churn drilling meaning in Hindi

Examples

1. Hand churn drill
2. Tool that needs to be prepared during the installation : churn drilling , iron hammer , iron chisel , thread hammer , tapeline ,
3. Tool that needs to be prepared during the installation : churn drilling , corner mill machine , welding machine , tapeline , plumb bob , glue pincers , iron chisel , 810 expansion bolt , cross and subtraction sign screw driver etc