About OTA AKIHIKO
About 金材技研
About BOLLER C
About 金材技研
About KONNO TAKESHI
About 金材技研
About NISHIJIMA SATOSHI
About 金材技研
About 溶接学会全国大会講演概要
About pressure vessel steel
About Weldability,weldability test
About Mechanical properties
About 長寿命
About 疲れ設計
About 採用
About 試験法
About ひずみ制御
About 優位性