HFW Fin Tube ASME SA213 T12 Agricultural Production Sheds Heat
Transfer Equipment
What is HFW Fin Tube?
High-frequency welded finned tube is a common type of finned tube,
which adopts high-frequency induction heating technology to weld
the metal fins to the metal tube. This process has the advantages
of high efficiency, high quality and high automation, so it is
widely used in the industrial field.
The process of making high-frequency welded finned tubes generally
includes the following steps:
Making fins: Shear the metal sheet into corresponding shapes of
fins, and then form them by pressing, stretching, rolling and other
processes.
Making the tube: Bend the sheet metal into the shape of a tube,
then weld or buckle the orifice into a complete tube.
Installation of fins: The fabricated fins are set onto the tube,
and then the fins are welded to the tube by high-frequency
induction heating technology. During this process, the friction
generated by the contact between the fins and the tube surface will
heat up the fin surface. The high frequency induction heating
technology utilizes the heat generated by the eddy currents on the
surface of the fins to melt and fuse them with the tube surface.
Chemical Composition OF ASME SA213 T12
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
| 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
Mechanical Propertie OF ASME SA213 T12
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 415 min | 205 min | 30 min | 179 max |
Equivalent Of ASME SA213 T12
| Trade Name | Grade | UNS | Heater Tubes |
| 2 1/4 Chrome | T22 | K21590 | A213 |
Heat Treatment OF ASME SA213 T12
| Grade | UNS Number | Heat Treat Type | Subcritical Annealing or Tempering Temperature, Min or range °F [
°C ] |
| T12 | K11562 | full or isothermal anneal normalize and temper subcritical anneal | 1200 to 1350 |
| [650 to 730] |
Advantages of HFW Fin Tube
High welding quality: High-frequency induction heating technology
can make the welding part of fins and tubes reach high temperature,
which makes the metal substance between fins and tubes mix evenly
and the welding quality is high.
Good product molding: The finned tube produced by high frequency
induction heating technology has beautiful appearance, good
molding, and high fit between fins and tubes.
High production efficiency: the finned tube produced by
high-frequency induction heating technology has high production
efficiency, and the production line is highly automated, which can
realize rapid and continuous production.
Scope of inspection
Mill test
Penetration Test
Size Inspection
Application:
Petrochemical
Chemical
Heat transfer
oil
Gas
Heat exchanger
Condenser
