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。
Spiral welded pipe is a strip coil as raw material, often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.
螺旋焊管是以带钢卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。
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.
介绍了双丝单弧预热填丝焊的基本原理，以及双丝单弧预热填丝埋弧焊试验研究结果。
The hardness of welded joints obtained by double-wire submerged arc welding is significantly better than that obtained by CO2 gas shielded. The peak hardness appears in the heat affected zone.
CO2气体保护焊接头的硬度值明显较双丝埋弧焊接头的硬度值高，硬度值在热影响区出现峰值。
The hardness of welded joints obtained by double-wire submerged arc welding is significantly better than that obtained by CO2 gas shielded. The peak hardness appears in the heat affected zone.
CO2气体保护焊接头的硬度值明显较双丝埋弧焊接头的硬度值高，硬度值在热影响区出现峰值。
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