Place of Origin:
China
Brand Name:
YUHONG
Certification:
ISO 9001-2015,etc.
Model Number:
Embedded G Type Finned Tubes
What is the G embedded tubes? How did this G process come into being and what about advantages of this type?
*G embedded tubes are finned tubes where fins are embedded and locked into helical grooves on the base tube (carbon steel, stainless steel, copper alloys) via a mechanical forming process.
*The base pipe adopts ASTM A106 Gr.B carbon steel, which features excellent high-temperature stability and pressure-bearing capacity, suitable for the high-pressure, medium-temperature working conditions of air cooler tube bundles. The fins are made of Cu T2 (C11000 ETP copper), known for its superior thermal conductivity, ensuring efficient heat transfer between the tube side medium and air in air coolers.
Core Characteristics of A106 Gr.B Seamless Steel Pipes
*Chemical Composition
| C% | Mn% | P% | S% | Si% | Cr% | Cu% | Mo% | Ni% | V% |
| 0.30 | 0.29-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 | 0.15 | 0.40 | 0.08 |
*ASTM A106 a standard for seamless carbon steel pipe for high-temperature service,emphasizing structural stability and process adaptability under high temperature and high pressure. It is mainly applied in fluid/steam transportation, heat exchangers and pipeline systems in industrial fields such as petroleum, chemical engineering, power and natural gas transportation.
*Mechanical Properties
| Tensile Strength, min | Yield Strength, min | Elongation in 2" or 50mm, min |
| 60ksi (415 MPa) | 35ksi (240 MPa) | 30% |
*ASTM A106 a ideal choice balanced strength and plasticity for dual adaptability in construction and service.Excellent high-temperature stability for high-temperature working conditions.ASTM A106 has superior weldability and heat treatability.
Core Characteristics of Cu T2 (M) Fins
*Chemical Composition (According GB/T 5231-2022)
| Cu% | Fe% | Bi% | Sb% | As% | Sn% | Ni% | Zn% | P% | Pb% | S% |
| 99.95 | 0.003 | 0.0008 | 0.0005 | 0.0003 | / | / | / | / | 0.00045 | 0.001 |
*After full annealing treatment, it attains optimal plasticity and toughness, with a total content of Cu+Ag of not less than 99.90%. As the most widely used high-purity pure copper in industrial applications, its core advantages lie in three key aspects: thermal/electrical conductivity, plastic workability and corrosion resistance. Moreover, its soft temper characteristics further make it well-suited for industrial processes such as precision forming and welding.
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