Manufacturers of 304L Stainless Steel Seamless ‘U’-Tubes designed for heat exchangers, condensers, boilers, and critical industrial applications requiring superior corrosion resistance and weldability.
Our ASTM A-249 Stainless Steel Seamless High Precision & Heat Exchanger Tubes
are engineered for critical heat transfer and pressure applications where
dimensional accuracy, corrosion resistance, and long-term reliability are essential.
Manufactured in accordance with ASTM A-249 standards, these tubes are produced from
high-quality austenitic and duplex stainless steel alloys designed to perform in
aggressive chemical, thermal, and industrial environments.
The seamless, high-precision construction ensures uniform wall thickness and smooth
internal surfaces, minimizing pressure loss while maximizing thermal efficiency in
heat exchangers, condensers, boilers, and superheaters. These tubes maintain excellent
mechanical strength and oxidation resistance across a wide temperature range, even
under continuous high-pressure service conditions.
Widely used in petrochemical plants, power generation facilities, chemical processing
units, refineries, and industrial heat transfer systems, our ASTM A-249 tubes undergo
stringent quality control, testing, and certification to ensure compliance with
international standards, delivering a dependable, cost-effective, and long-lasting
solution for demanding service environments.
Our ASTM A-249 Stainless Steel Seamless High Precision & Heat Exchanger Tubes are trusted across major industrial cities in India, including Mumbai, Chennai, Ahmedabad, Pune, and Hyderabad, supporting oil & gas, chemical processing, power generation, desalination, and large-scale infrastructure projects.
Throughout the Middle East, we supply the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, and Jordan, where our duplex stainless steel tubes are widely used in offshore platforms, refineries, petrochemical complexes, and marine piping systems requiring high strength and superior corrosion resistance.
In Europe, our UNS S31803 seamless tubes serve industries across Germany, Italy, France, Spain, the United Kingdom, and Turkey, supporting chemical plants, marine systems, and high-temperature processing facilities. Across Africa, the Americas, and the Asia-Pacific region, our products are relied upon for power generation, heavy manufacturing, offshore operations, and industrial heat transfer systems operating in corrosive and high-pressure environments.
Wherever you operate—Doha, Dubai, London, Berlin, or New York—Seminox Pipes & Tubes delivers premium-quality ASTM A-249 Stainless Steel Seamless High Precision & Heat Exchanger Tubes, manufactured in compliance with international standards to ensure durability, traceability, and reliable long-term performance in demanding service conditions.
Precision-engineered seamless manufacturing ensures uniform wall thickness, tight dimensional tolerances, and smooth internal surfaces for optimized fluid flow, reduced pressure drop, and enhanced heat transfer efficiency.
The duplex stainless steel microstructure delivers outstanding resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking in aggressive chemical, marine, and offshore environments.
Offers significantly higher yield and tensile strength than conventional austenitic grades, enabling safe and reliable operation in high-pressure and high-temperature service conditions.
Consistent metallurgy and smooth bore surfaces improve thermal conductivity, minimize fouling, and maximize performance in heat exchangers, condensers, and boiler systems.
Specifically engineered to withstand chloride-rich and elevated temperature environments, enhancing operational safety and long-term system reliability.
Superior durability reduces downtime, maintenance requirements, and total lifecycle costs in demanding industrial, offshore, and marine applications.
Our UNS S31803 Duplex Stainless Steel Seamless Heat Exchanger Tubes are produced using advanced seamless extrusion, cold drawing, solution annealing, and controlled heat treatment processes. The optimized duplex microstructure delivers exceptional mechanical strength along with superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making these tubes ideal for offshore, marine, chemical processing, oil & gas, and high-pressure heat transfer applications.
Every tube is subjected to rigorous quality control procedures including Eddy Current Testing (ECT), Hydrostatic Pressure Testing, Positive Material Identification (PMI), chemical composition analysis, dimensional tolerance verification, mechanical property testing, and detailed visual inspection to ensure consistent performance, alloy integrity, and compliance with international engineering standards.
Manufactured in full compliance with ASTM, ASME, EN, and PED 2014/68/EU directives. Our tubes are supplied with EN 10204 3.1 / 3.2 certification, ensuring complete traceability, material authenticity, and adherence to ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 quality, environmental, and occupational safety management systems.
Partner with Seminox Pipes & Tubes for technical guidance, fast quotations, and reliable worldwide delivery of premium UNS S31803 Duplex Stainless Steel Seamless High Precision & Heat Exchanger Tubes. Our tubes are engineered for oil & gas, marine, chemical processing, desalination, and high-chloride environments requiring exceptional strength, corrosion resistance, and long-term operational reliability.
022 6659 5296 +91 9987403801 +918433943801
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