About KOBAYASHI TAKASHI
About トライボロジスト
About flange coupling
About piping (system)
About airtightness
About Safety
About bolt
About force
About gasket
About clamping force
About tightness
About Sealing devices
About Pipeline,air and hydraulic conveyance
About シール
About 最新動向
About 配管系
About フランジ継手
About 密封性能
About 安全性
About 技術動向