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Black Alumina Tube Al2O3 Ceramic Tubing Black Aluminum Oxide PipeThe black alumina ceramic tube is made primarily of alumina and undergoes a unique processing technique to attain its distinctive black color. This tube retains alumina's inherent properties, such as excellent insulation, high-temperature resistance, corrosion resistance, and wear durability, while also possessing remarkable light-shielding capabilities that cater to specific applications and requirements.