The Integral Finned Tubes are produced by rolling the fins in a spiral from the metal of a plain tube; thus, the fin is integral with the tube itself and not made from a separate strip which is welded later. The operation of rolling the fin decreases the thickness of the tube to form the fin, thereby doubling the surface area of the tube by two and a half times compared to a plain tube, but leaving the unrolled part of the tube at its ends intact. Integral Finned Tubes are supplied as Low Fin Tubes, with a lower fin height and higher fin density for compact shell and tube exchangers, and as Medium High Fin Tubes, with a taller fin for applications needing greater surface area per tube. Amardeep Steel Centre manufactures Integral Finned Tubes in copper, copper nickel, admiralty brass, carbon steel and stainless steel to suit shell and tube heat exchanger designs across multiple industries.
Technical Data
Specifications of Integral Finned Tube
| Parameter | Specification Details |
|---|---|
|
Product Type |
Integral Low Fin Tubes, Integral Medium High Fin Tubes |
|
Base Tube Outside Diameter (OD) |
9.52 mm to 38.10 mm (3/8" to 1-1/2") |
|
Base Tube Wall Thickness |
0.55 mm to 2.11 mm and above (depending on material grade) |
|
Fin Height |
Low Fin: 0.8 mm – 1.6 mm | Medium High Fin: Up to 4.0 mm |
|
Fin Density |
11 to 30 Fins Per Inch (FPI) |
|
Tube Length |
Standard lengths of 3, 6, 12, 18, and 20 metres (custom lengths available) |
|
Fin Formation Method |
Cold rolling / rotary extrusion directly from base tube wall |
|
Base Tube Materials |
Copper, Copper Nickel, Admiralty Brass, Aluminium Brass, Carbon Steel, Stainless Steel |
|
Applicable Standards |
ASTM A179, ASTM A213, ASTM B111, SB 111, ASME SA179, ASME SA213 |
|
Testing Standards |
Pneumatic air-under-water test, Hydrostatic test, Dimensional checking, MTC EN 10204 3.1 |
Chemical Compositions of Integral Finned Tube
| Material Grade | UNS / Spec | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) | Cu (%) | Other (%) |
|---|---|---|---|---|---|---|---|---|---|---|
|
Copper |
C12200 |
— |
— |
0.015–0.040 |
— |
— |
— |
— |
99.90 min |
— |
|
Copper Nickel 90/10 |
C70600 |
— |
1.0 max |
— |
— |
— |
— |
9.0–11.0 |
Rem. |
Fe: 1.0–1.8 |
|
Copper Nickel 70/30 |
C71500 |
— |
1.0 max |
— |
— |
— |
— |
29.0–33.0 |
Rem. |
Fe: 0.4–1.0 |
|
Admiralty Brass |
C44300 |
— |
— |
— |
— |
— |
— |
— |
70.0–73.0 |
Sn: 0.9–1.2, As: 0.02–0.06, Zn: Rem. |
|
Aluminium Brass |
C68700 |
— |
— |
— |
— |
— |
— |
— |
76.0–79.0 |
Al: 1.8–2.5, As: 0.02–0.06, Zn: Rem. |
|
Carbon Steel |
ASTM A179 |
0.06–0.18 |
0.27–0.63 |
0.035 max |
0.035 max |
0.25 max |
— |
— |
— |
— |
|
Stainless Steel 304 |
TP304 |
0.08 max |
2.00 max |
0.045 max |
0.030 max |
0.75 max |
18.0–20.0 |
8.0–11.0 |
— |
— |
|
Stainless Steel 304L |
TP304L |
0.03 max |
2.00 max |
0.045 max |
0.030 max |
0.75 max |
18.0–20.0 |
8.0–12.0 |
— |
— |
|
Stainless Steel 316 |
TP316 |
0.08 max |
2.00 max |
0.045 max |
0.030 max |
0.75 max |
16.0–18.0 |
10.0–14.0 |
— |
Mo: 2.0–3.0 |
|
Stainless Steel 316L |
TP316L |
0.03 max |
2.00 max |
0.045 max |
0.030 max |
0.75 max |
16.0–18.0 |
10.0–14.0 |
— |
Mo: 2.0–3.0 |
Mechanical Properties of Integral Finned Tube
| Material Grade | Tensile Strength (MPa) min | Yield Strength (MPa) min | Elongation (%) min | Hardness (Max) |
|---|---|---|---|---|
|
Copper UNS C12200 |
205 |
69 |
40 |
60 HRF |
|
Cu-Ni 90/10 C70600 |
275 |
105 |
30 |
75 HRB |
|
Cu-Ni 70/30 C71500 |
360 |
125 |
30 |
80 HRB |
|
Admiralty Brass C44300 |
310 |
105 |
35 |
75 HRB |
|
Aluminium Brass C68700 |
340 |
125 |
35 |
78 HRB |
|
Carbon Steel A179 |
325 |
180 |
35 |
72 HRB |
|
Stainless Steel TP304 |
515 |
205 |
35 |
92 HRB |
|
Stainless Steel TP304L |
485 |
170 |
35 |
90 HRB |
|
Stainless Steel TP316 |
515 |
205 |
35 |
95 HRB |
|
Stainless Steel TP316L |
485 |
170 |
35 |
90 HRB |
Equivalent Grades of Integral Finned Tube
| ASTM / ASME Grade | EN Standard | BS Standard | DIN Standard | JIS Standard |
|---|---|---|---|---|
|
Copper UNS C12200 |
Cu-DHP (CW024A) |
C106 |
SF-Cu (2.0090) |
C1220 |
|
Cu-Ni 90/10 C70600 |
CuNi10Fe1Mn (CW352H) |
CN102 |
CuNi10Fe1Mn (2.0872) |
C7060 |
|
Cu-Ni 70/30 C71500 |
CuNi30Mn1Fe (CW354H) |
CN107 |
CuNi30Mn1Fe (2.0882) |
C7150 |
|
Admiralty Brass C44300 |
CuZn28Sn1As (CW706R) |
CZ111 |
CuZn28Sn1 (2.0470) |
C4430 |
|
Aluminium Brass C68700 |
CuZn20Al2As (CW702R) |
CZ110 |
CuZn20Al2 (2.0460) |
C6870 |
|
Carbon Steel A179 |
P235GH (1.0345) |
BS 3602 Pt 1 |
St 35.8 (1.0305) |
STB 340 / ST35 |
|
Stainless Steel TP304 |
X5CrNi18-10 (1.4301) |
304S31 |
X5CrNi18-10 (1.4301) |
SUS 304 TB |
|
Stainless Steel TP304L |
X2CrNi19-11 (1.4306) |
304S11 |
X2CrNi19-11 (1.4306) |
SUS 304L TB |
|
Stainless Steel TP316 |
X5CrNiMo17-12-2 (1.4401) |
316S31 |
X5CrNiMo17-12-2 (1.4401) |
SUS 316 TB |
|
Stainless Steel TP316L |
X2CrNiMo17-12-2 (1.4404) |
316S11 |
X2CrNiMo17-12-2 (1.4404) |
SUS 316L TB |
Dimensions Chart of Integral Finned Tube
| Fin Profile Variant | Base Tube OD (mm) | Wall Thickness (mm) | Fin Height (mm) | Fin Density (FPI) | Approx. Finned OD (mm) |
|---|---|---|---|---|---|
|
Low Fin |
9.52 |
0.81 – 1.24 |
0.80 |
19 – 28 |
9.52 |
|
Low Fin |
12.70 |
0.89 – 1.65 |
1.20 |
19 – 26 |
12.70 |
|
Low Fin |
15.88 |
1.24 – 2.11 |
1.40 |
19 – 26 |
15.88 |
|
Low Fin |
19.05 |
1.24 – 2.11 |
1.50 |
19 – 26 |
19.05 |
|
Low Fin |
25.40 |
1.65 – 2.77 |
1.60 |
16 – 26 |
25.40 |
|
Low Fin |
38.10 |
2.11 – 3.40 |
1.60 |
16 – 19 |
38.10 |
|
Medium High Fin |
12.70 |
0.89 – 1.65 |
2.50 |
11 – 16 |
17.70 |
|
Medium High Fin |
15.88 |
1.24 – 2.11 |
3.00 |
11 – 16 |
21.88 |
|
Medium High Fin |
19.05 |
1.24 – 2.11 |
3.50 |
11 – 14 |
26.05 |
|
Medium High Fin |
25.40 |
1.65 – 2.77 |
4.00 |
11 – 14 |
33.40 |
Working Pressure and Operating Temperature of Integral Finned Tube
| Base Tube Material | Max. Operating Temperature (°C) | Allowable Working Pressure Range (Bar)* |
|---|---|---|
|
Copper UNS C12200 |
200°C |
Up to 100 Bar |
|
Copper Nickel 90/10 |
300°C |
Up to 150 Bar |
|
Copper Nickel 70/30 |
350°C |
Up to 180 Bar |
|
Admiralty Brass C44300 |
250°C |
Up to 120 Bar |
|
Carbon Steel ASTM A179 |
425°C |
Up to 250 Bar |
|
Stainless Steel TP304 / TP304L |
600°C |
Up to 320 Bar |
|
Stainless Steel TP316 / TP316L |
650°C |
Up to 350 Bar |
Integral Finned Tube manufacturer in India. Rolled low, medium and high fin tubes in copper, carbon steel and stainless steel. Dimension chart and MTC available.
Request a QuoteApplications and Industrial Uses of Integral Finned Tube
- Refrigeration Evaporators
- Air Conditioning Condensers
- Gas Coolers
- Chiller Heat Exchangers
- Dehumidification Equipment
- Heat Recovery Ventilation Systems
- Process Gas Coolers
- Dryers and Industrial Heating Equipment
Frequently Asked Questions
What is an Integral Finned Tube?
An Integral Finned Tube is a heat transfer tube with fins formed directly from the tube wall, creating a strong and continuous fin-to-tube structure.
How are Integral Finned Tubes manufactured?
They are manufactured by mechanically forming or rolling the outer wall of a plain tube to produce integral fins along its length.
What is the difference between Integral Finned Tubes and Low Finned Tubes?
Integral Finned Tubes have fins formed directly from the tube wall, while Low Finned Tubes generally have short, closely spaced fins designed to increase the external heat transfer area.
What are the advantages of Integral Finned Tubes?
They provide increased heat transfer area, strong fin-to-tube bonding, good thermal performance, and compact heat exchanger design.
How do Integral Finned Tubes improve heat transfer?
The fins increase the external surface area available for heat transfer, improving thermal performance compared with plain tubes.
Are Integral Finned Tubes suitable for heat exchangers?
Yes, they are widely used in heat exchangers where increased surface area and efficient heat transfer are required.
Can Integral Finned Tubes be used in condensers and evaporators?
Yes, they can be used in condensers, evaporators, chillers, and other heat transfer equipment, depending on the design and operating conditions.
