This grade of Bitumen is made by Pure Bitumen aeration, which leads to Bitumen oxidization with hot air. In this procedure, hydrogen atoms get a reaction with oxygen atoms, and the result is hydrocarbons with lower penetration and higher softening point than Pure Bitumen. Penetration Bitumen 60/70 is a raw material for the production of Blown Bitumen 75/25 and many other grades by passing very hot air through the Bitumen 60/70, the oxidation operation begins.
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