Cutback Bitumen – Medium, Rapid & Slow Curing Grades — Export from Iran
Cutback Bitumen is produced by blending penetration bitumen with hydrocarbon solvents (diluents) such as kerosene, diesel, or naphtha. This reduces viscosity for cold application and delays setting time based on the curing type: MC (Medium Curing), RC (Rapid Curing), and SC (Slow Curing).
We supply high-quality Cutback Bitumen from major Iranian refineries, available in a full range of grades including MC30, MC70, MC250, MC800, and MC3000, as well as RC and SC types. Ideal for cold mix asphalt, tack coats, prime coats, and road maintenance in regions with limited hot-mix facilities.
Note: “MC” stands for Medium Curing, where kerosene is used as diluent. “RC” (Rapid) uses light naphtha; “SC” (Slow) uses heavier oils. Higher numbers (e.g., MC3000) indicate higher viscosity.
Technical Specifications (ASTM D2026, D2027, D2028)
| Property | Test Method | MC30 | MC70 | MC250 | MC800 | MC3000 |
|---|---|---|---|---|---|---|
| Kinematic Viscosity at 60°C (cSt) | ASTM D2170 | 30–60 | 70–140 | 250–500 | 800–1600 | 3000–6000 |
| Penetration at 25°C (0.1 mm) | ASTM D5 | 120–250 | 120–300 | 120–300 | 120–300 | 120–300 |
| Flash Point (Tag, °C) | ASTM D56 | ≥ 38 | ≥ 38 | ≥ 66 | ≥ 93 | ≥ 107 |
| Residue by Distillation (%) | ASTM D2026 | ≥ 55 | ≥ 55 | ≥ 55 | ≥ 55 | ≥ 55 |
| Residue Penetration (0.1 mm) | ASTM D5 | 100–160 | 80–130 | 60–100 | 50–80 | 40–70 |
| Residue Softening Point (°C) | ASTM D36 | 40–50 | 42–52 | 45–55 | 48–58 | 50–60 |
| Curing Type | — | MC | MC | MC | MC | MC |
Key Notes
- MC (Medium Curing): Uses kerosene as diluent; moderate evaporation rate.
- RC (Rapid Curing): Uses light naphtha; fast curing for quick repairs.
- SC (Slow Curing): Uses diesel or gas oil; slower evaporation for deep penetration.
- Viscosity Grades: MC30 (lowest), MC3000 (highest) — selected based on climate and application.
- All residues meet standard bitumen specifications after curing.
- Pre-shipment inspection by SGS included for every shipment.
Applications
- Tack Coats: Bonding layer between asphalt layers (MC70, MC250)
- Prime Coats: Sealing granular bases before asphalt (SC, MC30)
- Cold Mix Asphalt: Road patching and maintenance (MC800, MC3000)
- Surface Dressing: Chip sealing in cold weather (RC, MC types)
- Road Rehabilitation: In areas with limited hot-mix plants
- Dust Control: On unpaved roads and construction sites (SC types)
Packaging & Export Logistics
- Steel Drums: 180–200 kg per drum (leak-proof, stackable)
- IBC Tanks: 1000 kg (1 MT) intermediate bulk containers
- Bulk: In heated or insulated tankers (marine, road, or rail)
- Loading Ports: Bandar Abbas, Kharg Island, Imam Khomeini Port (Iran)
- Export Capacity: Up to 20,000 metric tons per month
- Delivery Terms: FOB, CFR, FCA (flexible based on buyer’s request)
- Target Markets: Africa, Middle East, South Asia, CIS, Latin America
Why Choose Our Cutback Bitumen?
- Sourced from high-quality Iranian bitumen and refined diluents
- Fully compliant with ASTM D2026 (MC), D2027 (RC), D2028 (SC)
- Available in full range: MC30 to MC3000 and RC/SC types
- Stable formulation with consistent residue properties
- Full documentation: CoA, Certificate of Origin, SGS report
- Competitive pricing with reliable supply for long-term contracts
Certifications
- ISO 9001 Certified Supply Chain
- Pre-shipment inspection by SGS (standard)
- Batch-specific quality reports provided
Required: Company profile, destination port, required grades (MC/RC/SC), and monthly volume (MT).