bitumen,asphalt,tar,construction Bitumen 40/50 construction
middle melting & middle penetration
Bitumen Penetration 40-50 is pure petroleum grade bitumen, manufactured from vacuum bottom by passing hot air. The bitumen supplied by jahanghirpars is produced from remain of crude oil after cracking and removing hydrocarbon. Penetration grade bitumen 30/40 has penetration between 40~50 millimeter and softening point between 52 ~ 60 C. The penetration grade bitumen 30/40 has a thermoplastic property which is like as synthetic resin material which gets softer with heating and hardens when cooled.
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