347 Stainless Steel Welded Tubes

Manufacturers of 347 Stainless Steel Welded Tubes stabilized with niobium to prevent carbide precipitation, offering excellent resistance to intergranular corrosion and reliable performance in high-temperature and oxidizing environments.

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

347 Stainless Steel Welded Tubes

Our 347 Stainless Steel Welded Tubes are specifically designed for high-temperature applications where exceptional corrosion resistance and long-term durability are required. Stabilized with niobium, Grade 347 effectively prevents carbide precipitation, providing excellent resistance to intergranular corrosion even after prolonged exposure to elevated temperatures.

These tubes offer superior resistance to oxidation, scaling, and pitting in aggressive chemical and thermal environments. The welded construction ensures consistent strength, dimensional accuracy, and structural reliability, while the smooth internal and external surface finish enhances corrosion resistance, cleanliness, and ease of maintenance.

Widely used in aerospace components, chemical processing plants, power generation systems, heat exchangers, and petrochemical refineries, our 347 stainless steel welded tubes deliver dependable performance under heat and stress. Available in a wide range of sizes and customizable specifications, they provide a high-performance solution for demanding industrial applications.

347 Stainless Steel Welded Tubes

Comprehensive Reach

Our 347 Stainless Steel Welded Tubes are widely supplied across India, including Mumbai and other major industrial hubs, supporting industries that require excellent high-temperature strength, oxidation resistance, and long-term operational reliability.

In the Middle East, countries such as Iraq, Kuwait, Jordan, Lebanon, Saudi Arabia, Yemen, Oman, and the UAE—including Abu Dhabi, Dubai, Al Ain, Ajman, Sharjah, and Ras Al Khaimah—rely on our products for oil & gas, petrochemical plants, power generation, and infrastructure projects operating under severe thermal conditions.

We are also a trusted supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia, where industries demand stainless steel welded tubes with outstanding resistance to intergranular corrosion, oxidation, and aggressive chemical environments.

Across Europe, our 347 stainless steel welded tubes are supplied to Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), Russia, Ukraine, Kazakhstan, Turkey, France, Greece, and Austria, serving power plants, chemical processing units, aerospace facilities, and heavy industrial manufacturing sectors.

Africa, Americas & Asia-Pacific

In Africa, industries in Morocco, Algeria, Libya, Egypt, Nigeria, Sudan, Chad, Senegal, Kenya, Somalia, Zambia, South Africa, and Namibia depend on our 347 Stainless Steel Welded Tubes for their resistance to oxidation, corrosion, and extreme operating environments.

In the Americas, our products are supplied to the United States, Brazil, Argentina, Mexico, and Canada, supporting power generation, oil & gas, petrochemical, and high-temperature industrial manufacturing applications.

Our reach also extends across the Asia-Pacific region, including Sri Lanka, Malaysia, Singapore, Philippines, Thailand, Vietnam, and Australia, where high-performance stainless steel welded tubes are essential for thermal processing, infrastructure, and industrial systems.

Commitment to Quality

Wherever your project is located—whether in Doha, Dubai, London, Moscow, or New York—Seminox Pipes and Tubes delivers premium 347 Stainless Steel Welded Tubes manufactured in strict compliance with international quality standards.

Our global presence reflects the confidence industries place in our ability to supply durable, corrosion-resistant, and high-temperature stainless steel tube solutions for demanding industrial environments worldwide.

Key Features of 347 Stainless Steel Welded Tubes

Niobium Stabilized Stainless Steel

Stabilized with niobium to prevent carbide precipitation, offering excellent resistance to intergranular corrosion after welding and during prolonged high-temperature exposure.

Excellent High-Temperature Performance

Retains mechanical strength and structural stability at elevated temperatures, making it suitable for thermal cycling and continuous heat service.

Superior Resistance to Oxidation & Scaling

Performs reliably in oxidizing environments, resisting scaling and surface degradation under severe thermal conditions.

High-Integrity Welded Construction

Manufactured using advanced welding technologies to ensure strong weld seams, dimensional precision, and consistent mechanical properties.

Smooth & Uniform Surface Finish

Smooth internal and external surfaces enhance corrosion resistance, reduce fouling, and improve flow efficiency in industrial systems.

Ideal for High-Temperature & Critical Services

Widely used in power generation, aerospace, petrochemical refineries, chemical processing plants, and heat exchanger applications.

Product Specification

Outside Diameter Range
1/8" NB to 8" NB
Wall Thickness Range
SCH 5S to SCH 80S (Custom thickness available)
Length
As per customer requirement. Maximum length up to 24 meters.
Material Grades
317, 317L, 317H
UNS S31700, UNS S31703
Manufacturing Standards
ASTM A312, ASTM A358, ASTM A778
Supply Condition
Solution Annealed, Pickled & Passivated.
Other conditions available on request.
Applications
Chemical Processing Plants
Petrochemical Industry
Pharmaceutical & Biotechnology
Marine & Offshore Equipment
Pulp & Paper Industry
Heat Exchangers & Condensers
Corrosive Fluid Handling Systems

Manufacturing, Testing & Quality Assurance

Advanced Welded Tube Manufacturing

347 Stainless Steel Welded Tubes are manufactured using premium chromium-nickel stainless steel stabilized with niobium, along with advanced forming and welding technologies. Strictly controlled production processes ensure uniform wall thickness, excellent weld integrity, precise dimensional accuracy, and dependable performance in high-temperature and oxidizing environments.

Inspection & Testing Procedures

Each 347 stainless steel welded tube undergoes comprehensive quality inspections including weld seam examination, Eddy Current Testing (ECT), dimensional verification, Positive Material Identification (PMI), and detailed visual inspection to ensure resistance to intergranular corrosion, oxidation, scaling, and long-term service reliability.

Standards & Certifications

Our 347 Stainless Steel Welded Tubes are manufactured in compliance with ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and applicable ASTM, EN, and international standards, ensuring consistent quality, safety, and reliability for heat exchangers, power generation, petrochemical processing, aerospace, and other high-temperature industrial applications.

Typical Applications

Heat Exchangers & Condensers
Power Generation & Thermal Power Plants
Petrochemical & Refinery Processing Units
Chemical Processing Equipment
Aerospace & Aviation Components
High-Temperature Furnace & Heater Parts
Oil & Gas Processing Systems
Pressure Vessels & Reactor Piping
Heavy Industrial & High-Temperature Fabrication

Looking for 347 Stainless Steel Welded Tubes?

Connect with Seminox Pipes & Tubes for expert technical support, competitive pricing, and reliable global supply of premium 347 Stainless Steel Welded Tubes stabilized with niobium for excellent resistance to intergranular corrosion, high-temperature performance, and critical industrial 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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