ASTM A213 Alloy Stainless Steel T9 Welding Studded Finned Tube for Heat Exchanger
Studded finned 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.
This design of this type finned tube 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 welding studded finned tube of many materiales and we sell this type of fin tubes in over 70 countries.This type of finned tube has excellent enhanced heat creation effect, reduces heat transfer resistance, and improves heat transfer coefficient.
| Base Tube Material | Stainless steel: ASME SA213/ASTM A213, ASME SA249/A249 ,ASME SA312/A312 (TP304,304L, TP304H, TP310S, TP310H, TP316L, TP316H, TP316Ti, TP317,T P317L, 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 |
| Stud material | Carbon Steel, Stainless Steel And Alloy Steel (Any Ferrous Material) |
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.
Chemical Composition (%)--MAX
| 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
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) | Elongation | Brinell/Vickers | Rockwell |
| T9 | 60ksi,415MPa | 30ksi,205MPa | 30% | 179 HBW/190 HV | 89 HRB |
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 |
Application
Boilers (Calderas)
Economizers
Waste Heat Recovery
Air Coolers / Oil Coolers / Hydrogen Coolers / Generator Coolers
Air Cooling Heat Exchanger / Super Heaters / Fired heaters / HRSG
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ASTM A213 Alloy Stainless Steel T9 Welding Studded Finned Tube For Heat Exchanger Images
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