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How Tianya Limestone meets Russian and EAEU GOST 30629-2011 (F100 frost grade, <0.5% water absorption on dense grades, and NRB-99/2009 Class 1 radiation safety).
Our dense limestone passes 100 freeze-thaw cycles (-20°C/+20°C saturation) with < 2.1% compressive strength loss and carries Class 1 (<370 Bq/kg) unrestricted residential/public building clearance.
How Tianya Limestone meets Russian and EAEU GOST 30629-2011 (F100 frost grade, <0.5% water absorption on dense grades, and NRB-99/2009 Class 1 radiation safety). When specifying natural limestone for high-value residential villas, hospitality resorts, or commercial facades, decisions must be anchored in laboratory-verified petrographic and mechanical data rather than generic trade assumptions.
| Benchmark Parameter | Verified Factory & Laboratory Standard | Reference Module |
|---|---|---|
| Petrographic Class | ASTM C568 Category III High-Density Limestone (2,650 kg/m³) | Module 04 |
| Water Absorption & Frost | 0.85% – 1.80% (ASTM C97) · 100 Cycles Passed / F100 (ASTM C666 / GOST 30629) | Module 06 |
| Calibration & Pre-Shipment QC | ±1.0mm CNC Calibration + 3,000 m² Dry-Lay Hall Photo Approval | Module 02 |
| 20GP Container Utilization | 20mm: ~500 m² | 30mm: ~320 m² | 50mm: ~190 m² (27 MT Payload) | Module 05 |
