Leading Fused Silica Manufacturer | High Purity A & AB Grade
ZNH Refractories Co.,Ltd - Reliable Exporter to America, Europe, and Global Markets
About Us
25 Years of Manufacturing Excellence in Fused Silica
ZNH REFRACTORIES CO., LTD is a professional manufacturer and exporter from Zhengzhou, China. We specialize in high-purity fused silica (A, AB, and B Grades) for foundry, investment casting, and refractory applications. Our products meet strict international standards with stable quality control
Our fused silica is widely used in foundry molding, investment casting, refractory linings, thermal insulation and high-temperature industrial applications.
Our Fused Silica Products
Industries We Serve! Foundry & Casting Refractory Industry Thermal Insulation Steel & Metallurgy Industrial Applications
High Purity Fused Silica Sand
Low thermal expansion, high purity silica sand for foundry and refractory use.
Fused Silica A Grade 20–50 Mesh
Fused Silica A Grade 50–100 Mesh
Fused Silica A Grade 20–50 Mesh
Fused Silica A Grade 50–100 Mesh
High Purity Fused Silica Powder
Fine particle fused silica for precision casting, coatings and insulation.
Fused Silica A Grade 200 Mesh
Fused Silica AB Grade 200 Mesh
Customized Fine Powder Sizes
Fused Silica A Grade 200 Mesh
Fused Silica AB Grade 200 Mesh
Customized Fine Powder Sizes
Customized Grades (High Purity Fused Silica A, AB, B)
Particle size and chemical composition customized to customer requirements.
Fused silica AB grade 0.2-0.5mm
Fused silica AB grade 0.2-0.1mm
Fused silica B grade 20-50mesh
Fused silica B grade 200mesh
Fused silica AB grade 0.2-0.5mm
Fused silica AB grade 0.2-0.1mm
Fused silica B grade 20-50mesh
Fused silica B grade 200mesh
Fused silica A grade 4-10 Mesh
Coarse fused silica granules with high purity and excellent thermal stability,
ideal for foundry and refractory applications requiring strong permeability.
Fused silica A grade 20-50 Mesh
Medium-size fused silica sand offering low thermal expansion and consistent quality,
widely used in investment casting and shell molding processes.
Fused silica A grade 50-100 Mesh
Fine fused silica sand with controlled particle size distribution,
suitable for precision casting and high-temperature refractory formulations.
Fused silica AB grade 0.2-0.5mm
Medium-grain fused silica offering a balanced combination of thermal stability
and cost performance for foundry and refractory applications.
Fused silica AB grade 0.2-0.1mm
Controlled particle size fused silica suitable for general casting
and refractory formulations requiring consistent grain distribution.
Fused silica AB grade 200mesh
Fine fused silica powder with uniform particle size,
ideal for precision casting, coatings and industrial filler applications.
Fused silica B grade 0-0.2mm
Fine B Grade fused silica powder providing stable performance
for general foundry, refractory and industrial filler applications.
Fused silica B grade 20-50 Mesh
Cost-effective fused silica sand suitable for large-volume
foundry and refractory applications with consistent quality.
Fused silica B grade 200mesh
Economical fused silica powder designed for industrial uses
where reliable performance and cost efficiency are required.
Your Trusted High-Purity Fused Silica Manufacturer
Applications
- Foundry & Metal Casting
- Investment Casting
- Refractory Materials
- Glass & High-Temperature Industries
Why Choose Us
Stable Quality
Strict quality control from raw material to finished products.
Export Experience
Serving customers in Europe, America, South America and Asia.
Technical Support
Professional support for material selection and application.
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