China G3743 Lu Grey Granite Building Stone Manufacturer, Factories
Product Description
| Performance Indicators | Numerical Range (G3743 Lu Grey Standard) | Industry Significance (Key Highlights) |
|---|---|---|
| Bulk Density | 2.68–2.76 g/cm³ | Featuring a dense structure and high load-bearing capacity, it is suitable for external wall dry-hanging, floor paving, curtain wall decoration, and heavy-duty applications. It meets the stringent requirements of premium overseas projects, exhibits minimal deformation over extended use to ensure structural stability, and complies with European and American building material load-bearing standards (ASTM C615), making it directly applicable for high-end curtain wall projects. |
| Water Absorption Rate | ≤0.07% | Exceptionally low water absorption with outstanding freeze resistance, impermeability, moisture resistance, and stain resistance. Suitable for humid, rainy, snowy, frigid, and tropical monsoon environments. Requires no additional moisture-proofing or stain-resistant treatments. Effectively prevents stone contamination and deterioration, significantly reducing overseas clients' long-term maintenance costs. Adaptable to diverse global climates, particularly suited for northern European frigid zones and Southeast Asian monsoon regions. |
| Mohs Hardness | Grade 7.0–7.5 | Exceptional hardness delivers outstanding abrasion resistance, scratch resistance, and impact resistance. Suitable for high-traffic areas and long-term outdoor use, it resists scratching and damage, substantially reducing long-term maintenance costs for overseas clients while enhancing project cost-effectiveness. Additionally, it offers ease of cutting, polishing, and forming to meet complex customisation demands, making it ideal for high-end special-shaped processing applications. |
| Compressive Strength | 190–290 MPa | Exceptional compressive strength enables use in heavy-duty applications such as premium curtain walls, municipal plazas, airport VIP zones, and high-end industrial facilities. Meets stringent strength standards for premium projects across Europe, America, Japan, Korea, and the Middle East, accommodating diverse large-scale engineering requirements without structural safety concerns. Capable of bearing heavy loads demanded by high-end projects. |
| Flexural Strength | 22–32 MPa | Possesses good flexural strength with low fracture susceptibility, making it suitable for large-area installations, curved curtain walls, and complex custom shaping. It accommodates overseas bespoke project requirements, fulfils diverse specialised design specifications, and enhances decorative versatility in construction. It is particularly well-suited for curved shaping in high-end curtain walls. |
| Abrasion Resistance (Wear Volume) | <0.16 g/cm² | Outstanding abrasion resistance ensures an outdoor lifespan exceeding 55 years with minimal maintenance. It suits high-traffic outdoor settings and high-frequency indoor areas, maintaining an excellent appearance over extended use. This reduces long-term operational costs for overseas clients, enhancing the project's overall cost-effectiveness. It is particularly suitable for high-traffic environments such as airports and shopping centres. |
| Acid Resistance Rate | ≥98.2% | Resistant to acid rain and chemical corrosion, it suits industrial zones, polluted environments, and coastal regions. Long-term use shows no corrosion or discolouration, making it globally adaptable—particularly for coastal nations' outdoor projects. It significantly extends stone lifespan and is suitable for coastal curtain walls and flooring. |
| Alkali Resistance Rate | ≥99.0% | Exceptional alkali resistance allows pairing with diverse decorative materials without chemical reaction risks. Suitable for extensive indoor/outdoor applications, it simplifies design and construction while boosting efficiency. Meets varied overseas project requirements and integrates seamlessly with tiles, coatings, and other finishes. |
| Weather Resistance | Excellent | Maintains stability in extreme environments from -45°C to 75°C. Exhibits no significant colour variation, weathering, or deformation after 30+ years of outdoor use. Suitable for global climates including cold, tropical, and subtropical zones. Eliminates concerns over climatic effects on stone appearance. Meets diverse overseas project requirements while reducing long-term maintenance costs. Particularly well-suited for Europe's cold regions and the Middle East's tropical areas. |
| Radioactivity | Class A | Suitable for safe use both indoors and outdoors, compliant with stringent environmental and safety standards across multiple regions including Europe and America (ASTM C615), Japan and Korea (JIS A 5201), and the Middle East (SASO). Ensures seamless customs clearance, enabling direct application in diverse civil and public buildings. Mitigates overseas customs clearance risks, facilitating smooth delivery for customers without concerns over environmental compliance. |
G3743 Shandong Grey can be categorised into three core sub-categories based on colour depth and vein density. Each category possesses distinct advantages, catering to varying overseas market demands and project scenarios. Recommendations can be tailored flexibly according to client budgets, aesthetic preferences, and application contexts. Below are the most sought-after categories in international trade, enabling overseas clients to swiftly identify requirements and enhance enquiry conversion rates:
Core production area: Laizhou, Yantai, Shandong. Features a light grey base colour with fine, uniform, sparse filamentary veining. Exhibits no significant colour variation or fissures. Achieves a polished gloss ≥95°. Primarily targets high-end architectural decoration and premium interior finishing applications. Suited for overseas luxury hotels, villas, commercial complexes, and office buildings. The preferred category for premium markets in Europe, Japan, and South Korea. Relatively higher priced. Offering supreme quality, it embodies a minimalist and elegant decorative style, meeting premium finishing requirements. Particularly suited for interior and exterior decoration in high-end residential and commercial spaces.
Produced in both Yantai and Rizhao, Shandong. Features a medium grey base colour with naturally distributed, moderately dense fibrous veining. Colour variation within the same batch ≤0.8 grade, with no visible fissures. Capable of producing diverse surface finishes, it is primarily used in municipal projects, general building decoration, and landscape architecture. Offering exceptional value for money, it is a mainstream category for overseas bulk procurement, suitable for various mid-to-high-end projects. Balancing quality and cost, it meets large-scale purchasing requirements and is one of the preferred grey stone choices for overseas municipal projects.
Core production area in Rizhao, Shandong. Features a deep grey base colour with dense, thread-like veining and a stable hue, imparting a naturally substantial texture. Possesses a hard, durable composition with enhanced wear resistance. Primarily used in outdoor landscapes, municipal plazas, and tombstones. Suitable for overseas garden projects, commemorative installations, and industrial buildings. Offers an affordable price point ideal for large-scale outdoor project procurement, offering outstanding value for money. It also complements industrial-style interiors and aligns with outdoor project requirements in the Middle East and Southeast Asia.
Gloss ≥95°, delivering exceptional mirror-like effects. The grey undertone exhibits a warm translucency, with distinct, luminous filamentary patterns accentuating premium texture. The preferred choice for high-end interior and exterior decoration, it graces overseas luxury hotel lobbies, villa flooring, and curtain wall cladding, embodying minimalist elegance. Select premium categories achieve gloss levels of 100-110°, delivering superior decorative impact. Ideal for high-end commercial and residential settings, this finish is highly favoured in European, Japanese and Korean luxury markets, serving as the preferred surface treatment for premium curtain walls and interior flooring.
With a slip resistance coefficient ≥0.85. The finish exhibits a deeper, richer colour with pronounced thread-like textures. Ideal for premium municipal squares, landscaped walkways, and upscale residential pathways, it balances practicality with aesthetic appeal. A frequent choice for overseas municipal projects and outdoor landscapes, it is particularly suited for outdoor paving in regions with frequent rain, snow, or ice, enhancing safety. Suitable for outdoor projects in northern European cold climates.
Features uniformly fine, textured relief with slip resistance and wear durability, combining tactile quality with decorative appeal. The grey base tone complements the fibrous texture, making it suitable for premium dry-hung exterior walls, landscape balustrades, and stair treads. It highlights a natural, elegant style, aligning with high-end residential developments and scenic landscape projects overseas. Particularly favoured in Southeast Asian and Middle Eastern markets, it can be used for landscape and exterior wall decoration in upscale residential communities.
A soft matte sheen embodies understated luxury. Its gentle, non-glare colour palette and naturally soft, fibrous texture suit premium interior flooring, stair treads, and countertops. Compatible with modern minimalist, neo-minimalist, and new Chinese design styles, it meets overseas high-end home and hotel fit-out requirements, elevating spatial quality. Ideal for high-end residential finishing scenarios, particularly suited to interior decoration in luxury villas.
Delivers a refined, frosted texture with excellent stain resistance and ease of cleaning. Features uniform, gentle colouration with subtly visible fibrous patterns. Ideal for premium exterior walls and interior feature walls, complementing minimalist and high-end design aesthetics. A popular choice for contemporary architectural decoration overseas, particularly suited to clients seeking understated sophistication and minimalist styles. Suitable for office buildings, luxury apartments, and similar settings, including office feature walls and exterior cladding.
A rugged, primal texture where grey undertones blend naturally with fibrous patterns, exuding inherent rustic charm. Suitable for premium landscape stones, doorstep stones, cultural walls, and garden sculptures. Meets high-end landscape design requirements for overseas parks, scenic areas, and upscale residential developments, showcasing natural aesthetics. Ideal for cultural tourism projects, applicable to landscape sculptures and cultural walls in overseas scenic sites.
• External Wall Dry-Hanging and Curtain Walls: Suited for luxury hotels, office towers, government buildings, high-end villas, and commercial complexes. Its grey base tone complemented by filamentary veining exudes understated elegance and dignified grandeur, elevating architectural sophistication. Aligning with overseas premium architectural aesthetics and quality standards, it stands as the preferred grey stone for high-end curtain wall projects abroad. Numerous international luxury office towers and hotels feature G3743 Lu Grey for their facades, enjoying exceptional market recognition—particularly prevalent in European markets.
• Interior Decoration: Luxury hotel lobbies, shopping mall atriums, villa flooring, stair treads, feature walls, and countertops. It complements sophisticated interior designs, emphasising quality and natural charm. It meets the demands of premium residential and commercial spaces overseas, being particularly favoured in high-end markets across Europe, Japan, South Korea, and the Middle East. As one of the mainstream stones for luxury residential finishes and commercial decor, it suits popular styles like modern minimalism and minimalist design, creating an elegant and refined spatial atmosphere.
• Municipal Squares: Premium municipal plazas, scenic pathways, cultural square paving, and stair treads. Combining practicality with decorative appeal, its fibrous texture exudes a dignified character. Suited for overseas municipal upgrades and park/scenic area developments, such as overseas Chinese community squares, urban landscape plazas, and airport terminal perimeter paving. A mainstream grey stone for overseas municipal projects with robust bulk procurement demand, particularly favoured for European, Japanese, and Korean municipal square construction.
• Commemorative Projects: Monuments, memorial halls, martyrs' cemeteries, and pedestals for statues of notable figures. The grey base colour symbolises solemnity, reverence, and eternity, making it ideal for commemorative settings. It is the preferred grey stone for overseas memorial projects, particularly favoured by Chinese communities and European commemorative initiatives. Custom engraving and shaping are available to align with local commemorative cultures and emphasise memorial significance, establishing it as one of the core stones for overseas commemorative works.
• Horticultural Landscaping: Premium residential estate landscaping, park scenery, golf courses, scenic landscape stones, and stone balustrades. Complements high-end horticultural design styles prevalent in Europe, America, Japan, Korea, and the Middle East, emphasising the fusion of natural beauty and sophistication. The grey base complements greenery, enhancing landscape depth and meeting overseas demands for premium property and scenic area upgrades. As a popular grey stone for international landscaping, it suits diverse settings to create natural, refined ambience.
• Signature Architecture: Leveraging the natural texture of G3743 Lu Grey, this stone is employed in high-end guesthouses, cultural town wall construction, industrial-style exhibition hall fit-outs, and new Chinese-style architectural decoration. It embodies natural aesthetics and minimalist elegance, catering to overseas cultural tourism projects, rural revitalisation initiatives, and Chinese cultural park developments. It forges distinctive architectural styles, elevates project recognition, and suits diverse specialised building contexts—particularly ideal for creating signature structures in overseas cultural tourism ventures.
• Premium Countertops: Ideal for hotel bars, luxury villa washbasins, dining surfaces, and kitchen worktops. Its refined texture offers easy maintenance with exceptional resistance to wear, oil stains, and contamination. Suited to upscale living environments, it meets overseas demands for high-end residential and hospitality furnishings. Particularly favoured by clients seeking minimalist sophistication, it elevates living standards and serves as the preferred stone for premium countertops in exclusive residences and hotel facilities.
• Premium Tombstones and Memorials: Highly sought-after in premium tombstone markets across Europe, America, Japan, Korea, and the Middle East. The grey base conveys solemnity and eternity, while the fibrous texture adds a vintage quality. Custom carvings and engravings are available, meeting overseas premium memorial requirements. Particularly suited for tombstone customisation within Chinese communities, it also aligns with local memorial cultural customs. As a preferred category for overseas memorial stone, its export volume increases annually.
• Industrial premium applications: Suited for high-end factory flooring, anti-corrosion projects, and workshop surfaces. Leveraging exceptional abrasion resistance, corrosion resistance, and stain resistance, it meets demands in premium industrial settings. Ideal for overseas high-end manufacturing and chemical plant construction, its acid/alkali resistance and corrosion-proof properties adapt to highly polluted industrial environments. Ensures long-term durability without degradation, making it suitable for industrial premium scenarios, including factory flooring in overseas high-end manufacturing facilities.
Sourced exclusively from Shandong, China, this granite features a light to medium grey base complemented by natural filamentous veining. Its unique texture and warm hue set it apart from common grey granites (such as G614 Sesame Grey with its speckled pattern). It harmoniously blends decorative appeal with natural charm, complementing diverse overseas design aesthetics including modern minimalism, neo-Chinese, European, and industrial styles. This versatility caters to varied international client preferences, ensuring high market acceptance. It elevates project sophistication for overseas clients while adapting to diverse installation contexts, particularly resonating with premium European, Japanese, and Korean design sensibilities.
With a Mohs hardness of 7.0-7.5, its abrasion resistance, compressive strength, weather resistance, and stain resistance surpass comparable imported grey granites. Boasting an outdoor lifespan exceeding 55 years with minimal maintenance requirements, it significantly reduces long-term upkeep costs for overseas clients. This aligns with the enduring demands of premium projects, enhancing cost-effectiveness while effectively preventing stone contamination and deterioration. Its quality stability far exceeds industry standards.
Leveraging China's mature high-end stone processing supply chain, equipped with advanced digital machinery and specialised technical teams, it offers effortless cutting, polishing, and shaping. Capable of handling oversized slabs, complex custom shapes, and intricate carving projects, with processing tolerances ≤±0.2mm. This meets the demands of overseas premium projects and bespoke orders, accommodates diverse specialised applications, enhances client satisfaction, and assists in securing custom contracts. Its processing capabilities rank among the industry's foremost.
Class A radioactivity compliance meets stringent environmental and safety standards across Europe, America, Japan, South Korea, the Middle East, and beyond. Exceptional weather resistance adapts to global climates (suitable for cold, tropical, and subtropical zones), fulfilling premium project quality requirements in diverse nations and settings. Seamless customs clearance, particularly suited for core export markets like Europe, Southeast Asia, and the Middle East, mitigates overseas trade risks. Facilitates smooth customs clearance and efficient delivery for clients, with no concerns regarding environmental compliance or regulatory issues.
China possesses an integrated industrial chain encompassing mining, processing, quality inspection, and logistics. Core production areas are proximate to major ports such as Yantai, Rizhao, and Qingdao, enabling direct maritime access to major global premium market ports. Europe, Southeast Asia, and the Middle East constitute primary export destinations, supporting market expansion in RCEP member states. We pioneer an integrated development model combining ‘premium customisation + cross-border e-commerce + overseas warehousing,’ enhancing overseas clients' delivery efficiency, reducing logistics costs, and accelerating fulfilment cycles. This approach particularly facilitates market penetration in Europe, Japan, and South Korea while shortening supply chain timelines.
Compared to imported grey granite equivalents, G3743 Lu Grey offers superior pricing (market rate approx. ¥120-135/m², inclusive of 3% reasonable wastage). It delivers consistent quality and diverse product ranges to meet varying budget requirements. Years of export experience have cultivated a robust market reputation. Private enterprises demonstrate robust vitality, with exports accounting for over 90% of production. Leveraging a mature industrial ecosystem, it assists overseas clients in reducing procurement costs, enhancing project competitiveness, and capturing the global premium grey stone market. It stands as the high-value choice for overseas buyers sourcing premium grey stone.
The core subcategories comprise G3743 Class A (Premium), G3743 Class B (Standard), and G3743 Class C (Deep Grey): Class A is primarily suited for high-end interior finishing and premium curtain walls; Class B is ideal for municipal projects and standard decoration (offering the best value for money); Class C is best suited for outdoor landscaping and commemorative projects. We recommend suitable categories based on project context, budget, and aesthetic requirements, providing samples for client confirmation to ensure precise procurement. Sample dispatch services are available for quality verification.
Suitable: Freeze-thaw resistant (50 cycles at -45°C without cracking), heat-resistant (stable at 75°C), low water absorption (≤0.07%), impermeable and moisture-proof, highly stain-resistant, acid rain resistance, and alkali corrosion resistance. Suitable for global climates including polar, tropical, subtropical, and coastal regions. No concerns regarding climate or environmental impact on stone colour or texture; maintains excellent condition during long-term outdoor use. Particularly suitable for coastal nations' outdoor projects and European polar regions, adapting to diverse climates and environments.
No: With silica content exceeding 70% and a dense crystalline structure, it exhibits no significant colour variation after 30+ years of UV exposure. Accelerated ageing tests show ΔE < 0.8 (far below the industry standard of 3.0). Long-term outdoor use causes no weathering or deformation. Fibrous textures naturally deepen over time, enhancing the stone's substantial character. No concerns regarding appearance changes ensure sustained aesthetic appeal for projects, reducing maintenance costs and offering a lifespan far exceeding comparable stones.
Available: Complimentary radioactive testing reports (Class A), third-party physical property test reports, certificates of origin, packing lists, and invoices. We assist clients with import customs clearance procedures in destination countries, strictly adhering to customs regulations for import/export commodity classification to mitigate declaration risks. Particularly suited for high-end market clearance requirements in RCEP member states. We also facilitate customs commodity code inquiries to ensure smooth clearance and successful delivery, offering comprehensive customs clearance support services.
Significant advantages: wider variety, more distinctive patterns (highly recognisable natural filamentary veining, differing from the spotted patterns of grey stone from other countries), consistent quality with more competitive pricing; mature supply chain enabling long-term stable supply, high precision in digital processing, and flexible customisation; Logistics are streamlined via China's major coastal ports in Shandong, enabling direct access to global core markets. It enjoys strong reputation and market presence particularly in Europe, Southeast Asia, and the Middle East. Comprehensive after-sales and bespoke services enhance the customer procurement experience, offering far superior value for money compared to imported equivalents.
Not prone: G3743 Lu Grey exhibits extremely low water absorption (≤0.07%), featuring a dense structure and strong stain resistance. Simple protective treatments can further enhance its stain-repellent properties. Routine maintenance requires no complex procedures—regular wiping with clean water suffices. Should stains occur, neutral cleaners may be used, avoiding strong acids or alkalis. Long-term use maintains excellent appearance, reducing subsequent maintenance costs and client operational expenditure. Maintenance expenses remain significantly lower than comparable stone materials.
