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 frame of heavy stay column sets for Dongjiang Power Station possesses a great rigidity with large dimension, so its requirements for welds quality and welding deformation are strict.
东江电站大型灯泡贯流式机组机座结构尺寸大、刚性大，对焊缝质量和焊接变形要求较高。
The frame of heavy stay column sets for Dongjiang Power Station possesses a great rigidity with large dimension, so its requirements for welds quality and welding deformation are strict.
东江电站大型灯泡贯流式机组机座结构尺寸大、刚性大，对焊缝质量和焊接变形要求较高。
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