It is presented that the inner circle or outer circle of container is regarded as basic referencece to overcome the fissure of displacement and weld backing is utilized to overcome slit nonuniform.

• 介绍了利用内圆和外圆基准法克服组对环缝对接错边、利用衬垫法克服间隙不均匀的方法,找到了利用埋弧焊焊接内环缝和外环缝的最佳施焊位置。