1.Pipe pullback Matakan don hana gazawar dawowa: (1) Yi nazarin gani na duk kayan aikin hakowa kafin aiki, da kuma yin binciken gano kuskure (Y-ray ko X-ray dubawa, da dai sauransu) akan manyan kayan aikin hakowa irin su bututu, reamers, da akwatunan canja wuri don tabbatar da cewa babu tsagi...
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