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Ayhan Holding is a leading bitumen supplier based in Tehran, Iran. We are well-known for our exceptional quality bitumen products, which are the result of many years of experience in the industry. Our team of experts is committed to providing the highest level of service and top-notch products that meet the needs of our customers.

Penetration rate bitumen is graded based on penetration and softening point tests. This table describes the physical properties of penetration-grade bitumen based on European standards. Penetration-grade bitumen is mainly used in road construction. During the last two decades of the 20th century, most road construction projects showed an inclination for solid bitumen which results in more effective asphalt.

Ayhan Holding
is connected with more than 100 refineries and it is possible to visit them.


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