Model AJ safety joint is a specialized joint which consists of two parts.The specialized joint takes protactive effect for drilling stem in drilling,repairing and test oil(gas)engineering,etc.It is used to treat well accident and used to be mid-way test of drilling and coring.Model AJ safety joint has two kinds of right-hand thread and left-hand thread.Other parts and specifications of two kinds of safety joints are the same excect screw rotary direction opposition.

异形接头

H型安全接头

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