G Fin Tube Manufacture Process
4 week ago
Overview
Specification
| Standard | ASTM A179 |
| Grades | SA179 |
| Tube Type | Seamless Low Carbon Steel Tube |
| Fin Type | G-Type (Embedded Fin) |
| Fin Material | Carbon Steel. Aluminum (AA1060 / AA1100), Copper also available |
| Tube Outer Diameter | 19 mm – 63.5 mm |
| Fin Height | 6 mm – 16.5 mm |
| Fin Thickness | 0.3 mm – 2 mm |
| Fin Pitch | 8-12 FPI |
| Length | Up to 12 meters |
Key Features
- Excellent heat transfer efficiency: Embedded fins ensure excellent thermal contact between the fins and the base tube.
- Securely bonded fins: Fins are mechanically locked into machined grooves, preventing loosening during thermal cycling.
- High-temperature resistance: Suitable for continuous operation up to 300°C.
- Corrosion and oxidation resistance: Can be treated or coated to extend service life in industrial environments.
- Economical and efficient: Mild steel offers excellent thermal properties at a lower material cost.
- Reliable performance: No weld heat damage, stable base tube performance, suitable for high-temperature, high-pressure, and vibration-prone applications.
Chemical Composition
| Element | C | Mn | P (max) | S (max) |
|---|---|---|---|---|
| Content (%) | ≤ 0.06 | 0.27–0.63 | 0.035 | 0.035 |
Mechanical Properties
| Property | Requirement |
|---|---|
| Tensile Strength, min (MPa) | 325 |
| Yield Strength, min (MPa) | 180 |
| Elongation (in 50 mm), min % | 35 |
| Hardness (HRB), max | 72 |
| Flattening / Flaring Test | Required |
Application
- Air-cooled heat exchangers
- Condensers and economizers
- Boilers and process heaters
- Petrochemical and refinery heat recovery systems
- Power generation cooling systems
- Gas cooling and drying units
Possible Alternative Grades
- Grade A1: Medium carbon steel for high-temperature service.
- Grade B: Carbon steel for high-pressure applications.
- T11 / T22: Alloy steel with enhanced oxidation resistance.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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Main Product:
Seamless Steel Tubes ,
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