Fertilizer production involves some of the most challenging environments in the process industry, where high temperatures, elevated pressures, and corrosive chemicals continuously threaten the structural integrity of tubular components. This paper presents advanced stainless steel and nickel-based alloy solutions engineered to withstand these aggressive service conditions. By optimizing corrosion resistance, mechanical strength, and thermal stability, Tubacex alloys improve equipment reliability, plant safety, and operational efficiency. Key solutions include Alloy 699XA®, Uremium® 29 (co-developed with Casale), Saturn® 31 (co-developed with Saipem), Alloy 59, and UNS S31002/TP310L NAG — each tailored to address specific process challenges in ammonia reformers, urea synthesis loops, melamine reactors, nitric acid absorbers, and high-pressure strippers.