Shandong kaitai industrial technologies co. Ltd£¨is also called shandong kaitai metal abrasive co., ltd £© is the biggest manufacturer of metal abrasive. The main products are cast steel shot (s780 s660 s550 s460 s390 s330 s280 s230 s170 s110 s70), cast steel grit (g10 g12 g14 g16 g18 g25 g40 g50 g80), steel cut wire shot (cw1.0 cw1.5 cw2.0 cw2.5), steel cut wire shot, stainless steel shot, stainless cut wire shot, aluminium shot, zinc shot, copper shot, 80 kinds of abrasive products.Hardness: gp 42-50hrc gl 56-60hrc gh 63-66hrc Micro structure: tempered martensite or sorbite Chemical composition: c= 0.70-1.20% mn= 0.60-1.20% Si =0.40-1.20% s0.50% p0.50%