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Rail welding

Gas pressure welding

This method heats rails with oxygen and acetylene gas flame and joins the rails pressing the rail joint.

Gas pressure welding


  1. 1Rail joint method with high joint strength and higher reliability
  2. 2Suitable for welding at welding base

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Gas pressure welding in a base

Gas pressure welded zone

Tension gas pressure welding

Using rail tensor and a gas pressure welder, this method controls the longitudinal force of the rail on track by a computer to dispense with additional restressing of rail. It has proven its performance on the Shinkansen.

Gas pressure welding using a tensioner on track

Pressure controller