347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes
Manufacturers of 347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes engineered for high-temperature service, and power generation applications requiring superior creep strength, and pressure conditions.
347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes
Our 347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes
are engineered for critical applications requiring superior strength,
thermal stability, and long-term performance in high-temperature and
corrosive operating environments. Manufactured from 347H stainless steel,
a high-carbon, niobium and tantalum stabilized austenitic grade, these tubes
provide enhanced creep resistance and excellent resistance to intergranular
corrosion, even after prolonged exposure to elevated service temperatures.
The seamless construction ensures a smooth internal surface, uniform wall
thickness, and exceptional structural integrity, minimizing pressure drops
while maximizing heat transfer efficiency and fluid flow performance in
demanding process systems. These tubes maintain mechanical strength and
dimensional stability across a wide temperature range, making them ideal
for heat exchangers, boilers, superheaters, and high-temperature process
piping.
Widely used in petrochemical, power generation, refinery, and chemical
processing industries, our 347H seamless tubes undergo rigorous quality
control and testing to meet international standards such as ASTM A213 /
ASME SA213. They deliver a reliable, durable, and cost-effective solution
for applications exposed to extreme thermal stress, pressure, and
corrosive service conditions.
Comprehensive Reach
Our 347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes are trusted in Mumbai and major industrial hubs across India, supporting critical sectors such as petrochemical processing, power generation, chemical manufacturing, and heavy infrastructure. In the Middle East, countries including Iraq, Kuwait, Jordan, Lebanon, Saudi Arabia, Yemen, Oman, and the UAE (Abu Dhabi, Dubai, Al Ain, Ajman, Sharjah, and Ras Al Khaimah) rely on our high-temperature stainless steel tubes for refinery units, energy projects, and demanding process systems. We are also a preferred supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia, where material stability and long-term thermal performance are essential.
In Europe, our 347H seamless tubes are extensively supplied to Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), Russia, Ukraine, Kazakhstan, Turkey, France, Greece, and Austria. These regions value our precision manufacturing, consistent metallurgy, and long-term performance in high-temperature and corrosive industrial environments such as refineries, chemical plants, and power stations.
Africa, Americas & Asia-Pacific
Across Africa, industries in Morocco, Algeria, Libya, Egypt, Nigeria, Sudan, Chad, Senegal, Kenya, Somalia, Zambia, South Africa, and Namibia depend on our 347H stainless steel tubes for their exceptional resistance to thermal stress, corrosion, and harsh operating conditions in energy, mining, and chemical processing facilities.
In the Americas, our products serve the United States, Brazil, Argentina, Mexico, and Canada, supporting petrochemical complexes, power generation plants, refinery operations, and high-performance industrial systems.
In the Asia-Pacific region, countries such as Sri Lanka, Malaysia, Singapore, Philippines, Thailand, and Vietnam rely on our high-temperature stainless steel tube solutions for refinery units, chemical processing, and industrial heat transfer applications.
Industries in Australia benefit from the durability and thermal stability of our tubes, particularly in mining, power generation, desalination, and large-scale industrial processing sectors.
Commitment to Quality
Wherever you operate—Doha, Dubai, London, Moscow, or New York—Seminox Pipes & Tubes delivers premium-quality 347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes, manufactured in compliance with international standards such as ASTM A213 / ASME SA213. Our global footprint reflects the trust industries place in our ability to supply reliable, high-temperature, and corrosion-resistant stainless steel tube solutions for the world’s most demanding environments.
Key Features of 347H Stainless Steel Seamless Heat Exchanger Tubes
High-Carbon Stabilized Grade (347H)
Manufactured from niobium and tantalum stabilized 347H stainless steel with controlled higher carbon content, providing enhanced creep strength and superior performance in continuous high-temperature service conditions.
Seamless High-Precision Construction
Fully seamless manufacturing ensures uniform wall thickness, excellent dimensional accuracy, and a smooth internal surface, delivering reliable performance under high pressure and thermal cycling conditions.
Exceptional Resistance to Intergranular Corrosion
The stabilized alloy composition prevents carbide precipitation at grain boundaries, maintaining corrosion resistance after prolonged exposure to temperatures between 800°F and 1500°F (427°C–815°C).
Superior High-Temperature Strength & Creep Resistance
Retains mechanical strength and structural integrity at elevated service temperatures, making it ideal for superheaters, boilers, and refinery process systems.
Excellent Thermal & Pressure Performance
Designed to withstand high internal pressures and severe thermal fluctuations while maintaining dimensional stability and heat transfer efficiency in demanding industrial applications.
Long Service Life & Low Maintenance
Manufactured under stringent quality control systems to ensure extended operational life, reduced downtime, and lower total lifecycle costs in aggressive, high-temperature, and corrosive environments.
Product Specification
Manufacturing, Testing & Quality Assurance
Advanced Manufacturing
347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes are manufactured using advanced seamless tube forming, cold finishing, and controlled high-temperature solution annealing processes. The niobium-stabilized, high-carbon stainless steel composition ensures excellent creep resistance, superior high-temperature strength, and a uniform metallurgical structure, making these tubes ideal for petrochemical, power generation, refinery, and high-heat process environments.
Inspection & Testing
Each seamless tube undergoes rigorous inspection and testing including Eddy Current Testing (ECT), Hydrostatic or Pneumatic Pressure Testing, Positive Material Identification (PMI), dimensional and surface finish verification, chemical and mechanical property testing, and detailed visual inspection to ensure compliance with ASTM, ASME, and EN standards.
Certifications & Compliance
Manufactured in compliance with ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU requirements. Mill Test Certificates (EN 10204 3.1) are provided with each supply, ensuring full traceability, material conformity, and adherence to international pressure equipment and quality management standards.
Typical Applications
Looking for 347H Stainless Steel Seamless Heat Exchanger Tubes?
Contact Seminox Pipes & Tubes for expert technical guidance, competitive pricing, and reliable global supply of premium 347H Stainless Steel Seamless High Precision & Heat Exchanger Tubes, engineered for high-temperature, petrochemical, power generation, and corrosive service environments.