Phapang Pakeng Tsa Cement Retainers le Bridge Plugs
Mokhoa o Molemo ka ho Fetisisa oa ho cheka le ho sila: Haeba boemo e le ho etsa mesebetsi ea ho cheka kapa ho sila (junk mill), mokhoa o khothaletsoang ke o latelang: Sebelisa tricone Bit(IADC Bit Codes 2-1, 2-2, 2-3, 2- 4, le 3-1) - sebopeho se thata se mahareng. PDC Bit ha e...
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