If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. SDA-44 Automatic Integrated Air DTH Hammer Rig Built-in Air Compressor Product: Automatic Integrated DTH Drilling Rig With Built-in Air CompressorDrilling Depth: 28mDrilling diameter :90-130mmAir Compressor: 16m³/min Power: 191KW EngineApplication: widely used in surface quarry and mining blast hole drilling, pre-splitting hole drilling, buffer hole and slope pressure relief hole drilling, and super deep hole drilling. We're here to help,Easy ways to get the answers you need. Mobile Phone: 008618137852864 Email:… Please enable JavaScript in your browser to complete this form.NameYour NameEmail *Your EmailPhone *Your Phone NumberComment or Message *Please include your detailed requirements, so that we can quote the best price accordingly.Submit