Bitumen VG40
Hiwa Oil Co, bitumen VG40 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 VG40 is specified by the Viscosity test. and one of the most used bitumen grades for paving constructions.
Guaranty and safety of bitumen VG40
Hiwa Oil Co, guaranty the quality of VG40, while inspecting by international inspection companies, the both quality and quantity, at loading port before loading and completing containers stuffing. The Bitumen 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, according to following specification.
| Bitumen VG40 | Specification |
| Absolute Viscosity at 60ºC, Poises | Min. 3200 |
| Kinematic Viscosity at 135ºC, cSt | Min. 400 |
| Flash Point (Cleveland Open Cup) ºC | Min. 220 |
| Solubility in trichloroethylene, % | Min. 99 |
| Softening Point. (R&B), ºC | Min. 50 |
| Penetration @25ºC, 0.1 mm 100 gm, 5 sec | 40-60 |
| Tests on residue from thin film oven tests/RTFOT | |
| i) Viscosity ratio at 60ºC | Max. 4.0 |
| ii) Ductility at 25ºC, cm, after thin-film oven test | Min. 25 |
| Specific Gravity @ 27/27 ºC | Min. 1.01 – 1.06 |