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近两年来,为适应我国经济建设的需要,从西德进口了一部分钢筋(BSt42/50RU)。由于对这种钢材的成份、性能不熟悉,对它的焊接特点也不够了解,有些单
In the past two years, in order to meet the needs of China’s economic construction, a part of steel reinforcement (BSt42/50RU) has been imported from West Germany. Due to the unfamiliarity with the composition and performance of this steel, its welding characteristics are not well understood.