Our seamless low-carbon Corten steel tubes are available in Grades 1 and 3 in full compliance with ASTM A423 and ASME SA423 specifications, making them ideal for critical pressure applications such as heat exchangers and air heaters. Manufactured with minimum wall thickness, these tubes combine superior mechanical strength with the distinct weathering resistance of Corten steel. The seamless design ensures outstanding integrity under high-pressure and high-temperature conditions, significantly reducing risks of leaks or failures. Grade 1 tubes offer excellent corrosion resistance and weldability for general pressure service, while Grade 3 tubes provide enhanced mechanical properties suited for more demanding industrial environments. Both grades feature low carbon content to maintain weldability without compromising durability, ensuring long service life in harsh conditions. Choose these ASTM A423 Grade 1 and 3 seamless tubes for dependable performance and safety in your pressure vessel and heat transfer projects.