Welded Fin Tubes for Heat Exchanger

The fin tubes of Cangzhou Datang Steel Pipe Co., Ltd. include: spiral high-frequency welded finned tubes, stud tubes, toothed spiral high-frequency welded finned tubes, H-type finned tubes, double H-type finned tubes, etc.

Our welded fin tubes are suitable for power generation, petrochemical, refining industries and industrial processing equipment, and can be manufactured according to ASME “U” and “S” stamp certification.

1.Spiral high-frequency welded fin tubes

Spiral high-frequency welded fin tubes are special tubes for heat transfer applications in various industries.
1. Due to the fast welding speed and strong self-cooling effect,
the heat-affected zone is small and not easy to oxidize, so the structure and performance of the weld are very excellent;
2. Corrosion resistance, wear resistance, low contact thermal resistance, high stability, strong ash resistance;
3. Large heat exchange area;
4. Reduce the installation space of the required heat transfer surface;
5. High reliability at the same time;
6. Reduce the pressure drop on the tube side and reduce operating costs;
7. Improve the rigidity and seismic resistance of the steel pipe;
8. Reduce heat transfer and metal flow.
Our flexible production schedule allows for fast product turnaround, allowing you to minimize downtime when ordering replacement parts during emergency repairs or planned downtime, or to meet production schedules when ordering original equipment manufacturer (OEM) parts.

2.Studded Tubes

Studded tubes have studs welded on metal tubes. These studs are arranged in a specific pattern along the length of the tube. They are commonly used in boilers and refineries. They are used for reheating because they increase the heat transfer surface area.
Nailhead tubes are also called nail-finned tubes. In the petrochemical industry, nailhead tubes are widely used. Especially in the convection chamber of a tube furnace, in order to improve the heat transfer effect outside the tube, the heat transfer element usually adopts nailhead tubes.

3.Serrated Spiral High-frequency Welded Fin Tubes

Serrated Spiral High-frequency Welded Fin Tubes are specialized heat transfer elements designed for efficient heat exchange in various industrial applications.
Serrated Spiral High-frequency Welded Fin Tubes are widely used in heat transfer applications in various industries.
The serrated fin design increases the surface area of ​​the fins, thereby improving the heat transfer efficiency. High-frequency welding ensures a strong bond between the fins and the tube, giving it excellent durability and performance under high temperature and high pressure conditions.
Performance characteristics:
Easy and economical installation. The maximum length of the high-frequency welded spiral fin tube can reach 6 meters, which reduces the number of connection points, makes installation more economical and quick, and reduces the possibility of water leakage at the joints.
Easy to maintain. The high-frequency welded spiral fin tube does not require maintenance after installation.
High-efficiency high-frequency welded spiral fin tube, the fins and steel tubes are wrapped with full contact welding, and the heat dissipation area is more than 8 times that of the bare tube. The interior is smoother and the internal flow resistance is small.
Long service life, the fin tube combination has high mechanical strength, the tensile strength exceeds 200MPa, and the tube is hot-dip galvanized inside and outside.

4.H-type fin tube and double H-type fin tube

1. The fin is divided into two symmetrical halves.
The tube wall is pressed down from both sides and welded on the tube wall by resistance welding, leaving a certain gap in the middle;
2. Two round tubes can share a set of fins, called double-tube H-type fins, or a single-tube H-type fin can be placed in the middle;
3. The H-type fin tube heat exchanger is closely arranged, and the tube bundles are arranged in sequence;
4. The fins are parallel and independent to each other, not affected by the helix angle, and easy to clean.