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ADD:Shanghai International Metal Central, Baoshan,Shanghai, The P. R. of China. Post. 201900

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Lord Fin Tube-Hot dipped galvanized elliptical fin tubes
The hot dip galvanized elliptical fin tube with its favorable flow characteristics, which has been proving its marketability for decades and will continue to play an outstanding role on the heat exchanger market in the future.
Wherever heat transfer is needed in industrial production processes, the elliptical fin tube has demonstrated its high efficiency in areas of application that include the following:
• Refineries
• Petrochemical industry
• Steel mills and the rest of the steel industry
• Natural-gas facilities
• Power plants
• Paper industry
• Textile industry
and others

Hot dipped galvanized oval (elliptical) fin tubes with rectangular Fins ( fin tubes ) is by setting up rectangular or square-shaped fins over Oval tube.

This fin tubes (pipes) maximizes the performance of Heat Exchangers and minimizes the loss of heat transfer and pressure.
fin pitch mm                              2.3 2.5 2.8 3.2
fin quantit pc/m                      416-455 390-410 345-370 302-322
heat transfer area (square meter/m) 1.15 1.05 0.95 0.85
weight (Kg/m)                              2.0/2.5 3.0/3.3 2.9/3.1 2.7/3.0 2.5/2.8
tube material                              carbon steel tubes (seamless or welded pipes)
Bare tube (mm)                      Long 36-0.2 Short 14-0.2
Fin material                              SPCC
Fin size (mm)                              55*26*0.25
Zin layer (mm)                     0.05-0.07
Turbulator quantity                     4pcs,10 pcs or 26 pcs
length(m)                             15000mm

Fin Chip inserted Finned Tube
The fin chip inserted finned tubes made by a batch of punched single fin, and then used the manual or mechanical method, according to a certain pitch (fin pitch), by a surplus will be set on the outer surface of the base tube. It is the earliest method of processing the fin tube. Due to the simplicity of this kind of fin tubes, the technical requirements are not high, the low cost of the equipment, and easy maintenance, so, there are still many factories in the use of it. This process is a kind of labor intensive process plan, suitable for general small factory or township enterprises capital and technical conditions.

The fin chip inserted finned tubes is the use of tools, relying on the strength of manual inserte fin by fin. This method because of the pressure of the fin is limited, so the amount of interference is small, easy to produce the phenomenon of loose fin.

The mechanical set of fins is carried out on the fin set. Because the fin press is on the mechanical impact or liquid pressure, the pressure is large, so, can be used in a large amount of interference. The bond strength between fin and tube is high, and is not easy to loose. Machine driven by a high productivity, but the noise is big, the safety is poor, the workers working condition is poor. Although the hydraulic transmission of the above problems, but the higher the cost of equipment, the use of maintenance personnel of the higher technical requirements, its productivity is low.

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