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With the deepening of government reform, the Chinese government has strengthened the functions of public service and social management. Public policies are increasingly concerned with residents’ well-being. However, environmental quality, which can be regarded as a visual indicator to reflect the performance of environmental protection and the quality of public service, is still not optimistic in China. Thus, we wonder if there exist deep relationships among public expenditure, environmental pollution, and subjective well-being. By combining the data from the Chinese Family Panel Survey (CFPS) with relevant government statistics, we find that public expenditure improves residents’ well-being, whereas environmental pollution has a negative effect. More importantly, environmental pollution is found to moderate the relationship between government expenditure and residents’ subjective well-being. These findings not only prove the extra costs of environmental degradation, but also suggest that good performance of environmental governance should be emphasized in promoting human welfare.

The wire for high strength and toughness TMCP steels of submerged arc welding was developed. The low carbon and micro-alloying with Ti-B system was adopted to obtain the acicular ferrite dominated deposited metals. Experimental results show that the carbon equivalent (Pcm) should be higher than 0.17, which can ensure the high strength and high toughness of the deposited metals. In the alloy system, Oxygen and Nitrogen contents, micro-alloyed elements (C, Mn) and its mixture ratio are the key factors that affect the deposited metals toughness. With increasing C, Mn content, the acicular ferrite is increased and toughness is improved. Oxygen and Nitrogen are deleterious to the toughness of deposited metals.