GOST 34347-2017 «Steel welded vessels and apparatus» Vessel group calculator Characteristic of working medium: Explosive, flammable and / or toxic hazard classes 1, 2, 3 according to GOST 12.1.007 Non explosive, not flammable and hazard class 4 according to GOST 12.1.007 Design pressure, MPa Design temperature, oC Calculate
