Place of Origin: Fujian, China (Mainland) Brand Name: DUOLENG Model Numbers:s70 s170 s230 s280 s330 s390 s550 s660 s780 s930 Material:alloy steel Usage:shot peening Abrasive Grain Sizes:0.3mm-2.8mm Hardness:standard or special Feature:alloy steel,Cr included Shape:round Density(g/cm3):≥7.20 Color:steel grey packaging:25kg on 1 bag,40 bags on 1 ton wooden pallet. Available in sizes from S170 to S930. We are pleased to bring you a cost saving steel grit abrasive designed specifically for use in blastrooms. Duoleng Grit is not a conventional steel grit abrasive. Conventional steel grit abrasives are produced by a casting process. This manufacturing process induces cracks, porosity and hollows into the grit particles. These imperfections lead to a fast break down rate of the abrasive and slower cutting speeds. Duoleng Grit is different. Duoleng Grit is manufactured from forged steel offcuts used in the manufacture of bearings. This material is inherently higher density and a lot tougher than cast steel, which leads to a much longer abrasive life and higher production rates. Less abrasive consumption and faster cleaning speeds result in direct cost savings to you. Although manufactured from a higher quality and cleaner steel the purchase price of Duoleng Grit is comparable with conventional steel grit.