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*Takuya Nagai
Shinko Welding Service Co., Ltd.
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Shinji Kawai
Yamamoto Metal Technos Co., Ltd.
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Masatoshi Shindo
Yamamoto Metal Technos Co., Ltd.
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Shigetaka Okano
Graduate, School of Engineering, Osaka University
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Masahito Mochizuki
Graduate, School of Engineering, Osaka University
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Tetsuo Suga
Joining and Welding Research Institute, Osaka University