GGBFS
Ground Granulated Blast-Furnace Slag — Grade 80 / 100 / 120
Bulk and bagged GGBFS supplied directly from established Chinese steel-mill sources. ASTM C989 / EN 15167-1 compliant. FOB / CIF terms available from major Chinese ports.
Miningsun supplies GGBFS to ready-mix plants, precast manufacturers, cement blenders, and infrastructure contractors across the Middle East, Southeast Asia, Africa, and the Americas. Every shipment is third-party tested with COA and MTC included.
Typical use: 30–70% replacement of Portland cement to improve durability, sulfate resistance, and reduce CO₂ footprint by up to 40%.
EN 15167-1
GB/T 18046
Grade 100
Grade 120
3,000 MT (bulk vessel)
after PO confirmation
Specifications by Grade
Three activity grades aligned with ASTM C989. Grade 100 is the most commonly specified for ready-mix and precast concrete worldwide.
| Property | Grade 80 | Grade 100 | Grade 120 |
|---|---|---|---|
| 7-Day Slag Activity Index (min) | — | 75% | 95% |
| 28-Day Slag Activity Index (min) | 75% | 95% | 115% |
| Specific Surface Area (Blaine, m²/kg) | ≥ 350 | ≥ 400 | ≥ 450 |
| Sulfide Sulfur (S, max) | 2.5% | 2.5% | 2.5% |
| Sulfate (SO₃, max) | 4.0% | 4.0% | 4.0% |
| Loss on Ignition (max) | 3.0% | 3.0% | 3.0% |
| Moisture Content (max) | 1.0% | 1.0% | 1.0% |
| Glass Content (min) | ≥ 85% | ≥ 85% | ≥ 85% |
| Color | Off-white | Off-white | Off-white |
* Typical values from production. Batch-specific COA issued with every shipment.
Performance Benefits
Higher Long-Term Strength
Superior 56- and 90-day compressive strength vs OPC-only mixes.
Sulfate & Chloride Resistance
Critical for marine, coastal, and aggressive groundwater environments.
Lower Heat of Hydration
Reduces thermal cracking risk in mass concrete pours and large foundations.
Up to 40% CO₂ Reduction
50% cement replacement with GGBFS dramatically lowers embodied carbon.
Where Our Customers Use GGBFS
From port construction in the Gulf to high-rise foundations in Southeast Asia — GGBFS is specified wherever durability and sustainability matter.
Marine & Port Infrastructure
Sea walls, breakwaters, harbor foundations, offshore platforms.
Mass Concrete
Dams, raft foundations, nuclear containment, large pours.
Bridges & Highway Works
Decks, piers, abutments exposed to de-icing salts and traffic loads.
Ready-Mix Concrete
Improved workability, finishability, pumpability for commercial projects.
Precast & Prestressed
Smoother finish, reduced efflorescence, consistent architectural color.
Soil Stabilization
Activated GGBFS systems for ground improvement and deep mixing.
Packaging, Ports & Payment
Flexible packaging and incoterms to match your project size and discharge facilities.
Packaging Options
- 25 kg PP / paper bags, palletized & shrink-wrapped
- 1,000 kg / 1,500 kg jumbo bags (FIBC) with PE liner
- Bulk loading directly into vessel holds (3,000+ MT)
- 20' / 40' container loading available
- Custom private-label bagging on request
Loading Ports
- Tianjin / Xingang Port (primary)
- Qingdao Port
- Shanghai Port
- Lianyungang Port
- Bulk vessels and container shipments arranged
Payment Terms
- 30% T/T deposit, 70% balance against B/L copy
- L/C at sight (irrevocable, from prime banks)
- D/P, D/A negotiable for established buyers
- Trial orders accepted to build long-term relationships
Documentation Provided
- Commercial Invoice & Packing List
- Bill of Lading (B/L)
- Certificate of Origin (CO / Form A / FORM E)
- Mill Test Certificate (MTC) & COA per shipment
- SGS / BV / CIQ inspection on request
20+ Years of Export Experience
China is the world's largest producer of iron and steel. Miningsun has direct access to consistent, high-quality slag from established blast-furnace operations — and the export logistics expertise to deliver it on time, anywhere.
- Verified mill sourcing — long-term contracts with major Chinese steel-mill partners
- Third-party tested — ASTM C989 / EN 15167-1 with COA on every shipment
- Stable pricing — quarterly fixed-price contracts available for repeat buyers
- Reliable lead times — 15–25 days from PO to vessel loading
- Multi-port loading — Tianjin, Qingdao, Shanghai, Lianyungang
- Export documentation — full set including CO, MTC, fumigation as required
- Responsive sales team — quotes within 24 hours, English / Chinese / Spanish
Technical & Compliance Documents
Available to qualified buyers upon request — please specify Grade and quantity.
Request a Quote for GGBFS
Tell us your Grade, quantity (MT), destination port, and preferred incoterm (FOB / CIF / CFR). Our export team responds within one business day with pricing, lead time, and full COA samples.
Get a Quote Or email us directly: info@miningsun.com · WhatsApp: +1 814 515 0096