Oxyacetylene flame can' be used for welding of pipeline.
管道焊接不得使用氧乙炔焰焊接。
2
Welding and cutting in 1949, Beijing has geo-drilling, electric welding and cutting etc oxyacetylene flame manual operation.
焊接与切割1949年，北京已有气焊、电弧焊及氧乙炔火焰切割等手工作业。
3
The method and technology of oxyacetylene flame braze welding for main cable wrapping at Shantou Bay Bridge were introduced, and the difficulties of the welding were analyzed.