.18 | 3.8 | 0.986 |
| 60×3.5 | 4.88 | 10 | 1.2×20 | 0.188 | 25.15 | 4.74 | 1.194 |
| 60×3.5 | 4.88 | 12 | 2×20 | 0.314 | 20.97 | 6.58 | 1.027 |
| 70×3.5 | 5.74 | 10 | 1.6×20 | 0.251 | 28.29 | 7.11 | 1.352 |
| 70×3.5 | 5.74 | 12 | 2×20 | 0.314 | 23.58 | 7.4 | 1.163 |
| 76×4.0 | 7.1 | 10 | 1.6×20 | 0.251 | 30.18 | 7.58 | 1.446 |
| 76×4.0 | 7.1 | 12 | 2×20 | 0.314 | 25.15 | 7.9 | 1.245 |
| 83×5.0 | 9.62 | 10 | 1.6×20 | 0.251 | 32.37 | 8.13 | 1.556 |
| 83×5.0 | 9.62 | 12 | 2×20 | 0.314 | 26.97 | 8.47 | 1.34 |
| 89×5.0 | 10.38 | 10 | 1.6×20 | 0.251 | 34.26 | 8.61 | 1.65 |
| 89×5.0 | 10.38 | 12 | 2×20 | 0.314 | 28.55 | 8.96 | 1.422 |
| 108×5.0 | 12.7 | 10 | 1.6×20 | 0.251 | 40.22 | 10.1 | 1.948 |
| 108×5.0 | 12.7 | 12 | 2×20 | 0.314 | 33.53 | 10.53 | 1.68 |
| 133×5.0 | 15.75 | 10 | 1.6×20 | 0.251 | 48.08 | 12.08 | 2.341 |
| 133×5.0 | 15.75 | 12 | 2×20 | 0.314 | 40.07 | 12.58 | 2.021 |
-
D — Outer diameter of base tube, mm;
-
hf — Fin height, mm;
-
L — Total length of finned tube, mm;
-
Lf — Finned length of finned tube, mm;
-
S — Wall thickness of base tube, mm;
-
Sf — Steel strip thickness, mm;
-
t — Fin pitch of finned tube, mm;