Import Brown Fused Alumina F Grain F12-220 — Buy in wholesale FOB from Supplier in China

Yannuo Import & Export Trade Co., Ltd. offers brown fused alumina in F-grain sizing from F12 to F220, a range that covers coarse stock removal through fine precision finishing. The material is produced by bauxite fusion in electric arc furnaces, yielding dense, tough grains with hardness suitable for abrasive tools and surface preparation. The F12-220 span corresponds to particle sizes from approximately 1700 micrometres down to 63 micrometres under FEPA standard sieving, enabling buyers to source multiple grades from a single supplier. This grain size flexibility supports applications across metalworking, automotive, and construction industries where different surface roughness requirements apply.

The chemical stability referenced in the source description relates to the inert nature of aluminium oxide at typical operating temperatures, resisting attack from most acids and alkalis encountered in industrial environments. For F-grain material in the F12-F220 range, standard industry practice requires tight control on coarse and fine tails to prevent oversized particles that cause deep scratches or undersized fines that clog abrasive tools. Typical magnetic iron content for standard brown fused alumina should not exceed 0.05% by weight for precision applications, though buyers should request batch-specific certificates. The density and microstructure of grains in this size range influence cutting rate and wheel life in bonded applications, with angular, blocky grains preferred for heavy stock removal and more fractured grains for finer finishing.

Buyers in the coated abrasives industry use F-grain brown fused alumina in production of sandpaper, flap discs, and abrasive belts where consistent grain embedment in adhesive matrices is critical. Blasting contractors select specific grades within the F12-220 range based on surface profile specifications, with coarser grades for rust removal and finer grades for pre-coating surface preparation. The supplier mentions flexible MOQ options, though exact quantities must be confirmed directly with Yannuo Import & Export Trade Co., Ltd. Packaging and shipping configurations, including bulk bag versus palletised packaging, should also be discussed with the supplier's sales team to match handling equipment at the destination facility.

Yannuo Import & Export Trade Co., Ltd. is located in Luoyang, Henan Province, China, with a registered address at Room 903, Unit 2, Building 20, Kaiyang Garden, North Mudan Avenue, Luolong District. The company holds a harbour trust tier classification on the platform. The response rate is recorded at 0.00% with zero average response hours, indicating no engagement with buyer enquiries through platform messaging. This lack of responsiveness requires buyers to initiate direct contact, potentially through the provided address or by searching for independent business registration records in China.

The source description references ISO and FSSAI certifications, though buyers should independently verify the scope, validity, and issuing body of any claimed certificates, as these are not displayed or linked in the listing. No information is provided about years in operation, manufacturing facility ownership, employee count, annual turnover, or specific export markets served. The company's name suggests a trading focus rather than manufacturing ownership, which may affect pricing structure and technical support capabilities. Buyers should clarify whether Yannuo operates as a manufacturer, a dedicated export agent, or a general trading company when assessing quotation validity and supply chain reliability.