| Standard: | ASTM A106 | Material: | Gr. B |
|---|---|---|---|
| Type: | U Type HFW Finned Tube | Tube Material: | Carbon Steel |
| Application: | Heater Parts，Refrigeration Parts，Heat Exchanger，etc | Packing: | Ply-wooden Case With Steel Frame |
| High Light: | Heat Exchanger Finned Tube， U Finned Tube， Carbon Steel Finned Tube | ||
ASTM A106 Gr B Carbon Steel U Type HF Welding Heat Exchanger Finned Tube
HFW Fin Tube is one of the most widely used spiral finned tubes， and are now widely used in waste heat recovery in electric power， metallurgy， cement industries， and petrochemical industries. It also called solid type fin tube，use the skin effect and proximity effect of high-frequency current to heat the outer surface of the steel strip and steel pipe while the steel strip is wound around the steel pipe until it is in a plastic state or melted and complete the welding.
This type fin tube can improving heat transfer efficiency much more than bare tube. This high-frequency welding is actually a solid-phase welding.Due to the tight welding of the fins to the base pipe / tube， these finned tubes are often used in vibrating conditions.
TONG CHUANG Group offers ASTM A106 Gr. B HF Welding carbon steel U-Finned Tube and we sell this type of fin tubes in over 70 countries.
ASTM A106 This specification covers seamless carbon steel pipe for high-temperature service (Note 1) in NPS 1 ⁄ 8 to NPS 48 [DN 6 to DN 1200] (Note 2) inclusive， with nominal (average) wall thickness as given in ASME B36.10M. It shall be permissible to furnish pipe having other dimensions provided such pipe complies with all other requirements of this specification
Chemical Composition max %
| Grade | C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| Gr B | 0.3 | 0.29-1.06 | 0.035 | 0.35 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
Mechanical Properties
| Grade | Tensile Strength，min | Yield Strength (0.2%Offset，min) | Elongation |
| Gr. B | 66ksi ， 415MPa | 35ksi ， 240MPa | 30% |
Specification of HFW Tube
Base pipe O.D: 15.88-219.1mm
Fin height: 6-50mm
Fin thickness: 0.3-3.0mm
Fin pitch: as customer's request.
End: Plain Ends， Beveled Ends
No fin area on both side: As Customer's request and drawing
Specifications For Various Types Of Finned Tubes That We Can Offer
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tueb | 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 | / | |
| 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 tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 | |
| Studed fin tube | 25-219 | 8~30 | 5~35 | φ5-20 | |
| Bare Tube Material | Stainless steel: ASME SA213/ASTM A213， ASME SA249/A249 ，ASME SA312/A312 ( TP304，304L， TP304H， TP310S， TP310H， TP316L， TP316H， TP316Ti， TP317， TP317L， TP321，TP321H， TP347， TP347H， TP904L ) |
| Duplex/Super Duplex Steel: ASME SA789/A789 ， ASME SA790/A790 ( S31803， S32205， S32750， S31500， S32304， S32900 ) | |
| Carbon Steel: ASME SA106/ASTM A106 Gr B， Gr C， ASME SA179/ASTM A179， ASME SA192/ASTM A192， ASTM A214， ASTM A210 Gr.A1， Gr.C. | |
Alloy Steel:ASME SA213/ASTM A213 T2， T11， T12， T22， T23， T5， T9， T91， T92 ; ASME SA335 /ASTM A335 P1， P11， P12， P22， P23， P5， P9 ， P91， P92 ， 16Mo3， 15Mo3， 13CrMo-4， 12Cr1MoVG | |
| Fin material | Carbon Steel， Stainless Steel And Alloy Steel (Any Ferrous Material) |
Application
Heat Exchanger
CoolersWaste Heat Recovery
Air Conditioning / Air Heaters
Steam Coils， Steam Condensers
Air Coolers / Oil Coolers / Hydrogen Coolers / Generator， etc
Inspections and Tests
| Inspections and Tests:G-fin; L-fin; LL-fin; KL-fin; Extruded-fin Finned Tubes | |||
| 1.Chemical Composition | |||
| 2.Mechanical Properties | |||
| 3.Hydrostatic Test | |||
| 4.Pneumatic Test | |||
| 5.Boroscopic Inspection | |||
| 6.Eddy Current Test | |||
| 7.Tensile Test (only for bimetallic tube) |
