ASTM A106 Gr.B Tube With Cu-T2 Fin with Embedded Fin Tube G-Type
Inlay fin tubes, also known as G-fin tubes, are manufactured by mechanically wrapping fin material around a base tube. Their key feature is that the fin legs are embedded into the base tube surface under tension, forming a tight mechanical and metallurgical bond without the need for any filler material.
The combination of a sturdy carbon steel base tube and highly thermally conductive copper fins provides a unique balance of strength, corrosion resistance, and excellent heat transfer performance.
ASTM A106 Gr. B Seamless Carbon Steel Tube Chemical Composition(%):
| Standard | Grade | Chemical Components (%) |
| C | Si | Mn | P | S | Mo | Cr | V |
| ASTM A106 | A | ≤0.25 | ≥01.0 | 0.27-0.93 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.40 | ≤0.08 |
| B | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.40 | ≤0.08 |
| C | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.40 | ≤0.08 |
ASTM A106 Gr. B Seamless Carbon Steel Tube Mechanical Tests Required
| Standard | Grade | Mechanical properties |
Tensile
Strength (Mpa) | Yield
Strength (Mpa) | Elongation
(%) |
| ASTM A106 | A | ≥330 | ≥205 | ≥35 |
| B | ≥415 | ≥240 | ≥30 |
| C | ≥485 | ≥275 | ≥30 |
Key Features:
High-Pressure/High-Temperature Resistance: Designed for high-pressure systems, they can withstand temperatures typical of boiler, superheater, and heat exchanger applications.
Strength and Durability: The seamless construction provides exceptional mechanical strength and integrity.
Weldability: They can be easily welded to carbon steel piping, headers, and tubesheets.
Fin Material: Copper UNS C11000 (Cu-T2)
Standard: UNS C11000 (also known as C110 or electrolytic tough pitch copper - ETP copper) is a standard commercial copper.
Applications:
This specialized tubing is ideal for applications where high thermal performance and mechanical durability are critical:
Heat Recovery Steam Generators (HRSGs): Used in the economizer and low-pressure section.
Air-Cooled Steam Condensers: Used in power plants and large industrial processes.
Finned Tube Boilers: Used for increased efficiency and compact size.
Oil and Air Coolers: Used in industrial processes where air is used to cool process fluids.
HVAC & Refrigeration Systems: Used in large industrial heating coils or specialized heat recovery units.
