Flash-Butt Welding for Railways

Flash-butt welding joins rails by passing a high electric current through the rail ends and then forging them together under pressure, without any filler metal. The result is a homogeneous, high-strength weld that is well suited to continuous welded rail on mainline, metro and light rail track. SPIS Railways Construction performs flash-butt welding as part of its track construction and maintenance works in Israel, and uses thermite welding where site conditions require it.