347 Stainless Steel Seamless ‘U’-Tubes

Manufacturers of 347 Stainless Steel Seamless ‘U’-Tubes designed for high-temperature heat exchangers, condensers, boilers, and critical industrial applications requiring excellent resistance to intergranular corrosion.

ISO 9001:2015 • ISO 14001:2015 • ISO 45001:2018 • PED 2014/68/EU Certified

347 Stainless Steel Seamless ‘U’-Tubes

Introducing our 347 Stainless Steel Seamless ‘U’-Tubes, engineered for high-temperature and corrosive industrial environments where resistance to intergranular corrosion is critical. Manufactured from niobium-stabilized 347 stainless steel, these tubes deliver excellent resistance to oxidation, thermal stress, and chemical attack at elevated temperatures.

The seamless construction ensures a smooth internal surface, reducing pressure drops and enhancing fluid flow efficiency. The precision-formed ‘U’-bend design maximizes heat transfer efficiency, making these tubes ideal for heat exchangers, condensers, boilers, and high-temperature processing equipment.

Widely used in power generation, petrochemical, chemical processing, and refinery applications, our 347 stainless steel seamless ‘U’-tubes are manufactured under strict quality control to ensure long service life, dimensional accuracy, and reliable performance in severe operating conditions.

347 Stainless Steel Seamless U-Tubes

Comprehensive Reach

Our pipes and tubes are trusted in Mumbai and other key cities across India, supplying critical industries that demand high-temperature stability and corrosion resistance. 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 products for oil & gas, petrochemical, power generation, and infrastructure projects. We are also a preferred supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia, where performance reliability is essential.

Across Europe, our pipes and tubes are widely used in Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), Russia, Ukraine, Kazakhstan, Turkey, France, Greece, and Austria. These markets value the superior oxidation resistance, thermal stability, and precision engineering of our products in manufacturing and high-temperature industrial operations.

Africa and Beyond

In Africa, industries in Morocco, Algeria, Libya, Egypt, Nigeria, Sudan, Chad, Senegal, Kenya, Somalia, Zambia, South Africa, and Namibia depend on our pipes and tubes for their durability and resistance to extreme environmental and operating conditions.

In the Americas, our products serve industries in the United States, Brazil, Argentina, Mexico, and Canada, supporting oil & gas, power generation, construction, and thermal processing applications.

The Asia-Pacific region—including Sri Lanka, Malaysia, Singapore, Philippines, Thailand, and Vietnam—relies on our high-performance piping solutions for diverse industrial needs. Australia benefits from our products in mining, power generation, and water treatment sectors.

Commitment to Quality

Wherever you operate—Doha, Dubai, London, Moscow, or New York—Seminox Pipes & Tubes delivers premium-quality 347 Stainless Steel Seamless ‘U’-Tubes, manufactured in compliance with international standards. Our global reach reflects the trust industries place in our ability to supply durable, high-temperature-resistant solutions for the world’s most demanding environments.

Key Features of 347 Stainless Steel Seamless ‘U’-Tubes

Seamless Construction

Manufactured without welds to ensure uniform structure, superior mechanical strength, and a smooth internal surface for efficient fluid flow.

Exceptional High-Temperature Resistance

310 stainless steel offers outstanding oxidation and scaling resistance, making it ideal for continuous service at elevated temperatures.

Precision U-Bending

Precisely formed U-bends with controlled radius and dimensional accuracy ensure optimal performance in heat exchangers and thermal systems.

High Pressure & Thermal Stability

Designed to perform reliably under high pressure and extreme thermal cycling in boilers, heaters, and condensers.

Smooth Internal Finish

Minimizes pressure loss, improves heat transfer efficiency, and reduces fouling in high-temperature process environments.

Extended Service Life

Excellent resistance to oxidation, corrosion, and thermal fatigue ensures long-lasting performance and reduced maintenance costs.

Product Specification

Outside Diameter
12.70 mm to 50.80 mm
Wall Thickness
0.89 mm to 5.00 mm
Grades
TP-304, 304L, 304H, 304N, 304LN, 316, 316L, 316H, 316Ti, 316N, 316LN, 310, 317, 317L, 321, 321H, 347, 347H, UNS S31260, 31500, 31803, 32205, 32304, 32750, 32760, TP-405, 410
Specifications
ASTM, ASME, DIN EN, JIS (Japan), NF (AFNOR) & as per customer drawing
Length
Up to 30 meters
Applications
LP / HP Heaters, Fertilizer, Power Plant, Petrochemical & Refinery, Airfin Cooler, Nuclear Power Plant

Manufacturing, Testing & Quality Assurance

Advanced Manufacturing

347 Stainless Steel Seamless ‘U’-Tubes are manufactured using advanced seamless tube forming and precision U-bending processes. These techniques ensure excellent dimensional accuracy, uniform metallurgical structure, and superior resistance to oxidation and scaling at elevated temperatures.

Inspection & Testing

Each U-Tube undergoes stringent quality inspections including Eddy Current Testing, Hydrostatic Testing, Positive Material Identification (PMI), dimensional inspection, and detailed visual examination to ensure reliable performance under high temperature and pressure conditions.

Certifications & Compliance

Our 310 Stainless Steel Seamless ‘U’-Tubes are manufactured in accordance with ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU, ensuring full compliance with international quality, safety, and pressure equipment standards.

Typical Applications

High-Temperature Heat Exchangers
Furnaces & Thermal Processing Units
Petrochemical & Refinery Heaters
Power Plants & Superheater Sections
Chemical Processing Equipment
Waste Heat Recovery Systems
Boilers & High-Temperature Pressure Vessels
Hydrocarbon Processing Units
Industrial Process Heating Systems

Looking for 347 Stainless Steel Seamless ‘U’-Tubes?

Contact Seminox Pipes & Tubes for expert technical support, competitive pricing, and dependable global supply of high-temperature 347 Stainless Steel Seamless ‘U’-Tubes for critical industrial and heat transfer applications.

Get in Touch

Phone Number

022 6659 5296
+91 9987403801
+918433943801

Email

domestic@seminoxpipes.com
export@seminoxpipes.com

Address

1219 / 1220, 12th Floor, Prasad Chambers, Girgaon, Mumbai- 400004

Business Hours

Monday — Friday 9am – 5pm
Saturday — 10am – 3pm
Sunday — Closed

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