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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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How Should Bitumen Be Stored and Transported? A Guide to Temperature Control, Tanks, Contamination Prevention and Quality Protection

How Should Bitumen Be Stored and Transported? A Guide to Temperature Control, Tanks, Contamination Prevention and Quality Protection

Proper bitumen storage and transportation are essential for preserving product quality from production to final delivery. Excessive heating, prolonged storage at high temperature, contaminated tanks, water ingress, grade mixing, and poor sampling can affect viscosity, stiffness, uniformity, safety, and final performance. This article explains how to control bitumen storage temperature, prevent contamination and grade mixing, manage transport by tanker, review technical documents, and protect product quality before loading and upon delivery.
How to Read a Bitumen Certificate of Analysis (COA): A Practical Guide to Specifications, Standards, and Discrepancies

How to Read a Bitumen Certificate of Analysis (COA): A Practical Guide to Specifications, Standards, and Discrepancies

A bitumen Certificate of Analysis should be reviewed beyond a few apparently acceptable numbers. This guide explains how to verify product and batch identity, test methods, units, specification limits, actual results, laboratory information, and internal consistency while distinguishing a COA from a TDS and SDS.
What Are the Main Bitumen Quality Control Tests? Penetration, Softening Point, Ductility, Viscosity, and Flash Point

What Are the Main Bitumen Quality Control Tests? Penetration, Softening Point, Ductility, Viscosity, and Flash Point

Bitumen quality cannot be evaluated only by its grade name. Penetration, softening point, ductility, viscosity, flash point, solubility, and aging tests each examine a different aspect of binder consistency, thermal behavior, safety, purity, and durability. This article explains how these tests are performed, interpreted, and reviewed in a bitumen Certificate of Analysis.