YUHONG HOLDING GROUP CO., LTD
| Payment Terms | TT, LC |
| Supply Ability | According to Clients' requirements |
| Delivery Time | 45-60 Days (Depend on Purchased Quantities) |
| Packaging Details | Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps |
| Product Name | Gost 550-2020 Steel 20 Embedded Finned Tube with Al1060 Fins |
| Base Tube Specification&Material | Gost 550-2020 Steel 20 |
| Fin material | Aluminum 1060 |
| Fin Height | ＜19 mm |
| Fin Thickness | 0.2~0.5 mm |
| Base Tube OD | 15.88~76.2 mm |
| Fin Pitch | 2.1~5mm |
| Application | Petrochemical Air Coolers; Waste Heat Recovery; Natural Gas Compressor Stations... |
| Brand Name | Yuhong |
| Model Number | Embedded/ G Finned Tube |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | TT, LC | Supply Ability | According to Clients' requirements |
| Delivery Time | 45-60 Days (Depend on Purchased Quantities) | Packaging Details | Ply-wooden Cases with Steel Frames and Pipe's both ends with plastic caps |
| Product Name | Gost 550-2020 Steel 20 Embedded Finned Tube with Al1060 Fins | Base Tube Specification&Material | Gost 550-2020 Steel 20 |
| Fin material | Aluminum 1060 | Fin Height | ＜19 mm |
| Fin Thickness | 0.2~0.5 mm | Base Tube OD | 15.88~76.2 mm |
| Fin Pitch | 2.1~5mm | Application | Petrochemical Air Coolers; Waste Heat Recovery; Natural Gas Compressor Stations... |
| Brand Name | Yuhong | Model Number | Embedded/ G Finned Tube |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | China |
| High Light | GOST 550-2020 steel embedded finned tube ，Al1060 fins air cooler tube ，embedded G fin tube with warranty | ||
Gost 550-2020 Steel 20 Embedded Finned Tube with Al1060 Fins For Air Coolers
1. Product Definition & Structure
The GOST 550-2020 Steel 20 Embedded Finned Tube with AL1060 Fins is a mechanically bonded finned tube used for gas-to-liquid or gas-to-gas heat exchange, where the outside medium is air or flue gas and the inside medium is a process fluid.
Structure:
Base tube: GOST 550-2020 compliant, Steel 20 carbon steel seamless tube
Fins: AL1060 commercially pure aluminum strip
Bonding method: Embedded (G-Fin), mechanical lock without welding or metallurgical bonding
2. Applicable Standards & Material Specifications
2.1 Base Tube Standard: GOST 550-2020
This Russian standard specifies seamless steel tubes for petroleum refining and petrochemical industries, covering chemical composition, mechanical properties, NDT, and dimensional tolerances.
2.2 Base Tube Material: Steel 20 Chemical Composition
| Parameter | Value |
| Carbon (C) | 0.17% – 0.24% |
| Manganese (Mn) | 0.35% – 0.65% |
| Silicon (Si) | 0.17% – 0.37% |
| Phosphorus (P) | ≤ 0.030% |
| Sulfur (S) | ≤ 0.020% |
| Tensile strength (Rm) | ≥ 410 MPa |
| Yield strength (ReL) | ≥ 245 MPa |
| Elongation | ≥ 20% |
2.3 Steel 20 Mechanical Properties at Room Temperature (Minimum / Typical)
| Property | Value | Remarks |
| Tensile strength R_mRm | ≥ 410 MPa | Minimum; actual typically 430 – 550 MPa |
| Yield strength R_{eL}ReL | ≥ 245 MPa | Lower yield, for wall thickness ≤ 16 mm |
| Elongation AA | ≥ 20% | L0 = 5d0 |
| Reduction of area ZZ | ≥ 45% | Ductility reserve |
| Brinell hardness (HB) | 130 – 170 | As delivered (hot rolled or normalized) |
Based on minimum requirements of GOST 550-2020 for seamless Steel 20 tubes.
2.4 Fin Material: AL1060
| Parameter | Value |
| Aluminum content | ≥ 99.6% |
| Thermal conductivity | ≈ 234 W/(m·K) |
| Tensile strength | 60 – 95 MPa |
| Yield strength | ≥ 15 MPa |
| Melting point | ≈ 657°C |
| Temper | O (annealed) |
3. Performance Characteristics (Parameter Based)
3.1 Heat Transfer
Medium-to-high efficiency among mechanical finned tubes, between L-type and HF-welded.
In typical air cooler duty, air-side thermal resistance accounts for 60% – 80% of total.
Aluminum’s high conductivity (234 W/(m·K)) is partially offset by steel aluminum contact resistance.
3.2 Mechanical Stability
Higher pull-out resistance than L-type fins.
Contact pressure may relax under daily start-stop cycles, but remains acceptable for most industrial air coolers.
3.3 Corrosion Behavior
Aluminum forms a protective oxide layer in normal air, but degrades in moist, sulfur-containing flue gas.
Steel 20 requires internal corrosion control depending on the tube side medium.
4. Typical Applications (Industry-Focused)
4.1 Petrochemical Air Coolers
Overhead condensers, compressor interstage coolers
Tube side: hydrocarbons, steam, light oil
Shell side: ambient air (-30°C to +45°C)
4.2 Waste Heat Recovery
Gas turbine exhaust, furnace flue gas (inlet ≤ 320°C)
Caution required if sulfur > 500 ppm or moisture > 15% (acid dew point)
4.3 Natural Gas Compressor Stations
Interstage cooling of compressed natural gas
Lightweight aluminum fins with good air side performance
5. Technical Comparison with Other Fin Types (No Marketing Exaggeration)
| Type | Bonding | Max Temp | Contact Resistance | Cost | Typical Use |
| L-type (wrapped) | Mechanical | ≤ 180°C | High | Low | Low temp air cooling |
| G-type (embedded) | Mechanical lock | ≤ 343°C | Medium | Medium | Medium temp air cooling |
| HF-welded | Metallurgical | ≤ 400°C | Low | High | High temp, thermal cycling |
| Extruded | Metallurgical | ≤ 300°C | Very low | High | Corrosive environments |
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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