The Air Blowing Bitumen is produced by process of vacuum Bottom (VB) and air in the reactor. and due to the control of the process conditions, different grades are produced.
40/50” due to its medium air blowing and penetration, is used in tropical areas.
60/70” due to its medium air blowing and penetration, is used in mild areas.
85/100” due to its relatively low air blowing and penetration, is used in cold areas.