1.4307 Stainless Steel Seamless ‘U’-Tubes (AISI 304L)

Manufacturers of EN 1.4307 / AISI 304L Stainless Steel Seamless ‘U’-Tubes for heat exchangers, condensers, boilers, and industrial applications requiring excellent corrosion resistance, weldability, and long service life.

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

1.4307 Stainless Steel Seamless ‘U’-Tubes (AISI 304L)

Our 1.4307 Stainless Steel Seamless ‘U’-Tubes, also known as AISI 304L, are engineered for applications requiring excellent corrosion resistance, reliability, and long service life. The low carbon content of 1.4307 minimizes the risk of intergranular corrosion after welding, making these tubes highly suitable for fabricated and welded heat transfer systems.

The seamless construction ensures superior mechanical strength and a smooth internal surface that improves fluid flow efficiency and reduces pressure loss. The precision ‘U’-bend design enhances heat transfer performance while optimizing space utilization, making these tubes ideal for heat exchangers, condensers, and evaporators.

Widely used in industries such as chemical processing, food & beverage, pharmaceuticals, HVAC, and general industrial applications, 1.4307 Stainless Steel Seamless ‘U’-Tubes offer excellent formability, weldability, and dependable performance under low to moderate temperature and pressure conditions. Available in a wide range of sizes and custom specifications, they provide a cost-effective and durable solution for demanding thermal systems.

1.4307 Stainless Steel Seamless U-Tubes

Comprehensive Global Reach

Our pipes and tubes are widely supplied across India, including Mumbai and other major industrial cities, serving critical sectors such as power generation, petrochemicals, and process industries. 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, water treatment, and infrastructure projects. We are also a trusted supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia.

In Europe, our stainless steel tubes are extensively used in Italy, Spain, Germany, the United Kingdom (England, Wales, Scotland, and Ireland), France, Greece, Austria, Turkey, Russia, Ukraine, and Kazakhstan. These markets value our precision manufacturing, consistent quality, and compliance with international standards.

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 tubes for their corrosion resistance and durability in harsh operating environments.

In the Americas, our products support key industries in the United States, Canada, Brazil, Argentina, and Mexico, particularly in oil & gas, construction, and manufacturing sectors.

In the Asia-Pacific region, countries such as Sri Lanka, Malaysia, Singapore, Philippines, Thailand, Vietnam, and Australia utilize our tubes in thermal, industrial, and water treatment applications.

Commitment to Quality

Wherever you are—whether in Doha, Dubai, London, Moscow, or New York—Seminox Pipes & Tubes delivers high-quality 1.4307 (AISI 304L) Stainless Steel Seamless ‘U’-Tubes manufactured to meet international standards. Our global presence reflects the confidence industries place in our ability to supply reliable, durable, and application-specific tube solutions worldwide.

Key Features of 1.4307 (AISI 304L) Stainless Steel Seamless ‘U’-Tubes

Low-Carbon Austenitic Grade

1.4307 (304L) features reduced carbon content, minimizing the risk of intergranular corrosion after welding.

Seamless Construction

Provides uniform wall thickness, excellent mechanical strength, and a smooth internal surface for efficient fluid flow.

Excellent Corrosion Resistance

Offers strong resistance to general corrosion, oxidation, and mildly aggressive chemical environments.

Precision U-Bending

Accurate bend radius and dimensional consistency ensure optimal performance in heat exchangers and condensers.

Superior Weldability & Formability

Easily welded and formed without post-weld heat treatment, making it ideal for fabrication-intensive applications.

Long Service Life

Manufactured under strict quality control to deliver reliable performance and extended operational lifespan.

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

1.4307 (AISI 304L) Stainless Steel Seamless ‘U’-Tubes are manufactured using advanced seamless tube forming processes followed by precision U-bending. The low-carbon composition ensures excellent metallurgical stability and resistance to intergranular corrosion.

Inspection & Testing

Each U-Tube is subjected to Eddy Current Testing, Hydrostatic Testing, Positive Material Identification (PMI), dimensional inspection, and visual examination to guarantee defect-free performance.

Certifications & Compliance

Manufactured in accordance with international standards and certified to ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU, ensuring consistent quality and global compliance.

Typical Applications

Heat Exchangers
Condensers
Power Plants
Petrochemical & Refineries
Fertilizer Plants
Nuclear Power Stations
Air Fin Coolers
Boilers & Pressure Vessels
Process Industries

Looking for 1.4307 (304L) Stainless Steel Seamless ‘U’-Tubes?

Contact Seminox Pipes & Tubes for expert technical support, competitive pricing, and dependable global supply of high-quality 1.4307 Stainless Steel Seamless ‘U’-Tubes for heat exchangers 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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