Polished granite tiles

Selecting the right granite requires balancing aesthetics with physical properties. Prioritize Grade A material with a high gloss rating (typically above 85-90 degrees) for a mirror-like finish. Ensure the tiles have a uniform thickness (tolerance within ±0.5mm to ±1mm) to prevent uneven flooring. For high-traffic commercial areas, verify the Mohs hardness scale rating is 6 or higher to ensure scratch resistance and long-term durability.

Buyers must ensure products meet ASTM C615 (Standard Specification for Granite Dimension Stone) or EN 14617 standards. Key metrics include water absorption rates (should be <0.4%) to prevent staining and flexural strength (minimum 8-10 MPa) to avoid cracking under load. Always request a CE Certification or a Material Safety Data Sheet (MSDS) if the granite is treated with chemical sealants.

Request high-definition videos or third-party inspections to check for 'orange peel' effects or dull spots on the surface. For edges, specify whether you need polished eased edges, bullnose, or beveled edges, and ensure the chamfering is consistent across all pieces to facilitate seamless installation. Dry-lay inspections at the factory are highly recommended for large-scale projects to ensure color consistency.

Polished granite is ideal for indoor flooring, wall cladding, and luxury countertops. However, it can be slippery when wet, so it is less suitable for outdoor ramps or pool decks. Maintenance involves using pH-neutral cleaners; avoid acidic substances that can etch the surface. For long-term protection, ensure the supplier applies a high-quality impregnating sealer before shipping.

The biggest risks are breakage during transit and color variation (chromatic aberration). To mitigate these, insist on reinforced wooden crate packaging with IPPC fumigation and internal foam padding. To manage color issues, require the supplier to source all tiles from the same quarry block and provide a range sample showing the maximum acceptable color deviation.

Focus on Total Landed Cost rather than just the FOB price. Negotiate for volume-based discounts (typically 5-15% for full container loads) and ask for free spare tiles (usually 2-3% of the total quantity) to cover potential job-site breakage. Use the Secured Trading Service on Made-in-China.com to ensure payment is only released after quality verification.

Granite is extremely heavy; ensure your logistics provider is experienced in Heavy-Lift cargo. Verify the maximum weight limits per container in your destination country (e.g., 20ft containers are preferred over 40ft for stone). Ensure the Bill of Lading (B/L) accurately reflects the weight to avoid heavy fines at the port of entry. Always purchase All-Risk Marine Insurance covering 110% of the cargo value.