Pipelines category calculator according to GOST 32569-2013 «Industrial steel pipe-lines. Requirements for design and operation in explosive and chemically dangerous industries» Transported medium -Select- Mediums with toxic effect GOST 12.1.007 Explosion and fire hazardous mediums GOST 12.1.044 Low-combustible (LC) and non-combustible (NC) mediums medium subclass -Select- Design Pressure, MPaG Design Temperature, oC Calculate