Import 50-100mm Steel Grinding Balls For Ball Mill — Buy in wholesale FOB from Supplier in China

These 50-100 mm steel grinding balls are forged or rolled grinding media designed for ball mill comminution in mining, cement, and power generation industries. The source data specifies hardness of HRC 60-65 measured at both surface and volumetric locations, indicating through-hardening rather than case-hardening. Shandong Huamin Steel Ball Joint-stock Co., Ltd. states the use of special steel materials to achieve high hardness, high impact toughness, and wear resistance. The size range spans 50 mm to 100 mm diameter, suitable for primary and secondary grinding circuits in sag and ball mills processing ore from copper, gold, iron, and other mineral deposits. No specific alloy composition, carbon content, or microstructure specification is provided in the source, so buyers must request mill certificates with chemical analysis and Charpy V-notch impact test values.

The HRC 60-65 hardness range positions these grinding balls in the premium segment of forged media, where higher hardness correlates with lower wear rates in abrasive slurry environments but requires matching mill liner hardness to avoid accelerated liner consumption. The absence of breakage claims suggest controlled heat treatment and tempering processes that balance hardness with retained austenite levels and residual stress management. Standard industry practice for this product category includes quenched and tempered alloy steel with chromium content typically between 0.5% and 2.0%, though the supplier does not confirm this. Surface integrity, including absence of laps, seams, and decarburisation, is critical for fatigue life in high-impact cataracting conditions within rotating drums.

Typical buyers include mining operations, cement plants, thermal power stations with pulverised coal mills, and mineral processing engineering firms specifying grinding media for EPC contracts. The 50-100 mm diameter range serves coarse grinding where feed size exceeds 25 mm and P80 target sizes are in the 150-300 micron range. Applications span copper-molybdenum porphyry circuits, iron ore pellet feed preparation, gold ore cyanidation feed grinding, and clinker cement milling. Shandong Huamin Steel Ball Joint-stock Co., Ltd. does not list MOQ, price, lead time, packaging, or Incoterms in the available data, so all commercial terms require direct confirmation. The supplier is located in Yangjun Village, Guanzhuang Town, Zhangqiu District, Jinan, Shandong Province, with a harbor trust tier and imported supplier tier designation.

Shandong Huamin Steel Ball Joint-stock Co., Ltd. is located in Yangjun Village, Guanzhuang Town, Zhangqiu District, Jinan City, Shandong Province, China, postal code 250217. The company holds both a harbor trust tier and an imported supplier tier on the platform, suggesting some degree of verification and import-export operating history. No response rate or average response time is recorded, so communication patterns must be established through direct contact. The source profile does not disclose year of establishment, registered capital, production capacity, number of employees, annual output tonnes, or export markets served, so buyers should request this information along with business licence and export licence copies during qualification.

This listing focuses on a single grinding media product line with emphasis on hardness and wear performance. The joint-stock company structure implies shareholder ownership, though the exact equity arrangement is not stated. Buyers should verify whether Shandong Huamin operates its own forging and heat treatment facilities or sources from subcontracted mills, as this affects quality consistency and audit reliability. Requesting ISO 9001 certification, environmental compliance documentation, and reference customer lists in the same industry vertical is standard due diligence. The absence of any stated commercial terms means every procurement parameter, from sample provision to volume pricing, requires explicit negotiation and documentation.