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Spiral Drill Collar

Shenlong drill collars are manufactured from 4145H modified steel.Drill collars are bored and drifted to API Spec7-1 and fully heated to meet or exceed the mechanical property requirements of API Spec7.Hardness range of 285-341HB and a charpy V notch impact value of 54joules are guaranteed one inch below the...

Keywords: Drill collar drill pipes drilling rig prtroleum pipes stabilizer
Categories： Industrial Supplies > Others

Henan Shenlong Petroleum Drilling Tools Co.,Ltd China

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