SHANDONG DELIN

Laser welding
Laser welding
Laser welding
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  • Laser welding
  • Laser welding
  • Laser welding

Product Details

Product Introduction:

Our company manufactures finned tubes—also known as finned heat exchange tubes—which are specialized heat transfer components designed to enhance heat transfer. Their core principle involves attaching fins to the surface of a base tube to increase the heat transfer area, thereby significantly improving thermal efficiency. These tubes are widely used in various industrial and residential heat exchange applications.

Product features:

High-precision welded finned tube : The laser energy is highly concentrated, resulting in narrow, deep welds with a small heat-affected zone and high bonding strength between the base tube and the fins.
Adaptability of Complex Structures : Capable of welding shaped fins and ultra-thin fins (≥0.1 mm).
Smooth surface: No weld slag residue, low fluid resistance, suitable for clean or high-purity media.
Resistant to extreme operating conditions: Operating temperature range: −200°C to 800°C; pressure rating up to 30 MPa. Materials.

Product material:

Stainless steel finned tubes (e.g., 304, 316L, 310S) : High-temperature and corrosion-resistant, suitable for harsh environments such as the chemical and nuclear power industries.
Carbon steel/Low-alloy steel (e.g., 20#, Q345): Low cost, suitable for general industrial heat exchange equipment.
Nickel-based alloys (such as Inconel 600 and 625): Resistant to extreme high temperatures and oxidation, used in aerospace and nuclear reactors.
Titanium/Titanium Alloy: Lightweight and corrosion-resistant, suitable for marine, medical, and chemical applications.
Copper/Copper Alloys: High thermal conductivity, used in precision instruments or cryogenic refrigeration systems.

It can be processed into various shapes:
Spiral finned tubes, longitudinal finned tubes, H‑type ribbed tubes, and vortex‑finned tubes, among others. Notably, the vortex‑finned tube is manufactured using an integral forming process; its fin structure provides a self‑cleaning effect, effectively addressing ash buildup in industrial boilers and improving boiler thermal efficiency by approximately 6%.
Suitable for various materials:
Steel finned tubes, aluminum finned tubes, copper finned tubes, and composite finned tubes (bimetallic rolled‑fin tubes), among others. Notably, bimetallic composite finned tubes combine the pressure resistance of steel with the thermal conductivity of aluminum, resulting in extremely low contact thermal resistance.


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