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What is the hardness of the quartz sand?

The quartz sand has a Mohs hardness of 7.5.

4-8mm Natural Quartz Sand Particles for Drinking Water Filtration

Name: 4-8mm Natural Quartz Sand Particles for Drinking Water Filtration
Brand: Gongyi Yuying Refractory Co., Ltd.
SKU: 2044697452

Henan, ChinaGongyi Yuying Refractory Co., Ltd.

US$93.00-275.00

1 Ton

Sample price:US$95.00/kg.Request sample

Product profile

Customization

Available

Certification

ISO

Application

Chemical, Metallurgy, Glass

Model NO.

quartz sand

Type

Quartz Stone

Color

Black

Sio2

99.2

HS

3207400000

Shape

Quartz Stone & Sand

Al2O3

0.11%

Cao

0.03%

MGO

0.03%

Purity

99.9%

Grade

Industrial Grade

Sample

Availiable

Hardness(Mohs

7.5

Ash

Breakage Rate

0.3%

English Name

Quartz Sand Filter Material for Water Treatment

Acid-Base Resistance Property

98%

Transport Package

According to Customer’ S Request

Specification

0.5-1, 1-2, 2-4, 3-5, 3-6, 4-6, 4-8mm, 8-30mesh

Trademark

Origin

China

HS Code

2818109000

Production Capacity

50000tons

Key features

High Purity Quartz: 99.9% purity with 99.2% SiO2 content for effective filtration.

High Hardness: Mohs hardness of 7.5 ensures durability and long service life.

Low Breakage Rate: Breakage rate is only 0.3%, ensuring stable filtration performance.

Corrosion Resistant: Strong acid-base resistance property of 98% for chemical water treatment.

Flexible Customization: OEM and ODM services available with flexible customization options.

ISO Certified: Product meets ISO certification standards for quality assurance.

Multi-Industry Use: Suitable for water filtration, glass, metallurgy, and construction.

Fast Delivery: Delivery within 3-25 days after payment based on order quantity.

Company profile

$Gongyi Yuying Refractory Co., Ltd.$

Quality AssuranceProduction Process VisualizationManagement CertificationR&D Capabilities

Gongyi Yuying Refractory Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Flexible customization CertifiedExport Year: 8 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤1.80h

AI-Powered supplier vetting

SummaryThe supplier demonstrates established manufacturing capacity, producing activated carbon and multiple abrasive, refractory, and water-purification materials. It holds ISO9001:2015, ISO45001:2018, and ISO14001 certifications, and reports quality assurance, ODM, OEM, and flexible customization capabilities. However, several operational controls are weak or undocumented: raw-material traceability is absent, finished-product inspection is random, and corrective-action, complaint-handling, and supplier-assessment procedures lack written records. The supplier has no stated inventory, overseas warehouse, overseas agent or branch, showroom, or overseas service coverage. Innovation evidence is limited, with no new products in the last year, no SDK, and one R&D engineer. Financial records are only identified by year, without substantive financial metrics, so financial credibility cannot be determined.

Supplier typeThe supplier appears to be a manufacturer of industrial materials, with listed crushing, grinding, and classifying facilities and stated products including activated carbon, abrasive materials, refractories, and water-purification materials. The information supports a manufacturing supplier classification rather than a pure trading or service-provider classification.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications in both sustainability and management-system records. These certifications explicitly support formal quality, occupational safety, and environmental management coverage.

R&D capabilityThe supplier reports no available SDK, no new products launched in the past year, and one R&D engineer. Although it offers ODM services, the explicit evidence indicates limited demonstrated internal innovation output.

Production capacityThe supplier states annual activated-carbon productivity of 200,000 tons and describes annual output of abrasive materials, refractories, and water-purification materials, supported by multiple production facilities and lines. However, it reports no in-stock capacity and no valid manufacturing-capacity contract with affiliated subcontractors, so production scale is demonstrated but fulfillment safeguards are incomplete.

Customization capabilityThe supplier explicitly reports flexible customization, ODM availability, and OEM capability for popular brands. These three capabilities directly support customized design and branded manufacturing requirements.