Shijiazhuang Hongtao Technology Co., Ltd., a professional high-tech enterprise based in Zhengding County, Shijiazhuang, Hebei, China, specializes in R&D, manufacturing and customization of 1800℃ 95/99 alumina tubes, core products for high-temperature industrial and laboratory applications.

Available in 95% and 99% alumina purity options, these alumina tubes feature exceptional high-temperature resistance, with 99% purity tubes reaching a maximum working temperature of 1800℃ and 95% purity ones suitable for 1500℃ long-term use. Made of high-purity α-Al₂O₃ powder via isostatic pressing and high-temperature sintering, they have a density of 3.6-3.9g/cm³ and ultra-low water absorption (<0.01%).

Boasting superior chemical inertness, they resist corrosion from acids, alkalis and molten salts, along with excellent wear resistance and thermal shock resistance. With precise dimensional control (tolerance ±0.05mm) and smooth inner/outer surfaces, they offer good electrical insulation and stable structural integrity even in extreme high-heat environments.

Widely applied in industrial kilns, laboratory equipment, aerospace and new energy fields, they serve as thermocouple protection tubes, furnace tubes and insulation components. Shijiazhuang Hongtao provides customized size (OD 0.7-200mm, length up to 2000mm) solutions, adhering to innovation to deliver high-quality alumina tubes for global partners.