The welding of high pressure boiler longitudinal weld shall be electric slag welding which may be replaced by improved auto-submerged arc welding when have no electric slag welding.

高压锅炉锅筒纵缝焊接时，采用的焊接设备为电渣焊。在不具备电渣焊的情况下用改进的埋弧自动焊成功的替代了电渣焊。

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And presents two overlay welding processes using strip to obtain a clad material: submerged arc strip cladding (SAC) and electric slag strip cladding (ESC).

而且也给出了获得堆焊材料的两种带极堆焊工艺：一种是埋弧带极堆焊(SAC)；另一种是电渣带极堆焊工艺(ESC)。

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