KL Type Finned Tube for Heat Exchanger
KL type finned tube is a kind of knurled finned tube. Before winding the fins, knurl patterns on the base tube, or add a blade to the winder, knurl on the base tube, and use the back blade A finned tube made by winding, knurling and winding at the same time.
The KL Type Finned Tube relies on maximum surface contact between the fins and the tube, which is ensured by the tension of the fin strips helically forming around the pre-knurled tube, providing improved bonding and heat transfer. The maximum working temperature of KL Type Finned Tube can reach 250°C, and the maximum working pressure can reach 3.2MPa.
KL Type Finned Tube for Heat Exchanger Quick Details
Core tube material
1. Carbon steel: A179, A192, SA210 Gr A1/C, A106 Gr B
2. Stainless steel: TP304/304L, TP316/TP316L
3. Copper: UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10
4. Titanium: B338 Gr 2
Fin material
1. Aluminum (Alu.1100, Alu.1060)
2. Copper.
3. Steel
Common Specifications of KL Type Finned Tube for Heat Exchanger
Tube O.D. | Fin Height | Fin Thickness | Fins per Pitch |
5/8 | 3/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
3/4 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
1 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
1 1/4 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
1 1/2 | 5/8,1/2 | .015/.016/ .020 | 6, 7, 8, 9, 10, 11, 12 |
Manufacturing Process
KL type finned tube is a kind of knurled finned tube. Before winding the fins, knurl patterns on the base tube, or add a blade to the winder, knurl on the base tube, and use the back blade A finned tube made by winding, knurling and winding at the same time.
KL Finned Tube is combined with two different materials
Core tube material: carbon steel, low alloy steel, stainless steel, brass, copper, copper-nickel alloy, aluminum bronze, nickel alloy.
Core Tube Material | |
Carbon Steel Tube | A179, A192, SA210 Gr A1/C, A106 Gr B, A333 Gr3 Gr6 Gr8, A334 Gr3 Gr6 Gr8, 09CrCuSb, DIN 17175 St35.8 St45.8, EN 10216 P195 P235 P265, GB/T3087 Gr10 Gr20, GB/T5310 20G 20MnG, |
Alloy Steel | A209 T1 T1a,A213 T2 T5 T9 T11 T12 T22 T91,A335 P2 P5 P9 P11 P12 P22 P91,EN 10216-2 13CrMo4-5 10CrMo9-10 15NiCuMoNb5-6-4 |
Stainless Steel | TP304/304L, TP316/TP316L TP310/310S TP347/TP347H |
Copper | UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10 |
Titanium | B338 Gr 2 |
Quality Control for KL Type Finned Tube for Heat Exchanger
Inspection and Tests Performed
1. Chemical Composition inspection.
2. Mechanical Properties Test(Tensile Strength, Yield Strength, Elongation, Flaring, Flattening, Hardness, Impact Test).
3. Surface and Dimension Test.
4. No-destructive Test.
5. Hydrostatic Test.
Features of KL Type Finned Tube for Heat Exchanger
1. High heat transfer performance and small contact thermal resistance.
2. The contact area between the fin and the tube is large, and the fit is tight and reliable.
3. Good resistance to atmospheric corrosion and stable long-term use
Application of KL Type Finned Tube for Heat Exchanger
KL Type Finned Tube is usually used in condensers and heat exchangers with a maximum operating temperature of 250°C and a maximum operating pressure of 3.2MPa.
