Top Drive Gooseneck 7 5/8 REG Oilfield Saver Sub
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... bottom of the kelly or topdrive and onto the rest of the drillstring. When the hole must be deepened, and pipe added to the drillstring, the threads are unscrewed between the saver sub and the rest of the drillstring, as opposed to between the kelly or...
Xi'an TianRui Petroleum Machinery Equipment Co., Ltd.
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API Top Drive Parts Saver Sub For Oilfield TDS 11SA CANRIG Top Drive
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...er the special heat treatment process to achieve the desired hardness and strength and impact resistance. API Specification Top Drive Saver Sub For Oilfield Specification Item O.D. I.D. OAL Connection (mm/inch) (mm/inch) (mm/inch) API 1 187(7-23/64) 44.5(1...
Topland Oilfield Supplies Ltd.
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