着重研究了焊接件材料的焊接性并确定工艺评定的试件形式、焊接方法、焊接参数、焊接顺序以及接头的检验和评判。通过焊接工艺评定，保证了超级管道一快关隔离阀焊口在焊接工程中的焊接工艺正确可行，同时按要求进行焊工培训和技术评定，取得了良好的效果，从而为提高工程的质量，保证工程可靠性提供了极重要的条件。 Emphasis was placed on the weldability of the weldment material and the form of the test piece, the method of welding, the welding parameters, the order of welding and the inspection and evaluation of the joint were determined. Through the welding process assessment, to ensure that the super-pipeline quick-closing isolation valve welding mouth welding process in the welding process is correct and feasible, at the same time as required welder training and technical evaluation, and achieved good results, so as to improve the quality of the project, to ensure Engineering reliability provides the most important conditions.