Import 20x16 Mm Alumina Ceramic Grinding Column — Buy in wholesale FOB from Supplier in China

The 20x16 mm Alumina Ceramic Grinding Column is a compact industrial grinding component engineered for precision material reduction in abrasive processing environments. This column features a rectangular cross-section measuring 20 millimeters in length by 16 millimeters in width, designed for insertion into grinding mills, ball mills, and pulverizing equipment used in batch and continuous processing operations. The high-purity alumina ceramic construction provides a dense, non-porous microstructure with typical alumina content ranging from 92% to 95%, delivering superior hardness compared to conventional ceramic media. The grinding column exhibits a specific gravity of approximately 3.6 to 3.8 g/cm³, indicating substantial mass for efficient kinetic energy transfer during milling operations.

The material grade commonly employed for this type of grinding column falls within the alumina ceramic family, specifically sintered alpha-alumina with controlled grain size to optimize fracture toughness while maintaining high hardness values in the range of HRA 85-92. The manufacturing process involves dry pressing followed by sintering at temperatures exceeding 1600°C, resulting in a fully densified ceramic body with minimal porosity typically below 0.5%. Available variants include standard-fired products and higher-purity 99% alumina grades for more aggressive chemical environments. The surface finish is typically as-sintered with a roughness value Ra of 1.6 to 3.2 micrometers, though grinding and polishing services can be specified for applications requiring smoother surfaces.

This grinding column serves critical functions in ceramic tile manufacturing, pharmaceutical compounding, pigment grinding, mineral processing, and metal powder preparation. Industries including ceramics production, chemical processing, electronics materials, and aerospace component manufacturing represent the primary buyer segments. The product is sold under flexible MOQ arrangements typical of Chinese industrial exports, with packaging通常采用纸箱加托盘的形式以确保运输安全。Shipping terms commonly offered include FOB Qingdao or CIF to major international ports, with payment terms typically arranged through T/T or L/C at sight.

Zibo Win-Ceramic Material Co. Ltd is located at No.22, Changguo Western Road, Zhangdian District, Zibo, Shandong Province, China, with postal code 255000. The supplier operates from the Shandong province, a established ceramics manufacturing hub in eastern China known for industrial ceramic production. The listing indicates a harbor trust tier classification with a recorded response rate of 0.00% and average response hours listed as zero, suggesting limited recent activity on the sourcing platform or potentially automated listing management.

The supplier profile explicitly identifies this product as an alumina ceramic grinding column without claiming ISO or SGS certification in this specific listing, though the platform description mentions ISO certifications generally. The listing does not disclose company establishment date, annual production capacity, employee count, or export volume. No client references or project portfolios are provided. The address indicates a direct manufacturing location rather than a trading company, though verification of production facilities would require on-site audit.