Penetration grade bitumen supplied by GLB is pure petroleum grade
bitumen, manufactured from vacuum bottom by passing hot air. The bitumen
supplied by GLB is produced from remain of crude oil after cracking and
removing hydrocarbon. Penetration grade bitumen 80/100 has penetration
between 80~100 desi-millimeter and softening point between 48 ~ 56C. The
penetration grade bitumen 80/100 has a thermoplastic property which is
like as synthetic resin material which gets softer with heating and
hardens when cooled. This grade of bitumen 80/100 has very strong
viscosity compare to other grades.
