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As a creative and agile Iranian holding in the bitumen industry, DEJPA is among the first three producers in Iran with an export market, focusing on the field of bitumen and mulch. It is also known as a leading company in the field of technical and engineering services in the oil refining, bitumen and mulch industry, and it has made successful entries in the field of oil refining as business opportunities for the coming years.
Taking the lead in gaining market share in the current chain through increasing productivity, intelligence and innovation in supply, production and sales methods, as well as entering the oil refining chain in order to learn and build strategic capacity for the future of business.
43 YEARS OF COUNTINUES ACTIVITY IN BITUMEN PRODUCTION.
 
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Bitumen Temperature Guide: Mixing, Pumping and Asphalt Compaction

Bitumen Temperature Guide: Mixing, Pumping and Asphalt Compaction

Bitumen temperature affects viscosity, pumping, aggregate coating, asphalt mixing and compaction. However, no single temperature is suitable for every binder or project. This technical guide explains how heating and handling temperatures are determined, why conventional and polymer-modified bitumen may require different approaches, and how temperature control helps protect binder quality and asphalt performance.
October 24 2026 More
What Determines Bitumen Prices? Key Factors Affecting Bitumen Price per Ton

What Determines Bitumen Prices? Key Factors Affecting Bitumen Price per Ton

What determines bitumen prices? Learn how feedstock costs, crude and fuel oil markets, supply and demand, packaging, freight, Incoterms, exchange rates and specifications affect bitumen price per ton.
October 18 2026 More
Bitumen for Hot Climates: Which Grade Should You Choose?

Bitumen for Hot Climates: Which Grade Should You Choose?

Bitumen selection in hot climates depends on more than air temperature. Pavement temperature, traffic loading, asphalt mixture design and project specifications all affect the required binder. This guide compares 60/70, VG30, VG40, PG and PMB and explains how to choose the right bitumen for high-temperature road conditions.
October 10 2026 More