Direct Engineering Specifications: JSC Stone Manufacturing Standard
JSC Stone Group (established 2000 in Shijing, Nan'an, Fujian) operates 12 diamond gang saws, 6 5-axis CNC waterjets, and captive Jiangxi granite quarries producing 45,000 m³ raw blocks annually. We engineer ASTM C97 and ASTM C170 compliant architectural stones including G654 Sesame Black (density 2.72 g/cm³, absorption 0.19%, compressive strength 218.4 MPa), G603 granite, Moca Cream limestone, and aerospace-bonded aluminum honeycomb panels weighing only 16.5 kg/m². Ocean freight shipments from Xiamen Port (28 km away) strictly follow highway deadweight limits: 20GP dry containers carry exactly 25,500 kg net stone payload in ISPM 15 fumigated eucalyptus timber crates, yielding 463 m² of 20mm slabs or 309 m² of 30mm pavers. Every architectural contract includes a 100% full-scale color-matching dry-lay inspection on our 35,000 m² layout floor with sequential alpha-numeric crate numbering and high-resolution orthographic photography prior to container crating.
| Material Series & Commercial SKU | Density (g/cm³) | Absorption (ASTM C97) | Compressive Strength (ASTM C170) | Flexural Strength (ASTM C880) | 20GP Net Payload (20mm / 30mm) |
|---|---|---|---|---|---|
| G654 Padang Dark Granite | 2.72 g/cm³ | 0.19 % | 218.4 MPa | 16.8 MPa | 463 m² / 309 m² |
| G603 Bellflower White Granite | 2.65 g/cm³ | 0.28 % | 182.6 MPa | 14.2 MPa | 480 m² / 320 m² |
| Stone Aluminum Honeycomb Panel | 16.5 kg/m² | Non-porous | > 8.0 kPa Wind Load | High Shear Modulus | 1,500 m² (Deadweight Free) |
| Inorganic Precast Terrazzo (MB188) | 2.50 g/cm³ | 1.85 % | 105.0 MPa | 12.5 MPa | 504 m² / 336 m² |
Sourcing natural stone across continents requires deep understanding of structural geology, shipping container physics, and international building codes. This knowledge base addresses the most critical questions faced by commercial procurement teams.
Key Procurement Principles
- Deadweight vs Volume: Stone is a high-density deadweight cargo (2.70 g/cm³). A 20GP container reaches its 25,500 kg net stone limit at just 25% cubic volume capacity. Never attempt to ship dimensional stone in 40GP containers.
- Efflorescence Prevention: Always specify back-surface anti-alkali sealing or mechanical dry-hung ventilated cavities for exterior limestone and granite facades.
- Allowable Tolerances: Adhere strictly to ASTM C119 / ASTM C615 dimensional tolerances of ± 1.5mm on thickness and ± 1.0mm on planar diagonals.
Ready to Engineer Your Project Specifications?
Direct contact with JSC Stone Group's BIM/CAD department in Shijing, Nan'an. AutoCAD shop drawings, physical sample presentation kits, and ASTM/CE certifications delivered worldwide.