... 砾石充填剪切安全接头 out safety joint 剪切销钉式安全接头 shear pin safety joint 油封式震击器安全接头 sealed jar safety joint ...
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shear pin tubing safety joint 剪切销式油管安全接头
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To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.
为了克服剪钉式和反扣式两种安全接头的不足，研制出一种滑套式井下安全接头。
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