Place of Origin:
China
Brand Name:
YUHONG
Certification:
ISO 9001/TUV/PED
Model Number:
Alloy Steel Fin Tube HFW Serrated Type
HFW Finned Tube Serrated Type SA387 Grade 12, 13CrMo4–5 Fins for Power Plant HRSG
An HRSG (Heat Recovery Steam Generator) comprises three core sections:
1.7335 13CrMo4–5 Alloy Steel Fins Equivalent Designations
| Standard | Equivalent Grade |
| EN (Europe) | 1.7335 / 13CrMo4-5 |
| ASTM (USA) | SA387 Grade 12 |
| JIS (Japan) | SFVAF12 |
1.7335 13CrMo4–5 Alloy Steel Fins Chemical Composition (wt%)
| Element | C | Si | Mn | Cr | Mo | P (max) | S (max) |
| 13CrMo4-5 | 0.08–0.18 | 0.15–0.35 | 0.40–0.70 | 1.00–1.50 | 0.45–0.65 | 0.025 | 0.015 |
1.7335 13CrMo4–5 Alloy Steel Fins Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 440–640 MPa |
| Yield Strength (Rp0.2) | ≥270 MPa |
| Elongation (A₅) | ≥20% |
| Impact Energy (KV, 20°C) | ≥40 J |
| Hardness (HB) | ≤200 |
HRSG Tube Types, Parameters, and Functions
| Tube Type | Key Parameters | Function |
|---|---|---|
| Economizer | - OD: 25–50 mm - Temp: 250–350°C - Pressure: 5–15 MPa |
Preheats feedwater using exhaust gas, improving thermal efficiency. |
| Evaporator | - OD: 30–60 mm - Temp: 300–400°C - Pressure: 10–20 MPa |
Converts water to steam via heat absorption from flue gas. |
| Superheater | - OD: 25–50 mm - Temp: 500–600°C - Pressure: 15–25 MPa |
Increases steam temperature above saturation for turbine efficiency. |
| Serrated Fins | - Height: 12–25 mm - Thickness: 1–2 mm - FPI: 3–7 |
Enhances heat transfer via turbulence and surface area (used in all sections). |
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