Oem White Quartz Bathroom Countertops

White quartz countertops are engineered stone slabs composed of approximately 90‑95% ground quartz aggregate bound with polymer resins and pigments. The high quartz content provides a non‑porous

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Description

OEM White Quartz Bathroom Countertops

White quartz countertops are engineered stone slabs composed of approximately 90‑95% ground quartz aggregate bound with polymer resins and pigments. The high quartz content provides a non‑porous surface that resists staining, bacterial growth, and chemical attack typical in bathroom environments.

Material Composition and Performance

The resin binder, usually a unsaturated polyester or acrylic system, contributes flexural strength and impact resistance while allowing precise color control. Typical flexural modulus ranges from 10–12 GPa, and compressive strength exceeds 150 MPa, ensuring durability under daily loads.

Surface finish options include polished, honed, or leathered textures. Polished finishes achieve a gloss rating of 70‑80 GU, honed finishes 20‑30 GU, and leathered finishes provide a matte appearance with improved slip resistance (wet pendulum test value > 45).

Manufacturing Considerations

Slabs are produced via vacuum vibration casting, which minimizes air entrapment and ensures uniform density. Curing occurs at 60‑80 °C for 2‑4 hours, followed by calibration to thickness tolerances of ±0.5 mm. Edge profiling is performed with CNC routers to achieve tolerances of ±0.2 mm on radii.

Quality control includes slab thickness measurement, surface defect inspection under 500 lux lighting, and chemical resistance testing using ASTM C650. Only slabs passing a 95 % visual acceptance rate proceed to packaging.

Technical Specifications

Property	Typical Value	Test Standard
Density	2.3‑2.4 g/cm³	ASTM C97
Water Absorption	<0.05 %	ASTM C97
Flexural Strength	45‑55 MPa	ASTM C880
Mohs Hardness	6‑7	EN 101
Heat Resistance (short term)	Up to 150 °C	Manufacturer internal

Applications in Bathroom Environments

The non‑porous nature of white quartz prevents water penetration, reducing the risk of mold and mildew growth behind vanities and shower surrounds. Its chemical resistance to common bathroom cleaners (e.g., ammonia‑based, bleach) ensures surface integrity over years of use.

White quartz provides a neutral backdrop that enhances lighting reflectance, improving perceived space in compact bathrooms. The consistent coloration allows seamless integration with ceramic fixtures, glass enclosures, and metal hardware without visual variation.

Quality Control Philosophy

Each production lot undergoes random sampling for thickness, flatness, and surface gloss. Defects such as pits, resin spots, or color streaks are documented and traced to specific mixing or curing parameters, enabling corrective actions before shipment.

Final inspection includes a 10 × 10 cm abrasion test per ASTM C1243 to verify wear resistance, ensuring the surface maintains appearance after simulated cleaning cycles.

Customization Options

Thickness: 12 mm, 18 mm, 20 mm, 30 mm (custom upon request)
Edge profiles: eased, beveled, bullnose, ogee, waterfall
Finish: polished, honed, leathered, brushed
Size: standard slabs 3200 × 1600 mm; custom cuts via CNC
Integrated features: pre‑drilled faucet holes, backsplash, undermount sink cutouts

Packaging and Shipping

Slabs are interleaved with polyethylene foam sheets and secured within wooden crates or steel‑frame pallets. Corner protectors and edge guards minimize impact damage during transit. Each package includes a packing slip with slab ID, dimensions, and inspection certificate.

For export, crates are fumigated per ISPM‑15 standards and sealed with moisture‑barrier film to prevent condensation. Typical lead time is 3‑4 weeks after receipt of approved shop drawings, subject to raw‑material availability.