DIPTI METAL INDUSTRIES
ASTM A312 TP347H Stainless Steel Pipes: Global Manufacturer & Exporter
Dipti Metal – Your Premier Worldwide ASTM A312 TP347H Exporter, Global ASTM A312 TP347H Supplier, ASTM A312 TP347H Dealers, ASTM A312 TP347H Distributors, and Stockists of High-Quality ASTM A312 TP347H Stainless Steel Pipes for Demanding High-Temperature Industrial Applications.
Introduction to Dipti Metal's ASTM A312 TP347H Stainless Steel Pipe Expertise
Dipti Metal proudly stands as a globally recognized and leading ASTM A312 TP347H manufacturer, worldwide ASTM A312 TP347H exporter, global ASTM A312 TP347H supplier, ASTM A312 TP347H Dealers, ASTM A312 TP347H Distributors, and ASTM A312 TP347H Stockists of high-quality ASTM A312 TP347H Stainless Steel Pipes. TP347H (UNS S34709) is a Niobium-stabilized austenitic stainless steel renowned for its exceptional high-temperature strength, superior creep resistance, and excellent intergranular corrosion resistance after exposure to sensitizing temperatures.
This premium stainless steel material, specifically governed by ASTM A312 for seamless and welded pipes, is engineered for critical applications in environments demanding long-term operational integrity at elevated temperatures. Its stabilization with Niobium (Columbium) and Tantalum effectively prevents chromium carbide precipitation, making it ideal for industries such as power generation (boilers, superheaters), petrochemicals, refineries, and chemical processing. Our unwavering commitment to stringent quality control ensures that each TP347H pipe meets the precise chemical composition and mechanical property requirements of ASTM A312, providing robust and durable solutions for diverse and critical high-temperature projects worldwide.
Key Features and Advanced Benefits of Our ASTM A312 TP347H Stainless Steel Pipes
- Excellent Intergranular Corrosion Resistance: TP347H is stabilized with Niobium (Columbium) and Tantalum, which effectively prevents the formation of chromium carbides at grain boundaries, thus providing superior resistance to intergranular corrosion after exposure to temperatures in the sensitization range (427°C to 816°C).
- Superior High-Temperature Strength & Creep Resistance: Designed for continuous service at elevated temperatures, TP347H offers significantly higher creep and stress rupture properties compared to non-stabilized austenitic grades like TP304, making it ideal for high-temperature pressure-containing applications.
- Good Oxidation Resistance: Exhibits good resistance to oxidation in continuous service up to 900°C (1650°F) and intermittent service up to 816°C (1500°F), similar to TP304.
- Good Weldability: TP347H has good weldability by all standard fusion methods. Due to its stabilization, it can often be welded without the need for post-weld annealing, particularly beneficial for large fabrications. Specific filler metals (e.g., ER347) are recommended.
- Maintains Properties After Sensitization Range Exposure: Its primary advantage lies in retaining its corrosion resistance and mechanical properties even after prolonged exposure to temperatures that would cause sensitization in non-stabilized grades.
- High Ductility & Toughness: Despite its high-temperature performance, TP347H maintains excellent ductility and toughness, which are crucial for fabrication and operational reliability.
- Full Compliance & Traceability: Manufactured in strict adherence to ASTM A312 standards, ensuring consistent quality, full material traceability (with EN 10204 3.1/3.2 MTCs), and performance for regulated industries globally.
ASTM A312 TP347H Manufacturing Process & Product Types for TP347H Stainless Steel Pipes
Dipti Metal supplies ASTM A312 TP347H pipes manufactured through various advanced processes to meet specific project needs and performance criteria for high-temperature and critical service:
Seamless Pipes (ASTM A312 Type S)
Description: Produced from a solid billet without any longitudinal weld seam, resulting in a pipe with exceptional uniformity and integrity throughout its wall. This manufacturing method is often preferred for critical, high-pressure, and high-temperature applications where maximum strength and reliability are paramount.
Features: Offers superior inherent strength and toughness, impeccable uniform wall thickness, and enhanced resistance to internal pressure, thermal stresses, and creep at elevated temperatures. Eliminates potential weaknesses associated with welded seams, making it ideal for high-stress and high-integrity systems.
Applications: High-pressure fluid transfer lines, critical chemical processing piping, power generation boiler and superheater tubing, petrochemical heat exchangers, and other critical applications where weld integrity is paramount for safety and longevity at high temperatures.
Welded Pipes (ASTM A312 Type W - ERW / EFW)
Description: Manufactured by forming a stainless steel strip into a cylindrical shape and then welding the edges longitudinally. This can involve Electric-Resistance Welding (ERW) for smaller diameters or Electric-Fusion Welding (EFW) for larger diameters and heavier wall thicknesses, often with additional filler metal. Welded TP347H products are typically supplied in a solution annealed and stabilized condition to ensure optimal properties.
Features: Cost-effective for a wide range of diameters and wall thicknesses, consistent dimensions, good surface finish, and suitable for numerous high-temperature applications where seamless is not strictly necessary. EFW allows for the production of larger diameters and heavier wall thickness pipes, balancing performance with cost efficiency.
Applications: General industrial piping in high-temperature environments, exhaust systems, non-critical process lines in refineries, and various fluid conveyance systems where a good balance of cost, high-temperature strength, and intergranular corrosion resistance is required.
Special Finishes & Value-Added Services
Description: TP347H pipes can be supplied with various surface finishes, including standard mill finish (e.g., pickled, bright annealed), mechanically polished, or specialized finishes, to meet specific aesthetic or functional requirements.
Features: While high-temperature performance is key, specific finishes can still be important for certain applications. Polished finishes may be used where external appearance matters, and proper heat treatment ensures internal surface integrity. Additional testing and inspections are common for TP347H to confirm its stabilized nature and high-temperature properties.
Applications: Structural components in high-temperature environments, piping systems requiring specific external appearance, and systems demanding confirmation of material properties through extensive testing.
Material Specifications: ASTM A312 TP347H (UNS S34709)
Dipti Metal ensures that all ASTM A312 TP347H stainless steel pipes strictly conform to the chemical composition and mechanical property requirements of the ASTM A312 standard, providing robust performance in critical high-temperature applications globally.
ASTM A312 TP347H Chemical Composition (Typical Values, % Max unless otherwise stated)
| Element | Composition (Max %) |
|---|---|
| Carbon (C) | 0.04 - 0.10 |
| Manganese (Mn) | 2.00 |
| Phosphorus (P) | 0.045 |
| Sulfur (S) | 0.030 |
| Silicon (Si) | 0.75 |
| Chromium (Cr) | 17.0 - 20.0 |
| Nickel (Ni) | 9.0 - 13.0 |
| Niobium (Nb) + Tantalum (Ta) | 8 x C min - 1.00 max |
Note: Detailed specifications, including other elements and specific analysis requirements, are available in the full ASTM A312 standard. All material test certificates (MTCs) conform to EN 10204 3.1/3.2.
ASTM A312 TP347H Mechanical Properties (Minimum Requirements)
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (75 ksi) |
| Yield Strength (0.2% Offset) | 205 MPa (30 ksi) |
| Elongation in 2 in. (50 mm) | 35% |
| Hardness (Rockwell B) | 92 max |
Note: Mechanical properties for TP347H are generally similar to TP304 but with enhanced high-temperature properties. For exact values, refer to ASTM A312.
Dimensions, Tolerances & End Finishes
Dipti Metal supplies ASTM A312 TP347H stainless steel pipes in a full range of nominal pipe sizes (NPS) and schedules, ensuring compatibility with various standard piping systems for high-temperature applications. All products conform to precise dimensional tolerances as specified by ASTM A312 and referenced standards.
- Dimensional Standards:
- Pipes (ASTM A312): Dimensions (outside diameter, wall thickness, nominal pipe size) typically conform to ASME B36.19M (Stainless Steel Pipes) and ASME B36.10M (Welded and Seamless Wrought Steel Pipes).
- ASTM A312 TP347H Pipe Size Range: Available from NPS 1/8" up to NPS 48" and larger, depending on the manufacturing method (seamless for smaller, EFW/ERW for larger).
- ASTM A312 TP347H Wall Thickness (Schedule): Wide range of schedules (e.g., SCH 5S, 10S, 40S, 80S, 160S, XXS), suitable for diverse pressure, temperature, and application requirements common in high-temperature service.
- ASTM A312 TP347H Lengths: Standard random lengths (SRL) of 5 to 7 meters (16 to 22 ft), double random lengths (DRL) of 10 to 13 meters (33 to 42 ft), or cut to specific customer requirements and project specifications.
- ASTM A312 TP347H End Finishes: Plain end, or beveled end (for welding preparation per ASME B16.25), ensuring optimal fit-up for critical connections. Threaded ends are also available upon request for specific non-welded applications.
- ASTM A312 TP347H Tolerances: Strict tolerances are maintained for outside diameter, wall thickness, out-of-roundness, and straightness as per ASTM A312, crucial for system integrity, efficient fabrication, and smooth fluid flow in demanding environments.
For specific dimensional tables and detailed tolerance requirements, please refer to the latest editions of ASME B36.19M, ASME B36.10M, and ASTM A312 standards.
Extensive Typical Applications for Dipti Metal's ASTM A312 TP347H Stainless Steel Pipes
Dipti Metal's ASTM A312 TP347H Stainless Steel Pipes are widely trusted and utilized in a broad spectrum of critical industrial sectors and demanding high-temperature applications, consistently providing reliable, creep-resistant, and intergranular corrosion-resistant fluid conveyance and ensuring paramount system integrity:
- Power Generation Industry: Essential for superheaters, reheaters, and boiler tubes where high-temperature strength, creep resistance, and resistance to sensitization are critical.
- Petrochemical & Refinery Industries: Utilized in critical process piping, heat exchangers, and furnace components exposed to high temperatures and corrosive environments, especially where intergranular corrosion is a concern.
- Chemical Processing Industry: Indispensable for piping systems handling hot, corrosive chemicals, especially in applications where the material might be exposed to temperatures that cause sensitization in other grades.
- Aircraft Exhaust Manifolds: Due to its high-temperature strength and oxidation resistance, TP347H is often used in demanding aerospace applications.
- High-Temperature Pressure Vessels: Used in components requiring excellent mechanical properties and corrosion resistance at elevated temperatures.
- Expansion Joints & Bellows: Where flexibility and high-temperature integrity are required in exhaust and process systems.
- General Industrial Piping: For various fluid conveyance systems and structural components operating under severe high-temperature conditions.
ASTM A312 TP347H Countries & Cities We Export Stainless Steel Pipes From India To
Dipti Metal is a proud Worldwide Exporter and Global Supplier of ASTM A312 TP347H Stainless Steel Pipes, with an extensive network of Dealers, Distributors, and Stockists. We ensure timely and compliant delivery to major industrial hubs across the globe.
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah
- Saudi Arabia: Riyadh, Jeddah, Dammam, Al Khobar, Jubail
- Qatar: Doha, Ras Laffan
- Oman: Muscat, Sohar, Salalah
- Kuwait: Kuwait City, Ahmadi
- Bahrain: Manama, Sitra
- Singapore: Singapore City
- Malaysia: Kuala Lumpur, Johor Bahru, Port Klang
- Indonesia: Jakarta, Surabaya, Balikpapan
- Thailand: Bangkok, Rayong, Laem Chabang
- Vietnam: Ho Chi Minh City, Hanoi, Da Nang
- Philippines: Manila, Cebu
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg
- Egypt: Cairo, Alexandria, Port Said
- Nigeria: Lagos, Port Harcourt, Abuja
- Kenya: Nairobi, Mombasa
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf
- United Kingdom: London, Manchester, Aberdeen, Glasgow
- France: Paris, Marseille, Lyon
- Italy: Milan, Rome, Genoa
- Spain: Madrid, Barcelona, Valencia
- Netherlands: Rotterdam, Amsterdam, The Hague
- Belgium: Antwerp, Brussels, Ghent
- Turkey: Istanbul, Izmir, Ankara
- USA: Houston, Los Angeles, New York, Chicago, New Orleans
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal
- Mexico: Mexico City, Monterrey, Guadalajara
- Brazil: São Paulo, Rio de Janeiro, Salvador
- Argentina: Buenos Aires, Cordoba
- Chile: Santiago, Valparaíso
- Japan: Tokyo, Osaka, Nagoya
- South Korea: Seoul, Busan, Ulsan
- Australia: Sydney, Melbourne, Perth, Brisbane
- New Zealand: Auckland, Wellington, Christchurch
- China: Shanghai, Guangzhou, Tianjin, Shenzhen
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad (Local Markets)
Why Choose Dipti Metal for Your Premium ASTM A312 TP347H Stainless Steel Pipes?
- Unrivaled Expertise & Quality Assurance: As a premier Global ASTM A312 TP347H Supplier and ASTM A312 TP347H Manufacturer, we adhere to ISO 9001 certified processes, rigorous QA, and provide full material traceability with EN 10204 3.1/3.2 MTCs, ensuring every TP347H product meets stringent ASTM A312 standards. Our commitment to quality is unwavering, from raw material sourcing to final delivery.
- Extensive Product Range & Customization: We maintain a comprehensive stock of seamless and welded (ERW, EFW) TP347H pipes in a wide array of NPS, ODs, schedules, and lengths. Our advanced manufacturing capabilities allow for **custom fabrication** to exact client drawings, unique designs, and specialized specifications, including specialized heat treatments and testing.
- Global Network of Dealers & Distributors: With a robust worldwide presence, including a vast network of trusted Dealers, Distributors, and Stockists, we ensure prompt availability, localized support, and efficient supply chains for our global clientele, reaching even remote project sites.
- Expert Technical Consultation: Decades of specialized stainless steel piping expertise enables our seasoned technical team to provide unparalleled guidance on material selection, application suitability, optimal specifications for high-temperature service, welding considerations, and compliance for your most critical and demanding projects involving TP347H.
- Robust Worldwide Export & Logistics: As a dedicated Worldwide Exporter, we guarantee efficient and reliable global delivery with comprehensive documentation support, including customs clearance assistance, ensuring smooth logistics and timely project completion across all continents. We handle all aspects of international shipping with expertise.
- Competitive Pricing & Superior Value Proposition: Leveraging strategic global sourcing partnerships, streamlined manufacturing processes, and optimized operations, we consistently deliver premium quality ASTM A312 TP347H pipes at highly competitive prices, enhancing project cost-efficiency without compromising on critical performance, safety, and longevity in severe high-temperature environments.
- Comprehensive Certifications: Adherence to all relevant industry certifications and regulatory compliance standards, including API, PED, AD2000, NACE (for specific requirements), providing full assurance of product integrity for specialized applications.
Get a Quote Today for Your ASTM A312 TP347H Stainless Steel Pipe Requirements!
Are you searching for dependable, high-performance ASTM A312 TP347H Stainless Steel Pipes for your critical power generation, petrochemical, chemical processing, or other high-temperature applications? Contact Dipti Metal, your expert global stainless steel pipe supplier, manufacturer, and exporter, today to discuss your specific requirements or to request a personalized, custom quote. Our knowledgeable and responsive team is dedicated to providing you with the most effective, safest, and most reliable stabilized stainless steel piping solutions that guarantee long-term operational excellence, enhanced system integrity, and unparalleled project success in demanding high-temperature environments.
Price guidance (non-binding): USD 4.00–12000 per pipe depending on size, schedule/wall thickness, manufacturing type (seamless/welded), finish, quantity, and delivery terms. Final prices are quotation-based.
ASTM A312 TP347H Stainless Steel Pipes — Frequently Asked Questions
What are ASTM A312 TP347H pipes primarily used for?
TP347H stainless steel pipes are primarily used in high-temperature service applications where excellent intergranular corrosion resistance and high-temperature strength are critical. This includes power generation (boilers, superheaters), petrochemical, refinery, and chemical processing industries.
Why is TP347H considered a stabilized stainless steel?
TP347H is stabilized with Niobium (Columbium) and Tantalum. These elements form stable carbides, preventing the precipitation of chromium carbides at grain boundaries during high-temperature exposure (427-816°C), thus eliminating sensitization and ensuring excellent intergranular corrosion resistance.
How does TP347H differ from TP304/304H?
While similar to TP304 in general corrosion resistance, TP347H offers significantly superior high-temperature strength, creep resistance, and, most importantly, enhanced intergranular corrosion resistance due to its Niobium/Tantalum stabilization, making it preferred for prolonged high-temperature service.
Is ASTM A312 TP347H suitable for welding?
Yes, TP347H exhibits good weldability by common fusion methods. However, due to its stabilization, specific filler metals (e.g., ER347) are recommended, and proper welding procedures are crucial to maintain its stabilized properties and corrosion resistance.
What are the typical temperature limits for TP347H service?
TP347H is specifically designed for high-temperature service, offering excellent properties up to approximately 816°C (1500°F) in continuous service where resistance to sensitization and creep strength are important. Its stabilization prevents carbide precipitation that can occur in non-stabilized grades in the 427-816°C range.
Does TP347H meet other international standards?
Yes, TP347H often aligns with international standards such as EN 1.4961 or X8CrNiNb16-13 for similar compositions and applications, making it suitable for global projects. Dipti Metal supplies pipes with full material test certificates (MTCs) conforming to EN 10204 3.1/3.2.
What Our Customers Say
“Dipti Metal has consistently supplied us with high-quality TP304 Stainless Steel Pipes and Tubes, meeting our stringent requirements for chemical processing applications. Their reliability and global export capabilities are excellent.”
— Syed Muhammed Ali, Buyer, CCED, Oman
Contact Us
Seaworthy export packing • Line-wise bagging & tagging • Full documentation & TPI.