YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Supply Ability | 1000 tons per month |
| Delivery Time | 7 days |
| Packaging Details | Ply-wooden case with iron frame |
| Fpi | 9-13 |
| Fin Thk | 1.3mm |
| Base Tube Material | TP347, TP347H, 1.4550 |
| Tube Type | Seamless |
| Fin Type | Solid Fin |
| Production Process | Cold Drawn |
| Base Tube OD | 141.3MM |
| Tube Standard | ASTM A376 |
| Brand Name | Yuhong |
| Model Number | ASTM A376 TP347H |
| Certification | ABS, CCS, BV, LR, DNV |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | 1000 tons per month |
| Delivery Time | 7 days | Packaging Details | Ply-wooden case with iron frame |
| Fpi | 9-13 | Fin Thk | 1.3mm |
| Base Tube Material | TP347, TP347H, 1.4550 | Tube Type | Seamless |
| Fin Type | Solid Fin | Production Process | Cold Drawn |
| Base Tube OD | 141.3MM | Tube Standard | ASTM A376 |
| Brand Name | Yuhong | Model Number | ASTM A376 TP347H |
| Certification | ABS, CCS, BV, LR, DNV | Place of Origin | China |
| High Light | Solid Fin Tube Convection Coil ，Solid Fin Seamless Tube ，TP347H Solid Fin Seamless Tube | ||
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
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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