High pressure Sandblast machine , 1) working pressure :5-8bar 2)blasting abrasive :glass beads ,aluminum oxid,steel grit High pressure sandblast machine Application1. The machine can clear mold , forging and casting parts . welding parts ,heat parts and machine processing work pieces 2. Deal with Rough surface , remove oxide ,residual salt and burr . and also can be used Pretreatment process ...