随着全世界对能源需求的不断增加,以及对国家石油安全的关注,我国也在加速推进实施石油储备战略。焊接技术作为石油和石化工程建设的重要技术手段,在伴随石油石化行业快速发展的过程中,虽然比其他行业从技术水 With the increasing demand for energy in the world and the concern about the national oil security, our country is also accelerating the implementation of the oil reserve strategy. Welding technology as an important technical means of petroleum and petrochemical engineering construction, along with the rapid development of the petroleum and petrochemical industry in the process, although more than other industries from technical water