T Type Finned Tube, T-Shaped Finned Tube
T type finned tube is commonly used in various industries, including power generation, heat exchangers, and HVAC systems,air conditioning systems, boilers, and condensers.
- Material: Copper, Stainless Steel, Duplex, Titanium, Nickel Alloys, Copper Nickel (90/10,70/30)
- Size Range: OD 1/2″ to OD 1″
Type: Smooth Bore or Internal Rib
FPI: 19,26,28,36 etc as per your customer’ request
Test: Air test at 250Psi(1.72 Mpa),Hydro Test
What is a T type finned tube?
A T type finned tube is a high-efficiency heat exchange tube. Its innovation lies in forming a series of spiral T-shaped tunnels on the outer surface of ordinary tubing by winding it. This unique design facilitates rapid bubble expulsion, significantly improving heat transfer efficiency. The tube body and fins are integrally molded, ensuring uniformity and strength, making its performance superior to traditional tubing.
Working Principle of a T type finned tube
The working principle of a T type finned tube is as follows: When the medium outside the tube is heated, bubble nuclei form within the spiral tunnels. As the bubble nuclei expand and fill the inner cavity, the pressure increases, causing the bubbles to be rapidly ejected from the slits in the tube wall. This ejection creates a local negative pressure, drawing in cooler liquid and achieving continuous boiling. This process significantly improves heat transfer capacity, making T type finned tubes an ideal choice for heat exchangers.
Advantages of Low Finned Tube-T Fin
Improved Heat Transfer Efficiency: T-shaped finned tubes exhibit superior heat transfer efficiency. Studies show that in R113 medium, the boiling heat transfer coefficient of T-shaped finned tubes is 1.6 to 3.3 times higher than that of smooth tubes. This is mainly due to their ability to generate high-density and continuous boiling at a lower temperature difference.
Cost-Effectiveness: T-shaped finned tubes are more economical than aluminum porous surface heat exchange tubes. This cost advantage makes them an ideal choice for industries looking to optimize their heat exchange systems without incurring high costs.
Low Risk of Scaling: The strong gas-liquid turbulence and high-speed gas jets within the T-tunnel effectively prevent scaling on the tube walls. This ensures long-term, efficient operation and service life of the heat exchange system while minimizing maintenance needs.
Wide Applications: T-shaped finned tubes are suitable for various industrial applications, especially in the petrochemical and energy sectors. They are effective in environments where the shell-side medium does not contain solid particles or colloids.
Extruded T Low finned tubes are manufactured by extruding solid fin strips on a specialized machine capable of producing T-shaped cross-sections. The T-fin strips are then tightly wound around the outer surface of the base tube to form a continuous helical finned tube.
Specification of T-shaped finned tube:
16 FINS / INCH FIN PITCH M = 1.59mm
| Plain section | Finned section | |||||||||||
| Code No. | External
Ø |
Int. | Wallthickn. | Root dia.
Ø |
Ext.
Ø |
Wall-thickn. | Ext. surface | Radio outs.
to ins. |
Weight | |||
| Inch | d1 | d2 | S1 | Int. d3 | Ext. d4 | d5 | BWG | S2 | Aa | Aa/Ai | G Cu | |
| mm | mm | mm | mm | mm | mm | mm | m²/m | ca. kg/m | ||||
| 16.1/2.19
16.1/2.18 |
1/2″ | 12,70 | 9,80
9,40 |
1,45
1,65 |
7,50
7,00 |
9,50 | 12,50 | 19
18 |
1,00
1,25 |
0,08 | 3,6
3,8 |
0,38
0,43 |
| 16.5/8.17
16.5/8.16 |
5/8″ | 15,90 | 11,90
11,60 |
2,00
2,15 |
9,70
9,40 |
12,70 | 15,70 | 17
16 |
1,50
1,65 |
0,11 | 3,6
3,7 |
0,65
0,69 |
| 16.3/4.17
16.3/4.16 16.3/4.14 |
3/4″ | 19,00 | 15,00
14,70 14,00 |
2,00
2,15 2,50 |
12,80
12,50 11,60 |
15,80 | 18,80 | 17
16 14 |
1,50
1,65 2,10 |
0,13 | 3,3
3,4 3,6 |
0,83
0,88 1,03 |
| 16.7/8.17
16.7/8.16 16.7/8.14 |
7/8″ | 22,20 | 18,20
17,90 17,20 |
2,00
2,15 2,50 |
16,00
15,70 14,80 |
19,00 | 22,00 | 17
16 14 |
1,50
1,65 2,10 |
0,16 | 3,1
3,2 3,3 |
1,00
1,06 1,25 |
| 16.1.17
16.1.16 16.1.14 |
1″ | 25,40 | 21,40
21,10 20,40 |
2,00
2,15 2,50 |
19,20
18,90 18,00 |
22,20 | 25,20 | 17
16 14 |
1,50
1,65 2,10 |
0,18 | 3,0
3,1 3,2 |
1,18
1,25 1,49 |
19 FINS / INCH FIN PITCH M = 1.33mm
| 19.1/2.21
19.1/2.20 19.1/2.19 19.1/2.18 |
1/2″ | 12,70 | 10,30
10,10 9,90 9,50 |
1,20
1,30 1,40 1,60 |
7,90
7,70 7,50 7,00 |
9,50 | 12,50 | 21
20 19 18 |
0,80
0,90 1,00 1,25 |
0,10 | 4,0
4,1 4,2 4,5 |
0,32
0,34 0,38 0,42 |
| 19.5/8.21
19.5/8.20 19.5/8.19 19.5/8.18 19.5/8.17 19.5/8.16 |
5/8″ | 15,90 | 13,40
13,20 13,00 12,60 11,90 11,60 |
1,25
1,35 1,45 1,65 2,00 2,15 |
11,10
10,90 10,70 10,20 9,70 9,40 |
12,70 | 15,70 | 21
20 19 18 17 16 |
0,80
0,90 1,00 1,25 1,50 1,65 |
0,12 | 3,6
3,7 3,8 4,0 4,2 4,3 |
0,44
0,47 0,51 0,58 0,69 0,74 |
| 19.3/4.20
19.3/4.19 19.3/4.18 19.3/4.17 19.3/4.16 19.3/4.14 |
3/4″ | 19,00 | 16,30
16,10 15,70 15,00 14,80 14,10 |
1,35
1,45 1,65 2,00 2,10 2,45 |
14,00
13,80 13,30 12,80 12,50 11,60 |
15,80 | 18,80 | 20
19 18 17 16 14 |
0,90
1,00 1,25 1,50 1,65 2,10 |
0,15 | 3,5
3,6 3,7 3,8 3,9 4,2 |
0,61
0,63 0,72 0,83 0,88 1,03 |
| 19.7/8.19
19.7/8.18 19.7/8.17 19.7/8.16 19.7/8.14 |
7/8″ | 22,20 | 19,30
18,90 18,20 18,00 17,30 |
1,45
1,65 2,00 2,10 2,45 |
17,00
16,50 16,00 15,70 14,80 |
19,00 | 22,00 | 19
18 17 16 14 |
1,00
1,25 1,50 1,65 2,10 |
0,18 | 3,4
3,5 3,6 3,7 3,9 |
0,80
0,89 1,00 1,07 1,26 |
| 19.1.18
19.1.17 19.1.16 19.1.14 |
1″ | 25,40 | 22,10
21,40 21,10 20,50 |
1,65
2,00 2,15 2,45 |
19,70
19,20 18,90 18,00 |
22,20 | 25,20 | 18
17 16 14 |
1,25
1,50 1,65 2,10 |
0,21 | 3,4
3,5 3,6 3,7 |
1,05
1,19 1,27 1,50 |
26 FINS / INCH FIN PITCH M = 0.97mm
- T-shaped finned tube material:
| Material | ASTM | DIN | German Mat.-No. | BS | Grade |
| Carbon Steel
Carbon Steel Carbon Steel Carbon Steel |
A 179
A 192 / A 161 Gr. LC A 210 Gr. A1 A 210 Gr.C |
ST 35.8/I
ST 35.8/I ST 45.8/I 17 Mn 4 |
1.0305 1.0305 1.0405
1.0481 |
3602/1
3059/2 3602/1 3602/1 |
CFS 360
CFS/HFS 360 CFS/HFS 410 CFS/HFS 460 |
| Low Alloy Steel
Low Alloy Steel Low Alloy Steel Low Alloy Steel Low Alloy Steel |
A 209 T1
A 213 / A 199 T11/T12 A 213 / A 199 T22 A 213 / A 199 T5 A 213 / A 199 T9 |
16 Mo 5
13 CrMo 44 10 CrMo 910 12 CrMo 195 X12 CrMo 91 |
1.5423 1.7335 1.7380 1.7362
1.7386 |
3606
3604 3059 3604 3059/3604 |
245
621 622-440 625 629-470 |
| Stainless Steel
Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel |
A 213 / A 269 / A249 TP 304
A 213 / A 269 / A249 TP 304L A 213 / A 269 / A249 TP 321 A 213 / A 269 / A249 TP 316 A 213 / A 269 / A249 TP 316L A 213 / A 269 / A249 TP 347 A 213 / A 269 / A249 TP 316Tl A 789 / A 790 UNS S 31803 B 677 Alloy 904L |
X5 CrNi 189
X2 CrNi 189 X10 CrNiTi 189 X5 CrNiMo 1810 X2 CrNiMo 1810 X10 CrNiNb 189 X10 CrNiMoTi 1810 X2 CrNiMo 11225 X2 NiCrMoCu 25205 |
1.4301 1.4306 1.4541 1.4401 1.4404
1.4550 1.4571 1.4462 1.4539 |
970
970 970 970 970 970 970 ––– ––– |
304 S 15
304 S 12 321 S 12 315 S 16 316 S 12 347 S 17 320 S 17 |
| Nickel
Nickel |
B 161 UNS No 2200
B 161 UNS No 2201 |
Ni 99,2
Ni 99,2 |
2.4066
2.4068 |
3074
3074 |
NA 11
NA 12 |
| Nickel-Copper | B 163 N 04400 | NiCu30Fe | 2.4360 | 3074 | NA 13 |
| Nickel-Chrom-Iron
Nickel-Chrom-Iron Nickel-Chrom-Iron Nickel-Chrom-Iron |
B 163 6600
B 161 8825 B 468 08020 B 163 08800 |
NiCr15Fe
NiCr21Mo ––– X10 NiCrAlTi 3220 |
2.4816 2.4858
1.4876 |
3074
3074 ––– 3074 |
NA 14
NA 16 NA 15 |
| Copper Alloy
Copper Alloy Copper Alloy Copper Alloy Copper Alloy Copper Alloy Copper Alloy |
B 75 / B 111 UNS C12200
B 75 / B 111 UNS C14200 B 111 UNS C44300 B 111 UNS C68700 B 111 UNS C60800 B 111 UNS C70600 B 111 UNS C71500 |
Sf-Cu
CuAsp CuZn28Sn1 CuZn20Al2 CuAl5AS CuNi10Fe1Mn CuNi30Mn1Fe |
2.0090 2.1491 2.0470 2.0460 2.0918 2.0872
2.0882 |
2871
2871 2871 2871 ––– 2871 2871 |
C 106
C 107 CZ 111 CZ 110 CN 102 CN 107 |
| Aluminium Alloys
Aluminium Alloys Aluminium Alloys Aluminium Alloys |
Alloy 1050 / 1050A
Alloy 5754 Alloy 3003 Alloy 5083 |
Al 99,5
AlMg3 AlMnCu AlMg4,5Mn |
3.0255 3.3535 3.0517
3.3547 |
1050A (1B)
(N5) ––– 5083 (N8) |
|
| Titanium | B338 Gr. 2 | Ti2 | 3.7035 |
- Datasheet
- Drawing
- Certificates
Stainless Steel T Type Finned Tube Specifications
| Specification | Details |
|---|---|
| Outer Diameter | 8mm – 38mm |
| Wall Thickness | 0.5mm – 2.5mm |
| Fin Height | 0.3mm – 1.3mm |
| Fin Density | 16 – 26 FPI (Fins per Inch) |
| Length | Up to 12 meters (customized lengths available) |
| Tube Type | Seamless or Welded |
| Grades | 304, 304L, 316, 316L, Duplex SS |
Characteristics of T Type Finned Tube
T-shaped finned tubes have excellent heat transfer performance. In R113 medium, the boiling heat transfer coefficient of T-shaped finned tubes is 1.6 to 3.3 times higher than that of plain tubes. For traditional bare tube heat exchangers, the cold medium only bubbles and boils when the temperature of the hot medium is 12°C to 15°C higher than the boiling point or bubble point of the cold medium. In contrast, T-shaped finned tube heat exchangers only require a temperature difference of 2°C to 4°C for the cold medium to boil, and the bubbles are small, continuous, and rapid, offering unique advantages compared to bare tubes.
Production Features of Low Finned Tube-T Fin
Material Compatibility: The machine can process 304, 316L, and other stainless steels, as well as carbon steel, copper, titanium, etc.
Process Adaptability: Supports rolling and other processes to meet diverse needs.
Precision and Efficiency: Modern CNC equipment enables precise control of fin parameters, achieving large-scale continuous production.
T Type Finned Tube Quality Control
• Fin integrity and uniformity inspection
• Ultrasonic and eddy current testing
• Surface finish and dimensional precision checks
• Custom testing and third-party inspection available
T Type Finned Tube Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
