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Yuhong Holding Group Co.,LTD
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ASTM A213 Seamless T9 Studed Fin Tube For Boiler , Radiador
A studded fin tube refers to a type of heat exchanger tube that has metal studs or fins attached to its outer surface. The purpose of studded fins is to increase the surface area of the tube, which in turn enhances heat transfer efficiency.
Studed Tubes are applied to convection chamber of heating furnace in petrochemical industry to increase the heat transfer coefficient at the fuming side. Studded Tubes are two or three times the square of light Tubes and due to the usage of studded Tubes, the hot strength can be obtained as the same as radiation in the reasonable design.
This design is often used in applications where maximum heat transfer is required, such as in boilers, air conditioning systems, and industrial processes. Studded fin tubes are commonly made from materials like carbon steel, stainless steel, or aluminum.
YUHONG Group offers ASTM A213 T9 welding studed alloy steel fin tube and we sell this type of fin tubes in over 70 countries.It has excellent enhanced heat creation effect, reduces heat transfer resistance, and improves heat transfer coefficient.
Specifications For Various Types Of Finned Tubes
| 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 | |
Base tube
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
Nickel Alloy Steel: Hestalloy / Inconel / Pure Nickel / NS Alloy / Copper Alloy Steel
Stud material
Carbon Steel, Stainless Steel And Alloy Steel (Any Ferrous Material)
Base Tube
Chemical Composition (%)--MAX K90941
| Grade | C | Mn | P | S | Si | Cr | Mo |
| T9 | 0.15 | 0.3-0.6 | 0.025 | 0.025 | 0.25-1 | 8-10 | 0.9-1.1 |
Mechanical Properties K90941
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) | Elongation | Brinell/Vickers | Rockwell |
| T9 | ksi-60,MPa-415 | ksi-30,MPa-205 | 30% | 179 HBW/190 HV | 89 HRB |
ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, etc. Used for boiler, superheater, heat exchanger, or condenser tubes and other application.
Application
1.Boilers (Calderas)
2.Economizers
3.Waste Heat Recovery
4.Air Coolers / Oil Coolers / Hydrogen Coolers / Generator Coolers
5.Air Perheaters / Air Cooling Heat Exchanger / Super Heaters / Fired heaters / HRSG
6.Heat Pipe Technology,etc.