pipe thread ring
... API drill pipe thread 美国石油学会标准钻杆螺纹 pipe thread ring 管螺纹环 Straight pipe thread 直管螺纹 ; 直管罗纹 ...
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管接头，该管接头包括接 头管和压盖，压盖和接头管通过螺纹可拆卸式连接，接头管的端头部设置有卡 环座；
The pipe joint comprises a joint pipe and a press cover detachably connected with the joint pipe through screw thread, wherein, a clamp ring base is arranged on the head section of the joint pipe;
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