VG
In the classification based on the viscosity of bitumens according to the value of absolute viscosity at 60°C or kinematic viscosity at 135°C, the classification and direction of each of them have been determined by specific technical criteria. Absolute viscosity is expressed in poise and kinematic viscosity is expressed in centistokes. Classification and specifications of pure bitumen are reported in AASHTO-M226 and ASTM-D3381 standards
tell: +989102246003
refineryoils@gmail.com
tell: +989102246003
Performance Grade (PG) Bitumen
The performance grade of bitumen or PG is the latest standard of the world.This method is a relatively new method that classifies bitumen based on the temperature conditions of different regions. In this method, the mechanical properties of bitumen are examined from completely scientific methods. In this method, a temperature range is assigned to the bitumen, and the consumer can choose the appropriate bitumen according to his desired location. Today, for polymer modified bitumen and pure bitumen according to the standard, a performance grade or PG is defined according to temperature and environmental conditions. The wider range or range of PG of a compound means more desirable properties and higher resistance. By launching and installing the most advanced SHARP devices, Refinery Oil’s Company is able to offer bitumen to its customers in a new functional way.