管道焊接不得使用氧乙炔焰焊接。

Oxyacetylene flame can' be used for welding of pipeline.

提出了氧乙炔焰铝丝喷涂普碳钢灼勺工艺及适宜喷涂参数。

This article expounds Al coating technology and parameter chosce by analysing the oxyacetylene heat Al coating of iron frying Pan.

当采用氧乙炔焰或等离子切割时，切割后必须除去影响焊接质量的表面层。

If oxyacetylene flame or plasma is adopted, surface coat that can impact welding quality shall be removed after cutting.