Import Black Fused Alumina — Buy in Bulk from Supplier in China

Zhengzhou Integrity Industry Co., Ltd. supplies black fused alumina, a fused aluminium oxide abrasive produced in electric arc furnaces from bauxite with iron-bearing additions that yield its characteristic dark colour. The material is offered in multiple grades for polishing and finishing metal surfaces, with consistent grain size distribution as stated in the source data. Its hardness and toughness derive from the alpha-alumina crystal structure formed during fusion at temperatures exceeding 2000 degrees Celsius, making it suitable for demanding surface preparation work. The supplier, based in Henan Province, lists this material with flexible order arrangements and references ISO and SGS certification claims that buyers should independently verify before contracting.

The chemical composition of black fused alumina typically contains aluminium oxide at 62-75 percent, with titanium oxide at 2-4 percent and iron oxide at 6-10 percent, though these ranges are standard for the commodity and should be confirmed against the supplier's actual batch certificates. The material's low friability compared with white fused alumina permits repeated recycling in blasting operations, a cost factor for industrial users. Available grain sizes span coarse macro-grits through micro-grit powders, with FEPA-standard gradings from F8 to F220 and finer micron sizes common in the trade. The dark colouration indicates higher iron content than white or pink variants, which influences its performance characteristics in specific metal-finishing contexts rather than indicating inferior quality.

Primary applications include surface preparation, grinding, and polishing across automotive, aerospace, and general metalworking sectors, where the fracture pattern of black fused alumina produces a consistent surface profile. Buyers typically specify this material for blast cleaning of castings, preparation of welded joints prior to coating, and fine finishing where substrate damage must be minimised. The supplier indicates availability under FOB and CIF Incoterms, with minimum order quantities negotiable according to production requirements. Importers should request sieve analysis certificates, magnetic separation verification, and moisture content testing to confirm material meets specification before shipment departs Chinese ports.

Zhengzhou Integrity Industry Co., Ltd. is located at Zhongyuan New Castle, Gongren Road, Zhengzhou 450006, in Henan Province, China, a region with established refractory and abrasive manufacturing infrastructure. The supplier holds an 'imported' tier designation and 'harbor' trust tier, with a response rate of 0.00 percent and zero average response hours recorded. These metrics suggest limited active engagement through the platform channel, and buyers should anticipate direct communication challenges or plan for alternative contact methods. The company name indicates a focus on industrial materials, though the exact scope of in-house manufacturing versus trading is not disclosed in the available profile.

The listing does not state founding year, employee count, annual revenue, registered capital, or specific factory certifications with scope details. No named clients, export destinations, or production capacity figures are provided. Buyers should conduct due diligence including business licence verification, factory audit where possible, and request of original certification documents rather than relying on claims. The supplier's address in Zhengzhou places it within China's central logistics network, with access to rail and port connections for export shipment.