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High Frequency Welding Fin Tube ASTM A106 GR.B For Radiant Coil
A carbon steel finned tube is a type of tube that increases the heat transfer area by adding fins to the outer surface of a carbon steel tube. This design significantly enhances heat transfer efficiency.
1. Material Specification
Chemical position | |||||||
C | Si | Mn | P | S | Cr | Ni | Mo |
0.25% | 0.55% | 1.15% | 0.03% | 0.03% | 0.08% | 0.03% | 0.25% |
Mechanical properties | ||
Mechanical performance indicators | minimum | unit |
Tensile Strength | 415 | Mpa |
Yield Strength | 240 | Mpa |
Hardness | ≤190 | HB |
2. High-Frequency Welding (HFW)
Welding Process: The principle of high-frequency induction heating is used to bring the contact surface between the base tube and the fins to a molten state, and then welding is achieved through pressure. Specifically, the skin effect produced by the high-frequency current passing through the pipe and the fins causes the current to concentrate on the surface of the conductor, rapidly heating the metal to a molten state. During this process, external pressure is applied to cause the molten metal to fuse and bond closely, forming a seamless connection.
3. Application Fields