ASTM A179 Carbon Steel Embedded G Fin Tube with Mechanical Cold-Forming Process for Boiler Systems Economizers
Price:
Negotiable
MOQ:
Depend
Delivery Time:
35-45 days
Brand:
YUHONG
Product Description
ASTM A179 Carbon Steel Embedded G Fin Tube with Mechanical Cold-Forming Process for Boiler Systems Economizers
Embedded G fin tubes are manufactured via a mechanical cold-forming process that creates a permanent, high-strength bond between the fin strip and base tube—no welding or brazing is used. The spiral "G-groove" is precision-machined onto the outer surface of the base tube. A continuous metal fin is tension-wound into the groove, and then the sidewalls of the groove are cold-rolled/backfilled to firmly lock the fin root. This mechanical interlocking ensures excellent thermal conductivity and resistance to vibration and thermal cycling.
ASTM A179 cold-drawn low-carbon seamless tube is the most popular and cost-effective base tube choice for embedded G finned tubes (especially steel-aluminum embedded G finned tubes, most widely used; cost-effective; ≤260°C). ASTM A179 specification covers minimum-wall-thickness tubular heat exchangers, condensers, and similar heat transfer apparatus. Its core advantages lie in four key aspects: processing adaptation, heat transfer, structure, and cost.
Chemical Composition (%) Maximum
| Grade | C | Mn | P | S |
|---|---|---|---|---|
| A179 | 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 |
Mechanical Properties
| Grade | Tensile Strength min | Yield Strength min | Elongation in 2" or 50mm min |
|---|---|---|---|
| A179 | 47ksi (325 MPa) | 26ksi (180 MPa) | 35% |
Product Definition & Advantages
The mechanical forming of embedded G finned tubes creates a permanent, highly conductive bond that requires no welding and provides excellent vibration and thermal cycling resistance for medium- to high-temperature heat transfer applications.
Key Advantages:
- Excellent bond strength: mechanical interlocking prevents fins from detaching under vibration and thermal cycling
- Excellent thermal conductivity: tight, zero-gap contact minimizes thermal resistance
- High temperature resistance: suitable for medium to high temperature applications
- Versatility: suitable for most metals; compatible with high-pressure systems
Application Industries
- Power & Energy
- Petrochemical & Natural Gas
- Metallurgy & Building Materials
- HVAC & Refrigeration
- Other Industries & Environmental Protection
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Company
YUHONG HOLDING GROUP CO., LTD
Location
20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
Contact Person
Sales Dept.