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My company is the production of corundum, with import alumina via modern craft pure burn. Alumina content percent for 995. Mainly used in steel, 99.7 - smelting, chemical industry, building materials, etc GaoWenLu temperature measurement with protecting tube, is the high temperature protection as precious metals platinum protection of material, it is _1800 1300 degrees temperature, my company's products, thermal shock resistance, good heat conduction speed, service life is long, corundum tube in 1600-1800 ° oxidation atmosphere of eight months above can be used in glass kiln. Use can reach more than 3 months through tube is. Corundum carburizing furnace, vacuum furnace and other various GaoWenLu best use of the furnace pipe in 1600-1800 °, can use one and a half year above, the biggest diameter 125 mm, still can be customized according to the user's requirements processing. The company members to serve customers, domestic users, price cif rate is homogeneous products, at the same time, the most reasonable price for the customer LiDang jianguo. Case, tracking service. And willing to accept user testing. 25,16,14,12,10,8,6,5,4,3,30,40,50,60,80,90,100,110 diameter. Technical performance numerical value High aluminum Corundum Al2O3 content >85 99-99.5 SiO2 content <12 <0.2 Fe2O3 conten <0.5 <0.05 0.1 Using temperature Long-term1550 Short-term1600-1700 1600 The maximum use temperature 1600 1800 HardnessMohs 7 8-9 Densitykg/m3 slip casting 3.7-3.9 hot embossing 3.7-3.85 Water Absorption% <0.2 0.1 0.2 Rupture strength slip casting 2000Kg/ hot embossing 1500Kg/