1, temperature resistance: 780 degrees C; 2, pressure resistance: s8.6MPa; 3, media: contains 100% acid and alkali benzene, oil and water gas, all kinds of chemical media; 4, applicable materials: metal, non-ferrous metal; 5, applicable parts: pipe container sits; 6, applicable units: petroleum, chemical, power generation, smelting, gas, paper, plumbing, etc. 7, pressure tube diameter 80mm; 8, storage period: 15 years.