Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A213 Alloy Steel Seamless T22 Studded Tube , Tubo Aletado
Studded 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.
YUHONG Group offers ASTM A213 T22 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.When the flue gas flows through the heat exchange surface of the nail head tube, the smoke-water heat exchange is performed in the heat exchange tube, because the heat exchange surface is increased by the nail head tube, so the heat transfer efficiency is higher.And the surface area of the nail head tube is less ash, which makes the boiler heat transfer performance better and the service life longer.
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 pipe / tube Material We Can Offer
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 Gr.A1, Gr.C.
4.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
5.Nickel Alloy Steel: Hestalloy / Inconel / Pure Nickel / NS Alloy / Copper Alloy Steel
Stud material We Can Offer
Carbon Steel, Stainless Steel And Alloy Steel (Any Ferrous Material)
Detailes Of ASTM A213 Tube
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 K21590
| Grade | C | Mn | P | Su | Si | Cr | Mo |
| T22 | 0.05-0.15 | 0.3-0.6 | 0.025 | 0.025 | 0.5 | 1.9-2.6 | 0.87-1.13 |
Mechanical Properties K21590
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) | Elongation | Brinell/Vickers | Rockwell |
| T22 | ksi-90,MPa-620 | ksi-58,MPa-400 | 20% | 250 HBW/265 HV | 25 HRC |
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
Related Industries Involved
Oil / Petroleum Industry
Metallurgical industry
Power industry
Light industry
Pharmaceutical industry
Food industry
Chemical industry