As a leading Chinese Inconel alloy supplier, AEETHER manufactures and produces different sizes of Inconel Alloy 603XL pipes. INCONEL® alloy 603XL (patent applied for) is a Ni-Cr alloy with the addition of silicon, molybdenum and rare earth elements. The outstanding characteristics of INCONEL alloy 603XL are its resistance to high temperature oxidation and nitridation.