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.
🛣️ Janis Group Cutback Bitumen Capability: We facilitate supply of all MC, RC, and SC grades from leading Iranian refineries, with full ASTM D2026/D2027/D2028 compliance, SGS pre-shipment inspection, and flexible logistics via steel drums or heated bulk tankers — serving road contractors and ministries of transport across Africa, Asia, and CIS markets.
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 |
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)
Which Cutback Type Fits Your Project?
MC (Medium Curing)
Diluent: Kerosene — moderate evaporation rate
Choose this if: You need versatility across most applications — tack coats, prime coats, and general road maintenance in moderate climates.
Typical buyers: Road contractors, municipalities, asphalt producers with standard spraying equipment.
RC (Rapid Curing)
Diluent: Light naphtha — fast evaporation
Choose this if: Your project needs quick reopening — emergency pothole repairs, surface dressing where traffic must resume within hours.
Typical buyers: Highway maintenance agencies, urban road repair contractors, emergency response teams.
SC (Slow Curing)
Diluent: Diesel / gas oil — slow evaporation
Choose this if: You need deep penetration into granular bases or dust control on unpaved roads, especially in cold or dry climates.
Typical buyers: Prime coat specialists, mining road operators, rural road authorities.
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.
Frequently Asked Questions (FAQ)
MC uses kerosene (moderate cure), RC uses light naphtha (fast cure), and SC uses diesel/gas oil (slow cure). The number indicates viscosity at 60°C in cSt.
Prime coat: SC or MC30 (deep penetration). Tack coat: MC70 or MC250 (optimal adhesion without bleeding).
Cutback works better in cold/dry climates and has 6–12 month shelf life. Emulsions are preferred in environmentally sensitive areas due to lower VOC emissions.
180 MT (ten 20ft container with 100 drums of 180 kg). Heated bulk tankers available for larger orders. Mixed-grade orders accepted in the same shipment.
MC800 or MC3000 for workability at low temperatures. RC for rapid emergency repairs. SC for very cold regions where slow curing prevents premature setting.
Packaging & Export Logistics
- Steel Drums: 180–200 kg per drum (leak-proof, stackable)
- Jumbo Bags: 800–1000 kg (for cold-weather applications)
- Flexi-Bags: 18–22 MT per 20ft container (ISO compatible, multi-layered, leak-proof)
- Bulk: In heated or insulated tankers (marine, road, or rail)
- Southern Loading Ports: Bandar Abbas, Kharg Island, Imam Khomeini Port (Iran)
- Northern Loading Ports: Amirabad, Noshahr, Anzali Port (for CIS, Russia, and Caspian markets)
- Export Capacity: Up to 5,000 metric tons per month
- Delivery Terms: FOB, CFR, FCA, CPT (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).