bitumen 50/70

What is road bitumen 60/70 85/100 90/130 160/220 Bitumen 60/70 80/100 85/10040/50 90/130 and 160/220 is black semi solid heavy hydrocarbon which is the last product of extract tower which by cool down of ambient temperature will convert to solid. With increase of temperature the road bitumen will become semi solid and then liquid. Main …

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