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Wholesale G654 Sesame Black Granite Polished Slabs Suppliers, Factories
Product Description
Products Information
1. Mineral Sources
Supply Advantages: Continuous ore veins with super-large reserves; G654 serves as the internationally recognised benchmark. Stable annual production capacity enables fulfilment of overseas project orders exceeding one million square metres. Secondary mining sites offer superior cost-effectiveness, ideal for large-scale municipal projects.
- Logistical Convenience: Proximity to Qingdao and Rizhao ports facilitates direct container shipping to major Southeast Asian, Middle Eastern, European and American ports with efficient customs clearance.
- Export Mainstay: Fujian-sourced G654 features uniform grain size and consistent colouration, making it the premier choice for high-end projects.
2. Aesthetic Characteristics
- Base Colour: Deep grey to pure black with uniform overall hue, minimal colour variation, and strong batch consistency.
- Texture: Characteristic sesame-like speckles with fine, uniformly distributed white/silver-grey mineral grains. Free from large blemishes or irregular patterns, exuding a dignified and substantial texture. White specks appear more translucent on polished surfaces, while flame-finished/bush-hammered surfaces exhibit stronger granular texture.
- Comparison with G603 (Sesame White): G654 features a deep grey-black base with white sesame specks, whereas G603 has a light white base with small black specks; G654 offers superior hardness and stain resistance, suitable for heavy-duty outdoor applications; G603 provides greater brightness, ideal for high-end interior finishes.
- Gloss: Polished finish achieves ≥85° gloss, presenting a deep, mirror-like sheen; flamed/textured surfaces exhibit uniform matt finish, offering slip resistance without glare, and demonstrating dirt-resistant, easy-clean properties.
3. Physical Properties
| Parameters | Typical values | Engineering Value |
|---|---|---|
| Density | 2.67–2.73 g/cm³ | Dense structure minimises deformation during transportation, hoisting, and dry-hanging |
| Water absorption rate | ≤0.17% | Exceptionally low water absorption with superior freeze resistance and seawater corrosion resistance, ideal for coastal and frigid northern regions |
| Compressive strength | 210–218 MPa | Suitable for heavy-duty roads, airport runways, port terminals, and elevated bridge surfaces |
| Flexural strength | 16–26.6 MPa | High safety factor in dry-hanging applications with minimal fracture risk, suitable for high-rise exterior walls |
| Mohs hardness | 6.5–7 | High abrasion resistance ensures long-term use without sanding in high-traffic plazas, high-speed rail stations, and car parks |
| Acid/alkali resistance/weather resistance | Excellent (compliant with ASTM C615, CE EN 1341, SNI standards) | Retains colour and integrity for 30 years outdoors, withstanding Middle Eastern UV radiation and Southeast Asian acid rain |
| Radioactivity | Class A stone (non-radioactive) | Suitable for all locations (interior/children's areas/food zones) |
Core Strengths
Global Recognition
Exceptionally high global engineering recognition: G654 is the designated high-frequency variety in international tenders, requiring no additional client education; dark-toned stone is the preferred choice for municipal projects across the Middle East, Southeast Asia, Europe and America.
Batch Consistency
Minimal colour variation and consistent delivery: Colour difference within the same quarry and batch ≤ Grade 2, with complimentary sample sealing available; standard orders ship within 15–20 days, with large orders accommodated via split shipments.
Precision Processing
Processing-friendly and universally adaptable: Easily cut, chamfered, polished, and shaped into custom forms. Thickness tolerance ±0.5mm, diagonal tolerance ±1mm, flatness tolerance ±0.3mm, meeting overseas premium finishing and engineering standards.
Cost Advantage
Unrivalled value over imported black granites: Priced 40%-60% lower than Indian Black, South African Black, and Brazilian Black, yet matching or exceeding their performance and durability.
Surface Treatment
- Polished finish (POL): Mirror-like high gloss, suitable for interior walls/floors, lift lobbies, hotel lobbies, countertops.
- Flamed finish (FLM): Rough and slip-resistant, the preferred choice for overseas municipal squares, pavements, and car parks.
- Bush-hammered (BHM): Uniform pitted texture offering both slip resistance and tactile character. Suitable for exterior wall cladding, landscaping, and stair treads.
- Additional options: Honed, Sandblasted, Natural, Brushed, Tactile paving, Custom carved surfaces.
Standard Specifications (Customisation Available)
1. Large Slabs
- Standard Dimensions: 2400×1200mm, 2600×1300mm; oversized slabs available upon request.
- Thickness: 18mm, 20mm, 30mm (mainstream for construction projects), 16mm (premium thin slabs).
2. Project Tiles
- Common Specifications: 600×600mm, 800×800mm, 300×600mm.
- Thickness: 15mm (interior), 20mm (exterior), 30mm (heavy-duty flooring).
3. Custom Shapes
- Kerbstones: 1000×150×300mm (standard).
- Customisable Items: Stair treads, window sills, mouldings, columns, curved slabs, tactile paving stones, gravestones, water feature stones, bridge parapet panels, etc.
Application Scenarios
- Dry-hung exterior cladding: Office buildings, luxury hotels, commercial complexes; dark tones lend a dignified appearance, with stain-resistant and low-maintenance properties ideal for heavily polluted urban and coastal environments.
- Paving applications: Municipal squares, airports, high-speed rail stations, underground stations, large car parks, port terminals; high hardness and abrasion resistance with excellent slip resistance.
- Landscape features: Flowerbeds, stepping stones, staircases, feature walls, sculpture plinths, water feature revetments; versatile black-based white-veined design complements Chinese, European, and contemporary landscapes.
- Infrastructure: Kerbstones, bridge parapets, hydraulic engineering cladding, coastal defence works; resistant to seawater corrosion and freeze-thaw cycles, ensuring extended service life.
- Interior Finishing: Lobby walls/flooring, lift lobbies, kitchen worktops, bathroom countertops; sophisticated tones elevate spatial sophistication.
Foreign Trade Codes and Customs Declaration
National Standard Code: G654
HS Codes:
- a. Rough blocks (uncut): 25161100.00
- b. Rectangular slabs/blocks (most common): 25161200.00
- c. Polished finished slabs: 68022390
- d. Special-shaped/carved pieces: 68029190
Compliance Notice: Provide a Radioactivity Test Report (Class A), Certificate of Origin, Packing List, and Commercial Invoice to meet importing country customs requirements.
Compared with G603
| Comparison Item | G654 (Sesame Black) | G603 (Sesame White) |
|---|---|---|
| Colour Tone | Deep charcoal-black base with white sesame-like speckles | Light white base with small black speckles |
| Hardness/Abrasion Resistance | Enhanced durability, suitable for heavy-duty outdoor and coastal applications | High-grade, more suitable for indoor and light outdoor use |
| Stain Resistance/Maintenance | Superior stain resistance, minimises visible dirt from dust and rain | Light colours show dirt easily, requiring more frequent cleaning |
| Price | Slightly elevated cost (reflecting premium density and hardness) | Excellent value for money, ideal for large-scale installations |
| Export Market | Premium exterior cladding for Middle East, Europe and North America; Southeast Asian ports/municipal projects | Globally popular, particularly favoured in premium residential finishes across Japan, Korea and Southeast Asia |
Procurement Notes
- Colour Variation Control: Within the same quarry and production batch, colour variation shall not exceed Grade 2. Free provision of 3–5 small samples for confirmation.
- Packaging Specifications: Wooden pallets + moisture-proof film + steel strapping, compliant with international maritime shipping standards. Protects against impact damage and seawater corrosion.
- Delivery Lead Time: Standard orders: 15–20 days; oversized orders delivered in batches with negotiable lead times.
- Quality Standards: Compliant with GB/T 18601, ASTM C615, and CE EN 1341, accompanied by authoritative third-party inspection reports.
- Minimum Order Quantity: Slabs: 50m² minimum; Project panels: 100m² minimum. Flexible adjustments available for long-term partners.
Frequently Asked Questions
Q1: What are the primary differences between G654 and G603 granite?
G654 features a deep charcoal-black base with white sesame speckles, offering superior hardness, stain resistance, and suitability for heavy-duty exterior environments. In contrast, G603 has a light white base with dark specks and is primarily favoured for brighter indoor surfaces and light-duty installations.
Q2: Which surface finish is recommended for outdoor municipal paving?
The flamed finish (FLM) and bush-hammered finish (BHM) are highly recommended for outdoor municipal areas, pedestrian paths, and plazas due to their rough, non-slip texture and low glare properties.
Q3: Is G654 granite certified for interior residential and commercial use?
Yes. G654 is tested and verified as Class A non-radioactive stone, making it completely safe for unrestricted use in interior living spaces, kitchen countertops, hotel lobbies, and food preparation areas.
Q4: What is the standard packaging to prevent transit damage during sea freight?
Consignments are packed using export-grade reinforced wooden pallets, wrapped with waterproof moisture barrier films, and secured tightly with steel strapping to protect the material from physical impact and seawater corrosion during long transit times.
Q5: What are the typical lead times and Minimum Order Quantities (MOQ)?
Standard project orders typically ship within 15 to 20 days. The standard MOQ is 50 square metres for large slabs and 100 square metres for cut-to-size project panels.
