Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C |
| Supply Ability | 10 Tons Per Month |
| Delivery Time | Depends on quantity |
| Packaging Details | WOODEN BOX/ WOVEN BAG |
| Material Grade | ASTM A213 TP347 / UNS S34700 |
| Dimensions | OD: 6-114 mm | Wall Thickness: 0.5-12 mm | Length: Customizable |
| Surface Finish | Bright Annealed / Pickled / Polished (Ra ≤0.8μm) |
| Manufacturing Process | Seamless Cold-Drawn / Hot-Rolled |
| High-Temperature Performance | Max Service Temperature: 870°C | Oxidation Resistance up to 900°C |
| Mechanical Properties | Tensile Strength ≥515 MPa | Yield Strength ≥205 MPa | Elongation ≥35% |
| Industry Applications | Power Generation | Petrochemical | Food & Pharma | Automotive Exhaust Systems |
| Typical Use Cases | Boiler Tubes | Superheaters | Heat Exchangers | Catalytic Reactors |
| Brand Name | YUHONG |
| Model Number | ASTM A213 TP347 |
| Certification | TUV, API, PED, ISO TUV、API、PED、ISO |
| Place of Origin | China |
View Detail Information
Explore similar products
Stainless Steel Seamless Tube GOST 9941-91, DIN 17456 , DIN 17458, EN10216-5,
EN10216-5 1.4404 Stainless Steel Seamless Tube
Stainless Steel Seamless Tube , EN10216-5 , D4/T3 , 1.4301 , 1.4306 , 1.4307 , 1
ASME SA213 TP321 / TP321H / 1.4541 Stainless Steel Seamless Tube Heat Exchanger
Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 10 Tons Per Month |
| Delivery Time | Depends on quantity | Packaging Details | WOODEN BOX/ WOVEN BAG |
| Material Grade | ASTM A213 TP347 / UNS S34700 | Dimensions | OD: 6-114 mm | Wall Thickness: 0.5-12 mm | Length: Customizable |
| Surface Finish | Bright Annealed / Pickled / Polished (Ra ≤0.8μm) | Manufacturing Process | Seamless Cold-Drawn / Hot-Rolled |
| High-Temperature Performance | Max Service Temperature: 870°C | Oxidation Resistance up to 900°C | Mechanical Properties | Tensile Strength ≥515 MPa | Yield Strength ≥205 MPa | Elongation ≥35% |
| Industry Applications | Power Generation | Petrochemical | Food & Pharma | Automotive Exhaust Systems | Typical Use Cases | Boiler Tubes | Superheaters | Heat Exchangers | Catalytic Reactors |
| Brand Name | YUHONG | Model Number | ASTM A213 TP347 |
| Certification | TUV, API, PED, ISO TUV、API、PED、ISO | Place of Origin | China |
| High Light | High-Temperature Seamless ASTM A213 Tubes ，UNS 34700 Seamless ASTM A213 Tubes ，High-Pressure Seamless ASTM A213 Tubes | ||
ASTM A213 TP347
ASTM A213 TP347( UNS 34700) stainless steel tube is a high alloy austenitic stainless steel pipe, designed for high temperature, high pressure, and corrosion resistant
environment, widely used in energy, chemical, and petroleum fields.
1. Material properties of TP347
1.1 Chemical composition
Core components (typical values, unit: wt%):
Chromium (Cr): 17-19%
Provides oxidation resistance and corrosion resistance.
Nickel (Ni): 9-13%
Stabilizes austenite structure, enhances toughness and high temperature resistance.
Niobium (Nb): ≥10× carbon content
Combines with carbon to form stable niobium carbide (NbC), prevents the precipitation of chromium carbide and avoids intergranular corrosion.
Carbon (C): ≤0.08%
Control the carbon content to reduce the risk of sensitization.
Other elements: Manganese (Mn≤2%), Silicon (Si≤1%), Phosphorus (P≤0.045%), Sulfur (S≤0.03%).
1.2 Corrosion resistance
Anti-intergranular corrosion: The addition of niobium effectively prevents the precipitation of chromium carbide during welding or high temperature (450-850°C), and
avoids corrosion caused by chromium depletion at grain boundaries.
Oxidation resistance: In high-temperature oxidizing environments (such as boilers), a dense chromium oxide layer is formed on the surface, and the oxidation
resistance temperature can reach 870°C.
Acid resistance: It performs well in nitric acid, organic acids and weak alkaline media, but should be used with caution in strong reducing acids (such as hydrochloric acid).
2. Mechanical properties of ASTM A213 TP347
Tensile strength: ≥515 MPa
Yield strength: ≥205 MPa
Elongation: ≥35% (gauge length 50mm)
Hardness: ≤90 HRB (Rockwell hardness)
High temperature performance: maintains good creep resistance and endurance strength at 600-800°C.
3. Application areas of ASTM A213 TP347 tube
3.1 Power industry
Boiler tubes and superheater tubes: used for high-temperature and high-pressure steam pipelines in thermal power plants.
Heat exchangers: resistant to oxidation and thermal fatigue in high-temperature exhaust gas recovery systems.
3.2 Petrochemicals
Cracking furnace tubes: withstand high-temperature hydrocarbon media in ethylene cracking units.
Catalytic reforming equipment: resist corrosive environments containing sulfur and chloride ions.
3.3 Food and pharmaceuticals
Sanitary pipes: because there is no risk of sensitization corrosion, they meet FDA hygiene standards and are used to transport high-purity liquids.
3.4 Other fields
Nuclear power plants: corrosion-resistant pipes for secondary circuit systems.
Automobile exhaust system: high temperature exhaust gas corrosion resistance.
4. Manufacturing and standards of ASTM A213
4.1 Implementation standards
ASTM A213: Specification for seamless cold-drawn or hot-rolled austenitic steel pipes.
ASME SA213: Equivalent standard for boilers and pressure vessels.
Other standards:
EN 10216-5 (European standard)
JIS G3463 (Japanese standard)
GB/T 5310 (Chinese standard).
4.2 Production process
Hot rolling/cold drawing: Dimensional accuracy is controlled by hot rolling or cold drawing process.
Solution treatment: Rapid cooling (water quenching) after heating to 1040-1150°C to eliminate processing stress and homogenize the structure.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
Get in touch with us
Leave a Message, we will call you back quickly!