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| Brand Name: | YUHONG |
| Model Number: | Alloy Steel Fin Tube HFW Serrated Type |
| MOQ: | 1PC |
| Price: | Negotiable |
| Delivery Time: | Depends on order quantity |
| Payment Terms: | T/T, L/C AT SIGHT |
1.7335 13CrMo4–5 Alloy Steel Fin Tube HFW Serrated Type for Heat Recovery Boiler
An HRSG (Heat Recovery Steam Generator) comprises three core sections:
1.7335 13CrMo4–5 Alloy Steel Fin Tube Equivalent Designations
| Standard | Equivalent Grade |
| EN (Europe) | 1.7335 / 13CrMo4-5 |
| ASTM (USA) | A335 P11 |
| JIS (Japan) | STPA24 |
| IS (India) | 11CrMo910 |
1.7335 13CrMo4–5 Alloy Steel Fin Tube 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 |
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). |
| Category | Subcategory |
| Gas Condition | Clean |
| Dirty | |
| Corrosive | |
| Slagging | |
| Purpose | Process |
| Energy Recovery | |
| Circulation | Natural |
| Forced | |
| Firing | Unfired |
| Fired (Supplementary) | |
| Steam System | Single Pressure |
| Multi Pressure | |
| Reheat | |
| Configuration | Vertical |
| Horizontal | |
| Modular |
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