ड्रिल कैसे करते हैं/Drill Kaise Krte Hain/Drill Machine

ड्रिल कैसे करते हैं/Drill Kaise Krte Hain/Drill Machine‪@e4engineering82‬
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[@awadheshkumar6853]

Sabhi Gauge par ek video banaiye sir

[@e4engineering82]

Bnayenge bhai

[@VivekKumar-gt8to]

What is minimum horizontal distance between two corss country natural Gas pipeline which is parallel to each other.