ERW管与埋弧焊管的焊接方式有显著的不同，采用的是无填充金属的压力焊接方式， 焊缝中没有填充其他成分，靠高频电流的集肤效应和临近效应， 使板边瞬间加热到焊接温度，由挤压辊挤压形成锻造组织的焊缝。 高品质的钢管要求采用焊缝线上或离线热处理，使焊区组织细化， 优质ERW焊管的焊缝可以达到与母材相同的韧性水准，这是埋弧焊接工艺无法达到的。
ERW pipe and submerged arc welded pipe are welded in different ways. Pressure welding without filling metal is adopted. There is no filling other components in the weld. By skin effect and proximity effect of high frequency current, the edge of the plate is heated instantaneously to the welding temperature, and the forged weld is formed by extrusion roll extrusion. High quality steel pipe requires on-line or off-line heat treatment to refine the structure of weld zone. The weld of high quality ERW pipe can reach the same toughness level as the base metal, which can not be achieved by submerged arc welding technology. 电熔焊 Electric fusion welding 的第一字母的缩写
Abbreviation for the first letter of Electric fusion welding
埋弧焊(SAW)-电熔焊(EFW)的一种，就是通过一个或几个自耗电极与工件之间对金属加热使金属之间结合中的一种工艺，电弧使金属和填充材料充分融化，不需要加压，填充金属部分勤工全部来自于电极。
Submerged Arc Welding (SAW) - Fusion Welding (EFW) is a process that combines metal by heating one or more consumable electrodes with the workpiece. The arc melts the metal and filler material sufficiently without pressure. The filler metal part of the worker comes from the electrode.
熔化气体保护焊(GMAW)--电熔焊(EFW)的一种，这种工艺与埋弧焊类似，但它的保护是来自于惰性气体，效果会更好。
Melting gas shielded welding (GMAW) - a kind of electric fusion welding (EFW). This process is similar to submerged arc welding, but its protection comes from inert gas, and the effect is better.
螺旋焊---这也是埋弧焊的一种，带有一条螺旋焊缝。
Spiral welding - This is also a submerged arc welding with a spiral weld.
