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(Total 1 Products for Spiral Drilling Collars)
API Spiral Drill Collars Well Drilling Tools
It reduces the contract area with the wellface and the steering resistance,which can prevent differential pressure sticking. The drill collar is according to SY/T5144-1997 and API 7-1 " Specification for Rotary Drill Stem Elements" standard, the material uses AISI 4145H alloy structural steel to carry on the deep hole...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.