Manufacturers and suppliers of ASTM A-803 Stainless Steel Seamless High Precision & Heat Exchanger Tubes, engineered for high-temperature, high-pressure, power generation, chemical processing, and thermal transfer systems.
Our ASTM A-803 Stainless Steel Seamless High Precision & Heat Exchanger Tubes
are engineered for critical industrial environments where elevated temperatures,
high pressure, and long-term corrosion resistance are essential.
ASTM A-803 covers seamless austenitic stainless steel tubing designed specifically
for high-temperature and severe service applications in thermal and pressure systems.
The seamless, precision-manufactured construction ensures uniform wall thickness,
tight dimensional tolerances, and smooth internal surfaces, minimizing pressure loss
and maximizing heat transfer efficiency in demanding operating conditions.
These tubes offer excellent resistance to oxidation, scaling, and general corrosion
when exposed to aggressive media and prolonged high-temperature service.
Widely used in petrochemical processing, power generation, chemical plants,
heat exchangers, furnaces, and pressure equipment, our ASTM A-803 seamless tubes
are manufactured and tested to international standards, delivering a reliable,
durable, and cost-effective solution for extreme industrial environments.
Our ASTM A-803 Stainless Steel Seamless High Precision & Heat Exchanger Tubes are trusted across major industrial hubs in India, including Mumbai, Chennai, Ahmedabad, Pune, and Delhi NCR. Throughout the Middle East—UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Iraq, and Jordan—our tubes support critical oil & gas, petrochemical, water treatment, and large-scale EPC and infrastructure projects operating under high-temperature and high-pressure service conditions.
In Europe, we supply Italy, Germany, Spain, the United Kingdom, France, Turkey, Greece, Austria, and Eastern European markets, where our ASTM A-803 seamless stainless steel tubes are specified for power generation, chemical processing, thermal systems, and heavy manufacturing applications requiring consistent dimensional accuracy, oxidation resistance, and long-term operational reliability.
Across Africa, the Americas, and the Asia-Pacific region, our ASTM A-803 stainless steel seamless tubes support petrochemical plants, refineries, heat exchangers, pressure equipment, mining operations, and energy infrastructure. Industries in the United States, Canada, Brazil, Mexico, South Africa, Egypt, Nigeria, Singapore, Malaysia, Thailand, Vietnam, and Australia rely on our products for dependable performance in corrosive, high-temperature, and extreme operating environments.
Wherever you operate—Doha, Dubai, London, Houston, Singapore, or Sydney— Seminox Pipes & Tubes delivers premium-quality ASTM A-803 Stainless Steel Seamless High Precision & Heat Exchanger Tubes, manufactured and certified to international standards for full material traceability, regulatory compliance, and long-term performance in critical thermal, pressure, and industrial service applications.
Manufactured in compliance with ASTM A-803 standards to achieve uniform wall thickness, tight dimensional tolerances, and smooth internal bore surfaces for reliable fluid flow, consistent pressure handling, and high-efficiency thermal performance in critical systems.
High-quality stainless steel alloys provide strong resistance to oxidation, scaling, and general corrosion in high-temperature and chemically aggressive environments, ensuring long-term durability in thermal and process applications.
Designed to withstand elevated pressures, thermal cycling, and mechanical stress, making these tubes ideal for use in heat exchangers, pressure equipment, reactors, and energy systems operating under demanding service conditions.
Precision-finished internal surfaces improve thermal conductivity, reduce fouling, and maintain efficient heat exchange in condensers, boilers, and high-temperature process systems.
Maintains mechanical integrity and dimensional accuracy under sustained high-temperature operation, improving system safety, performance consistency, and long-term reliability.
Engineered for extended operational life with minimal maintenance requirements, delivering cost-effective performance in power generation, petrochemical, chemical processing, and industrial heat transfer applications.
UNS S31803, UNS S32205, and UNS S32750 duplex stainless steel seamless tubes are manufactured using precision hot extrusion and cold drawing processes, followed by controlled solution annealing, straightening, and pickling. This ensures a balanced duplex microstructure with high mechanical strength, excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, and consistent dimensional accuracy for heat exchangers, offshore systems, marine piping, and high-pressure service applications.
Every tube undergoes comprehensive quality control, including Eddy Current Testing (ECT), Hydrostatic Pressure Testing, Positive Material Identification (PMI), chemical composition analysis, mechanical testing, dimensional verification, surface roughness checks, and 100% visual inspection. These procedures ensure full compliance with ASTM A789 / ASME SA789 and reliable performance in corrosive, high-temperature, and high-stress operating environments.
Manufactured in accordance with ASTM A789 / A790, ASME SA789 / SA790, EN 10216-5, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and PED 2014/68/EU requirements. Tubes are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates (MTC), ensuring full material traceability, regulatory approval, and acceptance for EPC, oil & gas, offshore, chemical processing, and desalination projects worldwide.
Partner with Seminox Pipes & Tubes for globally certified, UNS S31803 / UNS S32205 Duplex Stainless Steel Seamless High Precision & Heat Exchanger Tubes, manufactured to ASTM A789 / ASME SA789 / EN 10216-5 and supplied with EN 10204 3.1 / 3.2 Mill Test Certificates (MTC). Trusted by EPC contractors, oil & gas operators, marine engineers, desalination plants, and chemical processing facilities worldwide for high strength, superior corrosion resistance, and long-term performance in critical service environments.
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