本文主要介绍焊管CO2气体保护焊单面焊双面成形焊接工艺技术、焊接参数及施焊要点等。所编制的工艺实践效果好,希望能为焊接培训及生产提供参考。 This article mainly introduces welding CO2 gas shielded welding single-sided welding double-sided forming welding technology, welding parameters and welding points and so on. The preparation of the effect of good practice, hoping to provide a reference welding training and production.