As a welding method of high efficiency and low energy consumption, doublearcwelding has a favorable foreground in the practical production.
双弧焊接作为一种高效节能、优质经济的焊接工艺方法，在实际生产中具有良好的应用前景。
2
On the current technical level, the double wire submerged arc narrow groove welding technology invented by Harbin welding Institute was recognized by the market.
就目前的技术水平而言，国内的哈尔滨焊接研究所的双丝埋弧窄间隙焊接技术较为被市场所认可。
3
This article introduces the principle of double wire single arc preheating wire filling welding, and the test result of the double wire single arc preheating wire filling submerged arc welding.