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国内用液化石油气进行焊接和切割始于70年代，因种种原因没有很好推广应用，90年代切割用乙炔燃气仍占90％左右，基本属单一燃气能源结构。而日本80年代初，液化石油气用量已达到总用气量的61％。我国石油资源丰富，开发利用石油化工的副产品作为焊接和切割燃气具有广阔的前景
The domestic use of liquefied petroleum gas for welding and cutting began in the 1970s, due to various reasons not well popularized and applied, 90% cutting acetylene gas still accounts for about 90%, basically a single gas energy structure. In Japan, the early 80s, the amount of liquefied petroleum gas has reached 61% of the total gas consumption. Our country is rich in petroleum resources, the development and utilization of petrochemical by-products as welding and cutting gas has broad prospects