Our AIR PRE HEATER TUBES (APH TUBES) are precision-engineered tubes designed specifically for air pre-heater and boiler applications. Manufactured from premium grade Corten Steel, Carbon Steel, and Stainless Steel, these tubes are available in ERW and Cold Drawn Seamless (CDS) forms, ensuring durability, high strength, and excellent resistance to corrosion and oxidation. They conform rigorously to national and international quality standards including ASTM A 423 (Corten A), BS-6323 Part-V, BS-3059 (IBR), ASTM A-588, ASTM A-210 Gr. A1, ASTM A-179, ASTM A-178, ASTM A-214, ASTM A-192, ASTM A-106 Gr. B & C, ASTM A-333/334 Gr. 6, DIN-2391, ST-37, ST-52, IS-3601, and IS-1914, making them ideal for high-temperature industrial environments. The tubes undergo a comprehensive manufacturing process including annealing, surface treatment, 100% Eddy Current Testing (ECT) for defect detection, straightening, and hydrostatic testing to ensure weld integrity and mechanical robustness. These APH tubes are engineered to deliver superior thermal efficiency in heat exchangers and air pre-heaters in thermal power plants, industrial boilers, and heavy machinery, accommodating both IBR and Non-IBR applications. The outstanding mechanical properties and corrosion resistance of these tubes provide enhanced lifecycle and operational safety, reducing maintenance frequency and increasing overall equipment effectiveness.

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