DELLOK Welded Longitudinal Finned Tube 16-273mm OD for Tank Heaters and Industrial Applications
DELLOK Welded Longitudinal Finned Tubes are precision-engineered heat transfer components manufactured using advanced resistance welding technology. These tubes feature fins welded longitudinally along the tube length, creating efficient heat exchange surfaces ideal for tank heaters and industrial heating applications.
Our longitudinal finned tubes are produced through precision resistance welding, where U-shaped fin channels are welded diametrically opposed along the tube length. This advanced manufacturing technique ensures optimal heat transfer performance and structural integrity.
- U-bend tubes with longitudinal fins and fin tube coils available upon request
- Multiple fin types: one-piece shape, standard U-bent shape, cut & twist, perforated type
- Fin channels welded in opposite pairs for balanced thermal performance
- Customizable fin height, quantity, and thickness to meet specific requirements
- Compatible with both OD tubes and NB pipe configurations
Significantly increases heat transfer rates for viscous liquids and improves overall thermal efficiency.
Reduces installation space requirements while maintaining high heat transfer surface area.
Lowers equipment costs and reduces operational expenses through improved pressure drop characteristics.
Enhanced tube stiffness and improved seismic performance for reliable long-term operation.
| Parameter | Metric Range | Imperial Range |
|---|---|---|
| Tube Outer Diameter | 16-273 mm | 3/8"-10" (NPS) |
| Tube Wall Thickness | 2.11-25.4 mm | 0.08"-1" |
| Tube Length | ≤12,000 mm | ≤39 ft |
| Fin Thickness | 1.0-1.5 mm | 0.04"-0.06" |
| Fin Height | 5-25 mm | 0.2"-0.98" |
| Fin Pitch | 1U-36U | |
| Fin Type | "U" or "I/L" | |
Fin Materials: Carbon Steel (Q235B), Stainless Steel (AISI 304, 316, 409, 410, 321, 347), Alloy Steel
Tube Materials: Carbon Steel (A106 Gr.B), Stainless Steel (TP304, 316, 321, 347), Alloy Steel (T/P5, 9, 11, 22, 91)
Each product is manufactured to customer specifications, meeting or exceeding applicable codes and standards. Comprehensive inspection documentation and third-party verification available.
Dedicated support for both pre-sales and after-sales requirements, with flexible processing options including customer-supplied materials.
24/7 manufacturing capability with rapid quote processing and emergency contact availability to meet urgent delivery timelines.
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