1.4404 Stainless Steel Seamless ‘U’-Tubes (AISI 316L)

Manufacturers of EN 1.4404 / AISI 316L Stainless Steel Seamless ‘U’-Tubes for heat exchangers, condensers, boilers, and corrosive industrial applications requiring superior pitting and chloride resistance.

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

1.4404 Stainless Steel Seamless ‘U’-Tubes (AISI 316L)

Introducing our EN 1.4404 / AISI 316L Stainless Steel Seamless ‘U’-Tubes, engineered for industries that require superior corrosion resistance, reliability, and thermal efficiency. Manufactured from low-carbon, molybdenum-alloyed austenitic stainless steel, 1.4404 offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-rich and mildly acidic environments.

The seamless construction ensures high structural integrity and leak-free performance, while the precision-engineered ‘U’-shape enhances heat transfer and optimizes space utilization. These tubes are ideally suited for heat exchangers, condensers, evaporators, and boiler systems operating in demanding conditions.

With outstanding weldability, toughness, and hygienic properties, 1.4404 seamless ‘U’-tubes are widely used in chemical processing, pharmaceuticals, food & beverage, marine, and offshore industries. Available in a wide range of sizes and customizable specifications, our 1.4404 Stainless Steel Seamless ‘U’-Tubes deliver long-lasting, cost-effective solutions for critical thermal and industrial applications.

1.4404 / AISI 316L Stainless Steel Seamless U-Tubes

Comprehensive Reach

Our 1.4404 (AISI 316L) Stainless Steel Seamless ‘U’-Tubes are supplied across India, including Mumbai and other major industrial hubs, supporting chemical plants, pharmaceutical facilities, food processing units, and heat exchanger manufacturers.

In the Middle East, customers in Saudi Arabia, UAE (Dubai, Abu Dhabi, Sharjah), Oman, Qatar (Doha), Kuwait, Bahrain, Iraq, and Jordan rely on our products for chloride-rich, corrosive, and high-purity applications in oil & gas, desalination, and water treatment sectors.

Across Europe, our 1.4404 / 316L seamless tubes are widely used in Germany, Italy, Spain, France, the United Kingdom, Turkey, Greece, Austria, and Eastern Europe, where strict quality standards, corrosion resistance, and hygienic properties are essential for chemical processing, power generation, and industrial manufacturing.

Africa, Americas & Asia-Pacific

In Africa, industries in Egypt, Algeria, Morocco, Nigeria, South Africa, Kenya, Libya, and Namibia depend on our 1.4404 tubes for their resistance to pitting, crevice corrosion, and aggressive environmental conditions.

In the Americas, our products support projects across the United States, Canada, Brazil, Argentina, and Mexico, particularly in chemical plants, refineries, and thermal systems.

In the Asia-Pacific region, we supply customers in Singapore, Malaysia, Thailand, Vietnam, Philippines, Sri Lanka, and Australia, serving heat exchangers, condensers, evaporators, and hygienic processing industries.

Commitment to Quality

Wherever your project is located—whether in Dubai, London, Mumbai, Houston, or Sydney—Seminox Pipes & Tubes delivers premium 1.4404 (AISI 316L) Stainless Steel Seamless ‘U’-Tubes manufactured to international standards. Our global footprint reflects the confidence industries place in our ability to provide reliable, corrosion-resistant, and durable solutions for critical applications worldwide.

Key Features of 1.4404 (AISI 316L) Stainless Steel Seamless ‘U’-Tubes

Seamless Construction

Ensures high structural integrity, leak-free performance, and consistent mechanical properties.

Superior Corrosion Resistance

Molybdenum-alloyed 316L offers excellent resistance to pitting, crevice corrosion, and chlorides.

Low Carbon Content (L Grade)

Minimizes carbide precipitation, improving weldability and preventing intergranular corrosion.

Precision U-Bending

Accurate bend radius and tight dimensional tolerances for efficient heat exchanger operation.

Smooth Internal Finish

Reduces pressure loss and enhances heat transfer efficiency in thermal systems.

Long Service Life

Designed for continuous service in corrosive, hygienic, and high-reliability industrial environments.

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

EN 1.4404 (AISI 316L) Stainless Steel Seamless ‘U’-Tubes are produced using advanced seamless tube manufacturing processes followed by solution annealing to achieve optimal corrosion resistance, ductility, and metallurgical stability. Precision U-bending ensures tight dimensional tolerances and consistent heat-transfer performance.

Inspection & Testing

Each 1.4404 Seamless ‘U’-Tube undergoes rigorous quality inspections including Eddy Current Testing (ECT), Hydrostatic Testing, Positive Material Identification (PMI), Dimensional Inspection, Chemical Analysis, and Visual Examination to ensure compliance with international standards and reliable service performance.

Certifications & Compliance

Our 1.4404 / 316L Stainless Steel Seamless ‘U’-Tubes are manufactured and tested in accordance with recognized international standards and supplied with full material traceability. Compliance with ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 and PED 2014/68/EU ensures consistent quality, safety, and global acceptance.

Typical Applications

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

Looking for 1.4404 (AISI 316L) Stainless Steel Seamless ‘U’-Tubes?

Contact Seminox Pipes & Tubes for expert technical guidance, competitive pricing, and dependable global supply of 1.4404 / 316L Seamless ‘U’-Tubes engineered for corrosive, chloride-rich, and critical 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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