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L Type Finned Tube for Heat Exchanger
Would L-type finned tube can increase the surface area or internal standard area of its heat exchange tube, which can also achieve the goal of improving the heat transfer efficiency of the finned tube. Would L-type finned tube is a wear-resistant, new and efficient heat exchange material. It is an efficient and energy-saving heat exchange component during use. The equipment mainly uses high-frequency power as the heat source to effectively heat the steel pipe and strip simultaneously, which will melt and weld them together into a whole. Would L-type finned tube has the advantages of high heat transfer efficiency and large heat dissipation area, long service life of the entire product, and wide temperature range adaptation.
The installation of finned tubes is simple and economical, reducing the number of connection points, making equipment installation more economical and efficient. To some extent, it also reduces the probability of water leakage at the connection points. Product maintenance is simple, and after installation is completed, there is basically no need for further maintenance. The use efficiency of finned tubes is high. During the production process, the steel pipe and fins are effectively wound and fully welded, and the heat dissipation area is more than 8 times that of bare tubes. The interior of the product will be smoother and the resistance of the internal water flow is relatively small.
Features of A179 Finned Tube:
Chemical Compositions of A179 Tubes
| Chemical Components (%) | |||||||
| C | Si | Mn | P | S | Mo | Cr | V |
| 0.06-0.18 | / | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / |
Mechanical Properties of A179 Tubes
| Mechanical Properties | |||
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness (HRB) |
| ≥325 | ≥180 | ≥35 | ≤72 |
| Bare Tube Materials | |
| Carbon Steel Tubes | 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 Tubes | 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 Tubes | TP304/304L, TP316/TP316L TP310/310S TP347/TP347H |
| Copper Tubes | UNS12200/UNS14200/UNS70600, CuNi70/30, CuNi 90/10 |
| Titanium Tubes | Gr. 2 |
| Fin materials | |
| Aluminum (Alu.1100, Alu.1060), Copper, Steel | |
Manufacturing Process
Fin strips(usually aluminum and copper) are folded into an L shape
and wound under tension on the surface of the base tube. The feet
of the fins are connected together and cover the surface of the
fins.
ASTM A179 Finned Tube is combined with two different materials
Bare tube material: A179
Fin material: aluminum, copper, steel
Application:
Petrochemical
economizer
waste heat recovery
greenhouse
power plant boiler
wood drying
