The welding preparation of city gas pipeline, welding technological requirements and control for factors effecting welding quality are analyzed.
分析了城市燃气管道的焊前准备、焊接工艺要求以及对影响焊接质量诸因素的控制。
The welding preparation of city gas pipeline, welding technological requirements and control for factors effecting welding quality are analyzed.
分析了城市燃气管道的焊前准备、焊接工艺要求以及对影响焊接质量诸因素的控制。
应用推荐