External aligning device for oil and gas pipeline construction pipe orifice

An external aligning device for oil and gas pipeline construction pipe orifices relates to a pipeline construction tool and comprises a main frame and adjusting blocks, the main frame and the adjusting blocks are made of aviation alloy aluminum 7075 materials, the main frame is two full circles formed by four semicircles through connecting plates, and the adjusting blocks are symmetrically fixed on the main frame through screws or welding. The front and back of the adjusting block are provided with top columns adjusted by bolts, and alignment and opening alignment of the pipeline are achieved through the front and back top columns. The external aligning device for the pipeline is used for aligning and aligning by utilizing the external diameter of the pipeline when the long-distance pipeline is butted, has the characteristics of light weight, capability of meeting argon arc welding bottoming welding structurally and the like, can realize quick aligning of the pipeline, is convenient to operate, good in aligni