Products Description
TP347 Stainless Steel Pipe is a niobium-stabilized austenitic stainless steel pipe that complies with ASTM A312 standards and is mainly composed of chromium, nickel, and stabilizing element niobium.
Features
Corrosion Resistance
A rapid cooling process followed by solution treatment stabilizes the 18Cr-8Ni austenitic structure. Salt spray testing demonstrates a corrosion rate of less than 0.01mm/y, making it suitable for continuous media conveying systems requiring high corrosion resistance.
Dimensional Consistency
Outer diameter and wall thickness are controlled through multi-roll precision cold drawing and an online laser diameter measurement system. Dimensional deviations are kept within ±0.3mm, ensuring interchangeability and weldability in large-volume supply.
Stable Tensile Properties
Grain size is controlled to ASTM Grade 6 or above during hot rolling and solution annealing, improving yield ratio and ductility. The actual tensile strength generally reaches 540MPa, meeting the dual strength and ductility requirements of medium-pressure systems.
High Surface Cleanliness
Inner and outer surfaces are treated using automated pickling lines and mechanical polishing equipment, achieving a surface roughness of Ra ≤ 0.8μm, minimizing media contamination. This makes it particularly suitable for food, pharmaceutical, and ultra-pure liquid conveying applications.
Applications
For food processing piping systems
In food processing plants, it is used to transport liquid raw materials, steam, or cleaning media, ensuring fluid cleanliness, contamination prevention, and corrosion resistance, meeting food-grade hygiene standards.
For pharmaceutical production equipment connections
In the pharmaceutical industry, it is used to connect reactors, conveying systems, and clean pipelines, providing sealing, chemical resistance, and preventing cross-contamination of media, ensuring a stable pharmaceutical production process.
For chemical media conveying systems
In chemical plants, it is used to transport weak acids, bases, or neutral chemicals, providing pressure resistance, corrosion resistance, and extending equipment life, adapting to various complex working conditions.
For building water supply and drainage stainless steel pipe networks
In construction projects, it is used in hot and cold water supply and drainage systems, preventing rust and leakage, extending the life of the pipe network, and reducing maintenance costs.
Product Parameters
|
Product Name |
ASTM A312 TP304 Stainless Steel Pipe |
|
Out Diameter |
19-813mm |
|
Wall Thickness |
0.5-60mm |
|
Material Standard |
ASTM A312 |
|
Steel Grade |
ASTM A312 TP304 |
|
Surface |
Pickling, Solid solution, Polishing |
|
Packing |
Plastic Film, Plastic Cap, Bundle, Woven bag, Wooden Case, Iron Frame |
|
Delivery |
Within 3 days with stock, 15-50 days based on production |
|
Payment |
T/T, D/P, L/C at sight, Usance L/C, etc. |
Chemical Requirements
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Nb |
|
TP347 |
0.08max |
2.00max |
0.045max |
0.030max |
1.00max |
17.00-19.00 |
9.00-13.00 |
10xC-1.10 |
Mechanical Property
|
Grade |
Tensile strength Min Ksi(Mpa) |
Yield strength Min Ksi(Mpa) |
Elongation % min |
|
TP347 |
75(515) |
30(205) |
35 |
Product Show
All TP347 stainless steel pipes are subject to a comprehensive quality control process. Each finished pipe is inspected to ensure uniform color, smooth inner and outer surfaces, and no visible defects such as pits, rust spots, scratches, or oxide layers. Dimensional tolerances are strictly controlled to meet or exceed ASTM standards, ensuring compatibility in critical engineering applications.
Product Packing
To meet the handling and transport needs of bulk buyers, we use reinforced bundling with steel straps, wires, or flexible materials.
To prevent damage during shipping, protective materials-such as wood, fiberboard, or plastic-are placed between pipes and bindings. This prevents surface scratches or deformation, ensuring pipes arrive in perfect condition and ready for immediate use.
Why Choose us
1. Quality Commitment
If you have any concerns about product quality, we will immediately dispatch professional technicians to communicate with you. If it is confirmed that the issue is caused by our product, we will actively discuss compensation with you.
2. Flexible Payment Options
We accept multiple payment methods, including T/T, D/P, L/C at sight, and Usance L/C, to suit different customer preferences.
3. Reliable Supply Chain Support
We have established long-term and stable partnerships with leading steel pipe manufacturers and stockists in China, allowing us to fulfill a wide variety of product requirements efficiently.
4. Third-Party Inspection Available
To ensure quality assurance, we can arrange for third-party product testing based on customer needs.
5. Responsive Service Team
Our experienced sales and technical teams are always ready to respond to your questions promptly and provide timely support.
We are the manufacturer of ASTM A312 TP347 stainless steel pipe. Welcome to contact us and visit our company.
Email: johnny@yqpipeline.com
WhatsApp: +86 15632733100
Tel: +86 317 6376727
FAQ
Q: What is TP347 stainless steel pipe, and what makes it different from other austenitic stainless steels?
A: TP347 is a niobium-stabilized austenitic stainless steel that offers improved resistance to intergranular corrosion, especially after welding. Unlike TP304 or TP316, it maintains structural stability at high temperatures and resists carbide precipitation, making it suitable for high-heat, high-pressure environments.
Q: In what industries is TP347 stainless steel pipe commonly used?
A: TP347 is widely used in thermal power plants, chemical processing, petrochemical refining, marine exhaust systems, and pressure vessel manufacturing. Its strength at elevated temperatures and corrosion resistance make it ideal for demanding applications in harsh operating conditions.
Q: How does TP347 perform in high-temperature environments?
A: TP347 offers excellent creep strength and oxidation resistance. It retains its mechanical integrity at continuous service temperatures up to 870°C, which is crucial for applications such as superheater and reheater tubing in power generation systems.
Q: Is TP347 suitable for corrosive chemical environments?
A: Yes. TP347 performs well in environments containing organic acids, nitric acid, and oxidizing salts. Its corrosion resistance remains stable in both reducing and oxidizing atmospheres, making it a strong candidate for chemical process lines and reactor systems.
Q: What are the key mechanical and fabrication benefits of TP347?
A: TP347 combines high-temperature strength, weldability, and resistance to thermal fatigue. It conforms to standards like ASTM A312 and A213, and it can be welded without risk of intergranular corrosion. These features make it reliable for pressure-containing equipment and heat exchanger components.
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