1. Design pressure: Inner vessel: Full to 0.1Mpa Jacket: 0.4Mpa 2. Design temperature: -30-200ºC 3. Operating temperature: -30-200ºC 4. High voltage test: 20kv 5. Glass-enamel layer thickness: 1.0-2.3MM 6.Corrosion resistance: organic or inorganic acid, organic solution and weak alkaline corrosion (not including hydrofluoric acid, which the consistency of fluorine medium is more the 30%, phosphoric acid and alkali ,when consistency are more than 30% and temperature higher than or equal to 180ºC 7. Resistance to sharp temperature variation: cool shock 110ºC, hot shock 110