bitumen penetration 60/70

pub-ltd is a company based in Iran actively involved in manufacturing procurement distribution and export of various grades of penetration Bitumen .Bitumen penetration grade 60/70 means the penetration value is in the range 60 to 70 at standard test conditions which commonly used as a Paving Grade. It is a kind of bitumen, which is provided during the process of oxidation of vacuum bottom. In addition, bitumen is the main fossil fuel component of oil sands. Bitumen combination with asphalt is solid, uses in paving.