Quartz Kitchen Countertops – Wholesale Supplier

Quartz slabs for kitchen countertops are engineered stone composites consisting of approximately 90‑95 % ground natural quartz aggregate bound with polymer resins and pigments. This composition yields a non‑porous surface that resists staining, microbial growth, and chemical attack from common kitchen agents such as acids, oils, and cleaning solvents.

Material Composition

The quartz aggregate is selected for particle size distribution typically ranging from 0.1 mm to 2 mm, which influences the final slab’s density and mechanical interlock. Resin systems are usually unsaturated polyester or acrylic based, cured to achieve a cross‑linked matrix with a glass transition temperature above 80 °C, ensuring stability under typical cooking temperatures.

Pigments are inorganic metal oxides that provide UV stability, preventing discoloration when exposed to prolonged sunlight or indoor lighting. The typical resin content falls between 5‑10 % by weight, balancing flexibility with hardness.

Mechanical and Physical Properties

The following table lists typical values for quartz countertop slabs produced under controlled manufacturing conditions. Actual values may vary based on specific formulation and thickness; all data are derived from standard test methods referenced in the table.

Manufacturing Process

Raw quartz is crushed, washed, and dried before being blended with measured amounts of resin, pigment, and optional additives such as antimicrobial agents or reflective flakes. The mixture is fed into a vacuum vibration press where it is compacted under pressures of 80‑100 bar to eliminate air voids and achieve uniform density.

After pressing, the slab undergoes a curing cycle in a heated oven typically ranging from 80 °C to 100 °C for 45‑60 minutes, allowing the resin to fully polymerize. Slabs are then calibrated to thickness tolerances of ±0.5 mm, polished with progressively finer diamond abrasives to achieve a gloss level above 70 GU, and inspected for surface defects before shipment.

Customization Options

Wholesale buyers can specify variations that affect both appearance and performance without altering the core quartz‑resin matrix.

• Thickness: 12 mm, 18 mm, 20 mm, 30 mm (custom thicknesses available upon request)
• Edge profiles: eased, beveled, bullnose, ogee, waterfall (CN‑machined to ±0.2 mm tolerance)
• Surface finishes: polished (gloss >70 GU), honed (gloss 10‑30 GU), leather‑textured, brushed
• Color palette: standard whites, greys, beiges; custom colors achievable via pigment loading up to 12 % by weight
• Additives: antibacterial agents (silver ion based), UV stabilizers, metallic flecks for decorative effects

Applications in Commercial Kitchens

The non‑porous nature of quartz prevents absorption of food liquids, reducing the risk of bacterial harborage and simplifying sanitation protocols required by health codes such as FDA Food Code and HACCP guidelines.

High compressive and flexural strengths allow the countertop to support heavy equipment loads—commercial mixers, slicers, and steam tables—without cracking or deflection over typical service lives exceeding 15 years under normal use.

Resistance to thermal shock from hot pans (up to 180 °C) and to chemical attack from citric acid, vinegar, and alkaline cleaners ensures surface integrity in environments where frequent cleaning and temperature cycling occur.

Quality Control & Testing

Each production lot undergoes systematic inspection: thickness verification with laser micrometers, surface flatness measured using straight‑edge and feeler gauges (<0.3 mm deviation over 1 m), and gloss measurement calibrated to ISO 2813.

Representative samples are submitted for third‑party testing of water absorption, compressive strength, and chemical resistance. Results are documented in material data sheets supplied with every shipment, enabling buyers to verify compliance with project specifications.

Traceability is maintained through batch numbers etched on the slab underside, linking each piece to resin lot, quartz source, and curing cycle parameters.

Packaging & Logistics

Slabs are packed on wooden pallets with edge protectors and interleaving sheets of low‑density polyethylene to prevent chipping and surface abrasion during transit. Standard pallet dimensions accommodate 20 mm thick slabs at a maximum load of 2 tons per pallet, conforming to ISO 1496‑1 for containerized shipping.

For international shipments, moisture‑barrier wraps and corner boards are added, and the cargo is secured with strapping that meets ASTM D3953 specifications. All packages are marked with handling instructions: “Keep Dry, Avoid Direct Sunlight, Handle with Care.”

Frequently Asked Questions

• Can dimensions be customized beyond standard slab sizes? – Yes, custom lengths up to 3200 mm and widths up to 800 mm are available with CNC cutting to ±0.5 mm tolerance.
• What information is required before a quotation? – Project specifications including slab thickness, edge profile, finish, color reference, quantity, and delivery destination.
• What quality certifications do you provide? – ISO 9001 for quality management, ISO 14001 for environmental management, and NSF/ANSI 51 certification for food‑zone surfaces upon request.
• How is quality inspected before shipment? – Each slab undergoes dimensional, visual, and mechanical testing as outlined in our QC protocol; test reports are supplied with the load.
• What packaging methods protect the slabs during long‑haul transport? – Palletized with edge protectors, polyethylene interleaving, moisture‑barrier wrap, and corner boards; all compliant with ISPM‑15 for wood packaging.
• What is the typical production lead time? – 10‑15 business days for standard colors; 20‑25 business days for custom colors or special additives.
• How are samples arranged? – Free sample tiles (100 mm × 100 mm) are shipped via express courier; larger sample slabs (300 mm × 300 mm) are available at a nominal cost, credited against the first order.

Get a Quote

To discuss your project requirements, request a detailed quotation, or obtain technical data sheets, please contact our sales team.