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.
详细介绍了通过控制母材质量、焊材质量、焊前准备、焊接参数等，完成转换柱的焊接。
This paper introduces the welding of transformation column by controlling the quality of master materials and welding materials, welding preparation, welding parameters and so on.
焊前的准备及制定合理可靠的焊接工艺规范可以基本保证焊接质量。
The preparation before welding process and the building appropriate and reliable welding process regulation can guarantee the weld quality fundamentally.
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