Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM B111 HFW 70% Cu 30% Ni C71500 Copper Alloy Steel Fin Tube For Radiador
YUHONG Group offers ASTM B111 C71500 HF Welding copper alloy steel Fin Tube and we sell this type of fin tubes in over 70 countries.
HFW Fin tube has many types: Serrated Fin Tube , Flat Fin Tube, Studded Fin Tube .
HFW Fin Tube is one of the most widely used spiral finned tubes, and now are widely used in waste heat recovery in electric power, metallurgy, cement industries, and petrochemical industries. It 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.
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.
Specifications For Types Of Finned Tubes 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 | |
Material Base Pipe/Tube:
1.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
2.Duplex/Super Duplex Steel: ASME SA789/A789 , ASME SA790/A790: S31803, S32205, S32750, S31500, S32304, S32900
3.Carbon Steel : ASME SA106/ASTM A106 Gr B, Gr C, ASME SA179/ASTM A179, ASME SA192/ASTM A192, ASTM A214, ASTM A210
4.Alloy Steel : ASME SA213/ASTM A213 T1, T11, T12, T22, T23, T5, T9, T91, T92 ; ASME SA335 /ASTM A335 P1, P11, P12, P22, P23, P5, P9, etc
5.Nickel Alloy Steel Grade:Hestalloy:C-276, C-4, C-22, C-2000, X, B-2, B-3, G-30, G-35. Monel:400,401, 404, R-405, K500.
6.Inconel:600, 601, 617, 625, 690, 718, 740, X-750. Incoloy:800, 800H, 800HT, 825, 840.
7.Pure Nickel:Ni-200, Ni-201, Ni-270. NS Alloy:Ns 1101, NS1102, NS1103,NS3105. Copper Alloy Steel: ASTM B111(70400, C70600, C71500, C71640, C68700, C44300)
Fin material: Alloy Steel , Stainless Steel , Carbon Steel .
Specification of HFW Tube we can offer
Base Tube/Pipe Outer diameter: 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
Detailes Of ASTM B111 C71500 Base Tube
ASTM B111 This specification establishes requirements for seamless tube and ferrule stock of copper and various copper alloys up to 31 ⁄ 8 in. (80 mm), inclusive, in diameter, for use in surface condensers, evaporators, and heat exchangers.
Chemical Composition max %
| Grade | Cu | Ni | Pb | Fe | Zn | Mn |
| C71500 | remainder | 29-33 | 0.05 | 0.4-1 | 1 | 1 |
Mechanical Properties
| Grade | Formar | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| C71500 | annealed | ksi-52 | psi-18 |
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) |
Application
Heat exchangers for power plants
Steam Coils
Chemical and Petrochemical industries
Air Coolers / Oil Coolers / Hydrogen Coolers / Generator Coolers
Waste Heat Recovery
Air Perheaters / Air Conditioning / Air Heaters
Steam Condensers,etc
1.Number of Pieces.
2.Base Tube: Diameter, thickness, length and material specification.
3.Fins: material specification, type (solid or serrated), height, thickness, spacing, finned length and unfinned sections. Weld prep details if required.
4.Delivery period required.
