Bitumen (VG40)
Bitumen VG40 Supplier
As a specialized bitumen exporter and supplier, Nexoil supplies Bitumen VG40, the hardest and most demanding grade within the viscosity classification system. VG40 is engineered specifically for pavements subject to sustained heavy loading, elevated service temperatures, and traffic conditions where softer binders would rut prematurely — making grade selection here less about cost and more about long-term pavement survival.
Engineering Properties of Bitumen VG40
VG40’s minimum viscosity requirement corresponds approximately to PEN 30/40 in penetration terms, placing it among the stiffest commercially available paving binders worldwide. This elevated stiffness directly improves resistance to rutting and permanent deformation under repeated heavy wheel loading, but it comes with a trade-off: VG40 requires tighter control over mixing and compaction temperatures to remain workable, since its higher viscosity reduces the margin for error during hot-mix production.
What most buyers don’t realize is that VG40 is rarely a “natural” output of straightforward vacuum distillation the way VG10 or VG30 often are. Reaching VG40’s viscosity threshold frequently requires air-blowing the vacuum residue — a controlled oxidation process that raises stiffness beyond what distillation alone achieves — or blending with a harder residual stream. This production detail has real commercial consequences: air-blown bitumen ages differently over a pavement’s service life compared to straight-run bitumen, even when both meet the same initial specification sheet.
| Specification | Unit | Value | Test Method |
| Absolute Viscosity, at 60 ◦C | Poise | Min 3200 | ASTM D4402 |
| Kinematic Viscosity, at 135 ◦C | CST | Min 400 | ASTM D2170 |
| Flash Point | ◦C | Min 240 | ASTM D93 |
| Solubility in Trichloroethylene | %WT | Min 99 | ASTM D2042 |
| Penetration Value, at 25 ◦C | 0.1mm | 35-50 | ASTM D5 |
| Softening Point | ◦C | Min 48 | ASTM D36 |
| Thin-Film Oven Test (TFOT) | |||
| Viscosity Ratio, at 60 ◦C | ◦C | Max 4 | ASTM D4402 |
| Ductility at 25 ◦C | Cm | Min 25 | ASTM D113 |
Heavy-Duty Pavement Applications
Nexoil supplies Bitumen VG40 in bulk and drum shipments for demanding infrastructure applications, including:
- Expressways and national highways carrying sustained heavy commercial traffic
- Airport runways and taxiways subject to repeated, concentrated aircraft wheel loading
- Port, container terminal, and industrial pavements under heavy vehicle loading
- Road infrastructure in high-temperature climatic zones where softer grades would deform
- Projects where resistance to rutting is a primary design and cost consideration over the pavement’s service life.
Production & Grade Classification
As a bitumen supplier with access to advanced refinery processing capability, Nexoil sources VG40 through its regional network across the UAE, Oman, Iraq and Türkiye, and confirms the production method — straight-run versus air-blown — for every shipment. This transparency matters because not every refinery operates air-blowing units, and those that do allocate limited capacity to VG40 production, which affects both availability and pricing relative to softer grades.
Because of this variability, Nexoil verifies each VG40 export through comprehensive laboratory testing covering viscosity, penetration, softening point, and aging-related parameters, rather than relying solely on the declared grade designation.
Markets & International Demand
As an established bitumen exporter, Nexoil supplies VG40 to markets with heavy-duty infrastructure requirements, including major highway, expressway, and airport development projects across the Middle East, South Asia, and selected African markets — regions where sustained high traffic loads, elevated ambient temperatures, or both justify VG40’s higher unit cost relative to VG30.
Buyers in these markets typically evaluate VG40 not purely on price, but on total lifecycle cost: the added expense of the harder binder is weighed against reduced maintenance frequency and extended pavement service life under demanding conditions.
Quality Assurance & Shipment Documentation
Every Nexoil VG40 shipment can be supported by a Certificate of Analysis (COA), including confirmation of production method where relevant to the buyer’s specification. As your bitumen supplier, Nexoil coordinates SGS inspection, Pre-Export Verification of Conformity (PVoC), and Certificate of Conformity (CoC) procedures according to destination import requirements, ensuring documentation aligns with the regulatory expectations of the receiving market.
Get a Quote for Bitumen VG40
For current Bitumen VG40 requirements, contact Nexoil — your bitumen exporter and supplier — with your destination, quantity, and project specification (including expected traffic load and climate conditions) to receive a tailored quotation together with the relevant export documentation.


