【摘要】 详细介绍了高压输送管道全位置下向焊操作工艺。采用文中介绍的工艺进行焊接能提高生产效益,降低焊接成本,焊接质量可靠,焊缝成形美观,该工艺方法易掌握,值得推广。更多还原

【Abstract】 The downward welding technique used for installation of transportation pipeline is introduced which possesses the advantages like easy operation, high efficiency, good weld quality and smooth bead surface, etc.更多还原