Abstract: To fix the problem existing with the weld seam tracking mechanism or the slide used by Shandong Shengli Steel Pipe Co.,Ltd.,a precision 3D slide is developed for adjustment of the SAWH pipe welding mechanism and weld seam tracking. Elaborated in the paper are the main aspects of the said slide,covering the structure of the principal part,the technical parameters,the erection type,and the joint type of the welding head mechanism and the advantages thereof. The actual operation of the slide demonstrates satisfactory running and low failure rate which ensures better welding quality and higher welding productivity of the SAWH pipes,and thus,guarantees the appropriate equipment for normal welding operation.