Hiwa Oil Co, bitumen penetration grade 60/70 is used mainly as a paving grade, which is suitable for road construction, and maintenance. This grade of bitumen is normally used in the manufacturing of hot mix asphalt for pavement bases and wearing courses. Bitumen 60/70 is one of the most used bitumen grades among all other bituminous products.
Penetration bitumen grade 60/70 is produce by process of vacuum Bottom (VB) and air in the reactor. And due to the control of the process conditions, we reaching to pure quality of penetration grade bitumen 60/70 which has a penetration between 60~70. Bitumen is specified by the penetration and softening point test. The penetration grade bitumen 60/70 has a thermoplastic property which causes the material to soften at high temperatures and to harden at lower temperatures. This grade of bitumen 60/70 has very strong viscosity compared to other grades and its widely used.
Guaranty and safety of penetration grade bitumen 60/70
Hiwa Oil Co, guaranty the quality of penetration grade bitumen 60/70, while inspecting by international inspection companies, the both quality and quantity of Penetration Bitumen grade 60/70, at loading port before loading and completing containers stuffing. The penetration Bitumen grade 60/70 also has its own prove of product quality of each batches by QC, while producing in refinery and before shipping. Hiwa Oil Co, guarantees the quality which meet with ASTM, according to following specification.
Specification of penetration bitumen 60/70
|Bitumen 60-70||Specification||Test method|
|Penetration @ 25 c||60/70||D.5|
|Softening point c||49/56||D.36|
|Ductility @25 c||100 Min||D.113|
|Loss on heating(wt) %||0.2 Max||D.6|
|Flash point c||250 Min||D.92|
|Solubility in CS2(wt) %||99.05 Min||D.4|
|Drop in penetration after heating %||20 Max||D.5|
|Density @25 c||1.01/1.06||D.70/D.3289|
|Viscosity @60ºc P||2000±400||ASTM D 2171|
|Viscosity@135ºc CST||300 min||ASTM D 2170|