The technical problems, such as the traceability of the construction quality, anti-deformation of shared support, clean control inside the electro-polished tube, and applications of groove pipes, are discussed in this paper, which occur in the pipe construction of balance of nuclear power plant. Furthermore, the corresponding technical measures are established combining with the practical condition, which are proved to be simple and effective by the on-site inspection, providing references for the pipeline construction of balance of nuclear power plant in the future.