U Bend HFW Fin Tubes ASTM A106 Gr B Carbon Steel Tubos Aletados For Economizers
| Attribute | Value |
|---|---|
| Product | Fin Tubes |
| Type | High Frequency Welding Fin Tubes |
| Standard | ASTM A106 |
| Material | Gr. B Base pipes and CS Fins |
| Length | Custom according to requirements |
| Size and details | Custom according to requirements |
| Use | Heat Exchanger / Boiler / Furnaces / Economizers / Condensers / Evaporators |
| Packing | Ply-wooden Case With Iron Frame |
U bend tubes are designed for efficient heat exchange in process fluids within large radiators. The fluid flows through a U-Junction and returns along a parallel pipe to the inflow line. Our high frequency welding fin tubes utilize advanced welding technology that fuses metal edges using high-frequency electrical currents for superior bonding.
U bend fin tubes are created either by bending straight fin tubes or by welding 180° U bend elbows to straight finished finned tubes. Available materials include carbon steel, alloy, and stainless steel for both base tubes and fins.
This specification covers seamless carbon steel pipe for high-temperature service in sizes from NPS 1/8 to NPS 48 [DN 6 to DN 1200].
| Grade | C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
|---|---|---|---|---|---|---|---|---|---|---|
| Gr. B | 0.30 | 0.29-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
| Grade | Tensile Strength (min) | Yield Strength (0.2% Offset, min) |
|---|---|---|
| Gr.B | 60ksi (415 MPa) | 35ksi (240 MPa) |
- High welding speed with minimal heat affected zone for superior weld microstructure
- Large heat exchange area reduces required installation space
- Excellent corrosion resistance and wear resistance
- Low contact thermal resistance with high stability
- Superior anti-ash performance
- Reduced tube side pressure drop lowers operational costs
- Enhanced stiffness and seismic performance
- Economizers
- Furnaces
- Heater of Driers
- Combustion Heater
- Condensers
- Evaporators
- Steam Coils
- Heat Exchanger
- Waste Heat Recovery
- Various Coolers (Air, Oil, Hydrogen, Generator)
| Type | Description | Base tube O.D. (mm) | Fin pitch (mm) | Fin height (mm) | Fin thickness (mm) |
|---|---|---|---|---|---|
| Embedded | G-type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6~10 | <17 | 0.2-0.4 |
| Low fin tube | T-type fin tube | 10-38 | 0.6~2 | <1.6 | ~0.3 |
| Bamboo tube | Corrugated tube | 16-51 | 8.0~30 | <2.5 | ~0.3 |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
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