In former report, we confirmed the virtues of the Low Temperature Stress Relieving method in small test pipes. In this report we applied this method to large pipes. At the same time, the partial annealing method by induction heating was done. As to the object of annealing method, we can consider the following two objects; stress relieving and softening of the heat affected zone. But in the welding of mild steel plate, it will be unnecessary to consider the softening of the heat affected zone

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... e Fig. 16 ), and the stress relieving will be main object of annealing method. In this point, the Low Temperature Stress Relieving method will be applied in place of the an nealing method.