Multi-necked flask，reactor vessel

Notice:1. All products defaut 29/42 out joint, other size please email/call us to modify.2. Jacketed tank joint is fit for 8mm rubber pipe, other size please email/call us.3. Other dimension and shape aviliable on request, Please email/call us. Features:1. High temperature resistant, 1100 °C.2. Corrosion-resistant3. Good thermal stability4. Good transparency for light5. Good electrical insulation Impurity content AL Fe K Na Li Ca Mg Cu Mn Cr B Ti 5-12 0.19-1.5 0.71-1.6 0.12-1.76 0.38-0.76 0.17-1.23 0.05-0.5 0.05 0.05 <0.05 <0.1 <1.0  Spectral transmission at 1.0mm thickness m m <220 255 280 315 350 38 590 780 % 89 91 93 93 93 93 93.2 93.4 Physical Proerties (g/cc)Density20 °C kg.m-3 2.2 Degree of Hardness Moh's Scale 5.5-7.0 Softening point(degree) 1683 °C Annealing point 1215 °C