30m Drilling Rig Kelly Bar Foundation Rotary Equipment 355-4*11

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Beijing Jietaihongli Technology Co., Ltd.

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30m Drilling Rig Kelly Bar Foundation Rotary Equipment 355-4*11

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30m Drilling Rig Kelly Bar Foundation Rotary Equipment 355-4*11

Foundation Rotary Drilling Rigs Equipment Kelly Bar 355-4*11 OEM/ODM Both Material Q345B /Q460D / 35CrMo With Special Heat Treatment /27SiMn Manufacture Process Robot Welding ,Gas Shielded welding , ...

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30m drilling rig kelly bar

355mm drilling rig kelly bar

foundation rotary equipment interlocking kelly bar

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