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| Brand Name: | Yuhong |
| Model Number: | ASTM A376 TP347H |
| MOQ: | 100 KGS |
| Price: | Negotiable |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 1000 tons per month |
Alloy Steel Seamless Tube ASTM A376 TP347H, Solid Fin Tube, For Convection Coil Tube
The ASTM A376 TP347H Solid Fin Tube is made from high-temperature austenitic stainless steel (347H), designed for high-performance heat transfer in convection sections of furnaces and boilers. The solid fin is welded directly onto the tube surface using High Frequency Welding (HFW) or manual processes, creating a durable structure capable of operating under extreme thermal and corrosive conditions.
| Element | Content (%) |
|---|---|
| C | 0.04 – 0.10 |
| Mn | ≤ 2.00 |
| P | ≤ 0.045 |
| S | ≤ 0.030 |
| Si | ≤ 1.00 |
| Cr | 17.0 – 19.0 |
| Ni | 9.0 – 13.0 |
| Nb (Cb) | 10 × C min. |
| Fe | Balance |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 217 HBW |
| Max. Service Temp | ~ 1000°C (1830°F) |
Excellent High-Temperature Strength
Ideal for use in superheater and reheater tubes in power plants.
Enhanced Creep Resistance
Nb-stabilization makes 347H superior under prolonged high-heat exposure.
Superior Corrosion & Oxidation Resistance
Maintains integrity in flue gas environments with high sulfur content.
Solid Fin Structure
Provides mechanical durability, long service life, and efficient heat transfer.
Weldable and Formable
Supports complex U-bends and coil configurations for compact convection sections.
Mainly used in high-temperature heat recovery and energy conversion systems, such as:
Furnace Convection Coils
Power Plant Boilers
Petrochemical Reheaters
Waste Heat Recovery Units
Refinery Heater Tubes
