Pipe inner wall sand blaster Mainly used in the field of oil drill ,plane ,shipping, automobile, Chemical industry and build engineering 2) better to used to de-rust on the inner-wall of pipes Between diameter 80-300mm with cleaning grades to Sa 2.5 3) Grinding materials matched with the cleaner : shot ,or sand 4) Abrasive grain mesh :2.5 and 10(0.7mm and 2mm) Different models as following :
| MOdel | for pipe（mm） | Air consumption volume m3/min | Pressure Mpa | Abrasive （mm） | Outside size（mm） | Weight kg |
| HST-250 | 60-250 | 3.1 | 0.5-0.7 | 1 | 140×350 | 4 |
| HST-450 | 200-400 | 6 | 0.5-0.7 | 1.2 | 200×520 | 10 |
| HST-900 | 400-800 | 8.5 | 0.5-0.7 | 1.5 | 350×700 | 28 |