Umahluko phakathi kwe-Cement Retainers kunye neBridge Plugs
I-Drilling & Milling Best Practice: Ukuba imeko kukwenza imisebenzi yokugaya okanye yokugaya (i-junk mill), isenzo esicetyiswayo ngolu hlobo lulandelayo: Sebenzisa i-tricone Bit (IADC Bit Codes 2-1, 2-2, 2-3, 2- 4, kunye ne-3-1) - ukubunjwa kanzima okuphakathi. I-PDC Bit ayikho...
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