Hejian Deris Petroleum Drilling Equipment Co.,Ltd.

AccueilvidéoYoutube vidéoCompanynew used for water well drilling 12 1/4" TCI tricone bits sealed bearing iadc537 roller cone bit
AccueilvidéoYoutube vidéoCompanynew used for water well drilling 12 1/4" TCI tricone bits sealed bearing iadc537 roller cone bit

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