PETRO TAR CO. is a leading manufacturer and global supplier of premium Oxidized Bitumen (Blown Asphalt / Air-Blown Bitumen), offering a comprehensive range of grades for waterproofing, roofing, construction, industrial, and infrastructure applications.
Manufactured from carefully selected petroleum bitumen, our Oxidized Bitumen is designed to meet the technical requirements of manufacturers, contractors, and industrial users across a wide range of industries. Every grade is produced under controlled manufacturing conditions to ensure consistent quality, reliable performance, and consistent quality, reliable performance, and compliance with relevant ASTM standards for international markets.
✔ 5,000 MT Monthly Capacity
✔ Export to 50+ Countries
✔ Flexible Export Packaging
✔ ASTM Quality Control
Oxidized Bitumen, also known as Blown Bitumen, Oxidized Asphalt, or Blown Asphalt, is a high-performance industrial bitumen manufactured from selected petroleum bitumen through a controlled air-blowing process.
During production, hot penetration-grade bitumen is exposed to a controlled flow of air under carefully regulated temperature and process conditions. This controlled oxidation modifies the molecular structure of the bitumen, resulting in a higher softening point, lower penetration value, increased hardness, and enhanced resistance to heat, water, chemicals, and weathering.
Unlike conventional penetration-grade bitumen, which is primarily used for road construction and asphalt paving, Oxidized Bitumen is specifically developed for industrial and construction applications requiring superior thermal stability, dimensional stability, waterproofing performance, strong adhesion, and long-term performance.
These enhanced properties make it an ideal material for roofing systems, waterproofing membranes, industrial mastics, joint sealants, protective coatings, pipe coatings, electrical insulation, and many other specialized applications.
At PETRO TAR CO., every production batch is manufactured using carefully selected raw materials and a precisely controlled air-blowing process, ensuring consistent quality and compliance with relevant ASTM standards
Property | Description |
Product Name | Oxidized Bitumen |
Alternative Names | Blown Bitumen, Blown Asphalt, Oxidized Asphalt, Air-Blown Bitumen |
Product Type | Air-Blown Petroleum Bitumen |
Material | Oxidized Petroleum Bitumen |
Appearance | Black Solid |
Odor | Mild Petroleum Odor |
CAS Number | 64742-93-4 |
HS Code | 2713.20.00 |
UN Number | Not Classified as Dangerous Goods for Transport |
Country of Origin | Iran |
Manufacturer | PETRO TAR CO. |
Brand | PETRO TAR CO. |
Available Grades | 10/20, 75/25, 85/25, 85/40, 90/10, 90/15, 90/40, 95/25, 105/15, 105/25, 110/30, 115/15 |
Standards | Manufactured in accordance with relevant ASTM test methods |
Oxidized Bitumen is marketed and recognized under various names across international markets. Depending on regional terminology, industry practices, and technical standards, the same product may be referred to by different names. The following list includes the most common names used worldwide.
Oxidized Bitumen / Oxidized Asphalt
Blown Bitumen /Asphalt
Air-Blown Bitumen /Asphalt
Roofing Bitumen / Asphalt
Waterproofing Bitumen /Asphalt
Industrial Bitumen /Asphalt
Hard Bitumen/Asphalt
Solid Bitumen/Asphalt
Roofing Grade Bitumen /Asphalt
Membrane Grade Bitumen/Asphalt
R Grade Bitumen (R85/25, R90/15, R115/15)
United Kingdom
• Oxidized Bitumen/ • Blown Bitumen
United States
• Oxidized Bitumen / • Blown Asphalt
France
• Bitume Oxydé
Italy
• Bitume Ossidato
Spain
• Betún Oxidado
Portugal
• Betume Oxidado
Germany & Austria
• Oxidiertes Bitumen
Netherlands
• Geoxideerd Bitumen
Romania
• Bitum Oxidat
Poland
• Bitum Utleniony
Czech Republic
• Oxidovaný Bitumen
Brazil
• Asfalto Oxidado
Turkey
• Okside Bitüm
Saudi Arabia, UAE & Arabic-speaking Countries
• البيتومين المؤكسد
Iran
• قیر اکسیده
Russia
• Окисленный Битум
Ukraine
• Окислений Бітум
Azerbaijan
• Oksidləşdirilmiş Bitum
Uzbekistan
• Oksidlangan Bitum
Kazakhstan
• Тотыққан Битум
China
• 氧化沥青
Japan
• 酸化アスファルト
South Korea
• 산화 아스팔트
Vietnam
• Bitum Oxy Hóa
Indonesia
• Aspal Oksidasi
Malaysia
• Bitumen Teroksida
Thailand
• ยางมะตอยออกซิไดซ์
Australia & New Zealand
• Blown Bitumen
International Technical Literature
• Air-Blown Bitumen
The production of Oxidized Bitumen begins with carefully selected penetration-grade petroleum bitumen. The material is heated to the required process temperature before a controlled flow of air is introduced into the reactor. During oxidation, oxygen reacts with the hydrocarbon molecules, increasing molecular weight and modifying the physical characteristics of the bitumen to achieve the desired performance.
Critical production parameters, including temperature, airflow, oxidation time, and reaction conditions, are continuously monitored to ensure that each grade achieves the required softening point, penetration value, and performance characteristics.
Every production batch undergoes comprehensive laboratory testing and quality control procedures in accordance with relevant ASTM standards before shipment
Oxidized Bitumen is supplied as a solid black material with a homogeneous structure and a smooth surface. Depending on the grade and ambient temperature, its surface may appear either glossy or slightly matte. At normal temperatures, it remains hard and rigid, softening only when heated during industrial processing. As a water-insoluble petroleum product, it offers excellent handling stability during storage, transportation, and manufacturing.
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Although both Oxidized Bitumen and Penetration Grade Bitumen are produced from petroleum bitumen, they are engineered for different applications.
Penetration Grade Bitumen is primarily used in road construction and asphalt paving because it provides the flexibility and workability required to withstand traffic loads. In contrast, Oxidized Bitumen is manufactured through a controlled air-blowing process that modifies its molecular structure, producing a harder material with a higher softening point, lower penetration value, and improved resistance to heat and deformation.
As a result, Oxidized Bitumen maintains its dimensional stability and mechanical properties even under prolonged exposure to elevated temperatures, whereas conventional Penetration Grade Bitumen becomes softer and more susceptible to flow.
These characteristics make Oxidized Bitumen the preferred choice for industrial and construction applications where thermal stability, waterproofing performance, durability, and long-term reliability are essential
Oxidized Bitumen offers a unique combination of high thermal resistance, dimensional stability, adhesion, and durability due to its controlled air-blowing process. These enhanced performance characteristics make it suitable for demanding waterproofing, roofing, industrial, and construction applications where long-term reliability, consistent performance, and superior material stability are required.
Performance Characteristic | Key Advantage |
High Softening Point | Provides excellent resistance to elevated temperatures and helps prevent deformation during service conditions. |
Excellent Thermal Stability | Maintains consistent physical properties across a wide temperature range and under demanding operating conditions. |
Superior Dimensional Stability | Minimizes flow, shrinkage, and deformation, ensuring long-term structural integrity and reliable performance. |
Controlled Penetration Value | Provides the required hardness, rigidity, and mechanical strength for specific industrial applications. |
Strong Adhesion | Ensures reliable bonding with concrete, metal, roofing materials, and various industrial substrates. |
Superior Waterproofing Performance | Creates a durable moisture barrier for roofing systems, waterproofing membranes, and protective applications. |
Chemical & Weather Resistance | Provides enhanced durability against moisture, oxidation, UV exposure, and environmental conditions. |
Long Service Life | Reduces maintenance requirements and improves the durability and reliability of finished products. |
Electrical Insulation Properties | Supports applications requiring moisture resistance, electrical protection, and insulation performance. |
Wide Range of Grades | Enables customers to select the most suitable grade according to processing conditions, service temperature, and application requirements. |
Oxidized Bitumen grades are identified according to two important physical properties: Softening Point and Penetration Value. The grade designation consists of two numbers separated by a slash (/), providing a simple and internationally recognized way to identify the product’s physical characteristics and intended applications.
The first number represents the approximate Softening Point in degrees Celsius (°C), indicating the temperature at which the bitumen begins to soften under standardized test conditions. Generally, a higher softening point means better resistance to elevated temperatures and improved dimensional stability.
The second number represents the Penetration Value in tenths of a millimeter (dmm), which indicates the hardness or consistency of the bitumen. Lower penetration values represent harder grades with greater resistance to deformation, while higher penetration values indicate softer materials with increased flexibility.
For example, Oxidized Bitumen 115/15 has an approximate Softening Point of 115°C and a Penetration Value of 15 dmm. This combination provides excellent heat resistance, high hardness, and outstanding dimensional stability, making it one of the most widely used grades for manufacturing waterproofing membranes, roofing systems, industrial mastics, pipe coatings, and protective coatings.
PETRO TAR CO. offers a complete portfolio of Oxidized Bitumen grades engineered to satisfy the performance requirements of waterproofing, roofing, industrial, and infrastructure applications worldwide to meet the diverse requirements of the construction, waterproofing, roofing, industrial, and infrastructure sectors. Each grade is produced under strict quality control using carefully selected raw materials and advanced air-blowing technology to ensure consistent physical properties and reliable performance.
Our Oxidized Bitumen grades are classified according to their Softening Point and Penetration Value, enabling customers to select the most suitable product for their specific application, operating temperature, and performance requirements.
Whether the application requires superior heat resistance for waterproofing membranes, excellent adhesion for industrial mastics, or Long Service Life for pipe coatings and protective systems, PETRO TAR CO. offers a suitable Oxidized Bitumen grade manufactured in accordance with international quality standards.
Every Oxidized Bitumen grade is engineered to meet specific processing conditions and performance requirements. Selecting the appropriate grade depends on the required softening point, penetration value, service temperature, manufacturing process, and end-use application
Grade | Recommended Applications |
Oxidized Bitumen 115/15 | Waterproofing membranes, roofing systems, APP & SBS membranes, pipe coating, industrial protective coatings, cable compounds, electrical insulation, high-temperature industrial applications. |
Oxidized Bitumen 110/30 | Electrical insulation, cable filling compounds, cable joint compounds, industrial coatings, battery insulation compounds, protective coatings. |
Oxidized Bitumen 105/25 | Joint fillers, industrial sealants, waterproofing compounds, construction applications, industrial adhesives, anti-corrosion coatings. |
Oxidized Bitumen 105/15 | Pipe coating, anti-corrosion systems, roofing systems, waterproofing applications, industrial coatings, metal protection. |
Oxidized Bitumen 95/25 | Premium roofing membranes, waterproofing systems, APP & SBS membranes, industrial mastics, anti-corrosion coatings, industrial paints, hot-climate roofing applications. |
Oxidized Bitumen 90/40 | Industrial coatings, pipe coating, insulation materials, hydraulic structures, protective compounds, industrial paints, textile processing, rubber & plastic products. |
Oxidized Bitumen 90/15 | Waterproofing membranes, roofing products, construction chemicals, sealants, industrial paints, anti-corrosion coatings, rubber products, textile processing, paper & board (bitumen-laminated paper, roofing felt & cellulose impregnation). |
Oxidized Bitumen 90/10 | High-temperature waterproofing systems, heavy-duty industrial processing, oil & gas applications, specialty coatings, pipeline protection. |
Oxidized Bitumen 85/40 | Industrial mastics, bituminous sealants, construction adhesives, waterproofing compounds, flexible waterproofing systems. |
Oxidized Bitumen 85/25 | APP & SBS waterproofing membranes, roofing felts, bituminous waterproofing sheets, industrial paints, varnishes, anti-corrosion coatings, paper & board (bitumen-laminated paper, roofing felt & cellulose impregnation), textile processing, rubber & tire manufacturing, plastic products, artificial turf backing, automotive underbody coatings (undercoating), construction chemicals, adhesives, crack repair compounds. |
Oxidized Bitumen 75/25 | Roofing products, waterproofing compounds, pipe coating, industrial paints, mastics, moisture barriers, automotive underbody coatings, textile processing and chemical industry. |
Oxidized Bitumen 10/20 | Industrial insulation, corrosion protection, specialty industrial coatings, engineered applications, customized industrial formulations. |
The most commonly used Oxidized Bitumen grades worldwide are 85/25, 90/15, 90/40, 95/25, 105/15, 105/25, and 115/15. Additional grades are available for specialized industrial applications, with selection based on technical requirements, manufacturing processes, service conditions, and desired performance characteristics. The table below provides general recommendations for the typical applications of each grade.
The appropriate Oxidized Bitumen grade should always be selected according to the specific technical requirements of the intended application. For detailed product specifications, packaging options, and the latest Technical Data Sheet (TDS), please refer to the dedicated product page of each grade.
|
Properties |
OXIDIZED BITUMEN GRADES |
||||||||||
|
R 115/15 |
R 110/30 |
R 105/15 |
R 105/25 |
R 95/25 |
R 90/40 |
R 90/15 |
R 90/10 |
R 85/40 |
R 85/25 |
R 75/25 |
|
|
Softening Point (°C) |
110–120 |
105–115 |
100–110 |
95-105 |
90-100 |
85–95 |
95-105 |
105-120 |
80-90 |
85-95 |
90-100 |
|
Penetration @25°C (dmm) |
10–20 |
25–35 |
10–15 |
20–30 |
20-30 |
35–45 |
10–20 |
5–15 |
35-45 |
20–30 |
20–30 |
|
Ductility @25°C (cm) |
<3 |
<3 |
<3 |
<3 |
<3 |
<3 |
<3 |
<3 |
3 |
<3 |
<3 |
|
Loss on Heating (%) |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
<0.2 |
|
Flash Point (°C) |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
>250 |
|
Specific gravity @25°C |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
1.05 Approx |
|
Solubility in CS₂ (%) |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
99 Min |
|
Hardness Level |
Very Hard / Highest softening point |
Semi Hard |
Soft |
HARD/High Softening point |
Ultra hard |
Soft |
Semi Soft |
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Thanks to its excellent thermal stability, high softening point, strong adhesion, superior waterproofing performance, and Excellent Stability, Oxidized Bitumen has become an essential material across numerous industrial and construction sectors. Available in a wide range of grades, it can be selected to meet different operating conditions, manufacturing processes, and performance requirements.
One of the largest applications of Oxidized Bitumen is in waterproofing and roofing systems, where long-term protection against moisture, heat, and weather exposure is essential. Its dimensional stability and excellent waterproofing performance make it a preferred material for high-quality roofing products.
Marine and offshore environments require materials capable of resisting continuous moisture, saltwater, and severe weather conditions. Oxidized Bitumen provides durable protection for marine infrastructure and coastal engineering projects.
Beyond conventional construction and industrial uses, Oxidized Bitumen is also employed in a variety of specialized manufacturing and engineering applications where reliable long-term performance is required.
The durability, adhesion, and resistance to environmental conditions make Oxidized Bitumen a reliable material for civil engineering and infrastructure projects requiring long-term structural protection and waterproofing.
Selected grades provide excellent electrical insulation properties and moisture resistance, making them suitable for cable manufacturing and various electrical protection applications.
The automotive industry utilizes Oxidized Bitumen in specialized applications requiring sound insulation, vibration damping, corrosion protection, and long-term durability.
Its durability and environmental resistance make Oxidized Bitumen suitable for products used in traffic management and transportation infrastructure.
Its excellent resistance to moisture, chemicals, and weathering makes Oxidized Bitumen an effective protective material for steel structures, pipelines, storage facilities, and industrial equipment operating in demanding environments.
Controlled penetration, reliable adhesion, and long-term stability make Oxidized Bitumen an important raw material for manufacturing industrial sealants, mastics, and construction adhesives.
Waterproofing Adhesives
A wide variety of industrial products incorporate Oxidized Bitumen because of its durability, process stability, and compatibility with different manufacturing technologies.
The applications listed above represent some of the most common uses of Oxidized Bitumen and are provided for general guidance only. Thanks to its wide range of grades and versatile performance characteristics, Oxidized Bitumen is also used in many other industrial and specialized applications worldwide.
If your application is not listed above, PETRO TAR CO. will be pleased to recommend the most suitable grade based on your production process, operating conditions, and technical performance requirements
PETRO TAR CO. provides a comprehensive range of export-standard packaging solutions to ensure safe storage, efficient handling, and reliable international transportation. Packaging can be tailored to meet specific customer requirements, shipping methods, and destination markets
Packaging Type | Description |
Meltable Polyamide Bags (25 Kg) | Heat-resistant, meltable bags that can be directly fed into the production process without opening the bag. Each bag is additionally protected with a black or white outer protective bag to prevent damage during storage, handling, and international transportation. |
Kraft Paper Bags (25 Kg) | Durable multi-layer kraft paper bags suitable for manual handling, storage, and containerized export shipments. Each bag is also provided with a black or white outer protective bag to ensure additional protection during handling and transportation. |
Carton Boxes (20 & 25 Kg) | Strong corrugated cartons designed for palletized export shipments, easy handling, and clean warehouse storage. |
Other Export Packaging Options | Additional standard packaging types and customized package sizes are available upon customer request |
PETRO TAR CO. manufactures 99.5% pure Oxidized Bitumen without adding Gilsonite or other mineral fillers. Using carefully selected raw materials, advanced production technology, and rigorous laboratory testing, the company delivers oxidized bitumen with consistent quality, stable performance, and delivers consistent product quality, predictable processing behavior, and reliable long-term performance..
With a monthly production capacity of 5,000 MT, PETRO TAR CO. supplies customers in more than 50 countries, serving industries throughout Asia, the Middle East, Africa, Europe, and South America. Every production batch is tested in accordance with ASTM standards to ensure that customers receive products with consistent physical and chemical properties suitable for demanding industrial applications
PETRO TAR CO. manufactures a complete range of Oxidized Bitumen grades for industrial and construction applications. Consistent product quality, a variety of packaging options, comprehensive technical documentation, and export support help customers confidently select and source the most suitable grade for their production processes and project requirements.
99.5% Pure Oxidized Bitumen (Gilsonite-Free)
Complete Range of Oxidized Bitumen Grades
Monthly Production Capacity of 5,000 MT
Consistent Quality Tested According to ASTM Standards
Export Experience to More Than 50 Countries
Reliable Delivery and Export Documentation
Flexible Packaging Solutions
Technical Support for Product Selection
Competitive Pricing for Global Markets
Professional Customer Service
At PETRO TAR CO., quality is integrated into every stage of the manufacturing process, from raw material selection to final packaging. Every production batch undergoes comprehensive laboratory testing to verify compliance with relevant ASTM standards before shipment
To support international customers, PETRO TAR CO. provides professional export services, including technical documentation, flexible packaging options, and complete shipping documents. Our team works closely with customers to ensure accurate order processing, reliable production planning, and timely delivery.
Strict quality control throughout the entire production process
Batch testing in accordance with relevant ASTM standards
Certificate of Analysis (COA) and Technical Data Sheet (TDS) available upon request
Technical support in selecting the appropriate grade and packaging
Flexible export-standard packaging tailored to customer requirements
Complete export documentation for international shipments
Reliable production planning and on-time delivery
Looking for the most suitable Oxidized Bitumen grade for your application? Share your application, required grade, packaging preference, quantity, and destination with our sales team. We will recommend the most suitable product and provide a tailored technical and commercial quotation based on your project requirements.
