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Shanxi Weigao Petroleum Drilling Tools Co.,Ltd
drill collar;drilling collar;drill collar manufacture;drill pipe
 
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Drill Collar
Specifications1.Used for oil well drilling 2.OD:60~139.7mm 3.WT:7.11~10.54mm 4.Standard:API 5DPNo.SizeGradeUpsettingStan
Square Kelly
Our company offers square kellys. Kellys are available up to 46 feet long.Our kellys are made from 4145H modified alloy
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