UNS S32304 Stainless Steel Seamless ‘U’-Tubes

Manufacturers of UNS S32304 Stainless Steel Seamless ‘U’-Tubes for heat exchangers, condensers, boilers, and other critical industrial applications.

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

UNS S32304 Stainless Steel Seamless ‘U’-Tubes

Our UNS S32304 Stainless Steel Seamless ‘U’-Tubes are engineered to deliver excellent corrosion resistance and mechanical strength for applications operating in moderately aggressive environments. As a lean duplex stainless steel, UNS S32304 features a balanced austenitic and ferritic microstructure, offering improved resistance to pitting, crevice corrosion, and stress corrosion cracking compared to conventional austenitic grades—while remaining cost-effective.

The seamless construction ensures high structural integrity, uniform wall thickness, and leak-proof performance in pressure-bearing systems. Its precisely formed ‘U’-shape enhances heat transfer efficiency and optimizes space utilization, making these tubes ideal for compact thermal equipment.

Commonly used in heat exchangers, condensers, and evaporators, UNS S32304 seamless ‘U’-tubes are well suited for industries such as chemical processing, petrochemicals, desalination, and pulp & paper. Available in a wide range of sizes and customizable specifications, these tubes provide a durable and reliable solution for long-term industrial performance.

UNS S32304 Stainless Steel Seamless U-Tubes

Comprehensive Reach

Our pipes and tubes are widely trusted across Mumbai and other major cities in India, serving critical industrial sectors. 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 preferred supplier in Qatar (Doha), Bahrain, Syria, Azerbaijan, and Georgia.

Across Europe, our pipes and tubes are 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-engineered products for manufacturing, construction, and energy-related applications.

Africa and Beyond

In Africa, industries in Morocco, Algeria, Libya, Egypt, Nigeria, Sudan, Chad, Senegal, Kenya, Somalia, Zambia, South Africa, and Namibia trust our pipes and tubes for their corrosion resistance and performance in demanding environments.

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

Throughout the Asia-Pacific region, including Sri Lanka, Malaysia, Singapore, Philippines, Thailand, and Vietnam, our high-performance tubes are used in a wide range of industrial applications.

Industries in Australia rely on our products for durability and strength in mining, water treatment, and infrastructure development.

Commitment to Quality

Wherever your project is located—Doha, Dubai, London, Moscow, or New York—Seminox Pipes and Tubes delivers premium-quality UNS S32304 Stainless Steel Seamless ‘U’-Tubes manufactured in accordance with international standards. Our global presence reflects the trust industries place in our ability to deliver reliable, cost-effective, and durable solutions for challenging operating conditions worldwide.

Key Features of UNS S32304 Stainless Steel Seamless ‘U’-Tubes

Lean Duplex Stainless Steel Grade

UNS S32304 offers a balanced austenitic-ferritic microstructure providing high strength with reduced nickel content.

Enhanced Corrosion Resistance

Superior resistance to pitting, crevice corrosion, and stress corrosion cracking compared to conventional austenitic grades.

Seamless Construction

Uniform wall thickness and smooth internal surface ensure leak-proof performance and consistent mechanical properties.

Precision U-Bending

Accurate bend radius control ensures efficient heat transfer in compact heat exchanger designs.

High Strength-to-Weight Ratio

Allows for thinner walls while maintaining pressure resistance, reducing overall system weight and cost.

Cost-Effective Long Service Life

Manufactured under strict quality control to deliver durability, reliability, and reduced lifecycle 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

UNS S32304 Stainless Steel Seamless ‘U’-Tubes are manufactured using advanced seamless tube forming and precision U-bending technology to achieve excellent dimensional accuracy, uniform wall thickness, and consistent lean duplex metallurgical properties.

Inspection & Testing

Each U-Tube undergoes comprehensive quality inspections including Eddy Current Testing, Hydrostatic Testing, Positive Material Identification (PMI), dimensional inspection, and detailed visual examination to ensure reliable, defect-free performance in service.

Certifications & Compliance

All UNS S32304 Seamless ‘U’-Tubes are manufactured in compliance with ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU requirements, ensuring conformity with international quality, safety, and environmental standards.

Typical Applications of UNS S32304 Stainless Steel Seamless ‘U’-Tubes

Heat Exchangers
Condensers
Power Generation Plants
Chemical Processing Units
Petrochemical & Refinery Plants
Desalination Plants
Air Fin Coolers
Boilers & Pressure Vessels
Pulp & Paper Industries

Looking for UNS S32304 Stainless Steel Seamless ‘U’-Tubes?

Contact Seminox Pipes & Tubes for expert technical support, competitive pricing, and reliable global supply of high-performance UNS S32304 seamless ‘U’-tubes, ideal for cost-efficient and corrosion-resistant 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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