About MARUTA MAKOTO
About 静岡理工科大 理工
About reinforcing bar joint
About structural joint
About thread connection
About compressive stress
About sleeve coupling
About filling material
About tensile strength
About grading (ranking)
About work planning
About qualification
About visual inspection
About ultrasonic flaw detection
About quality control
About mechanical property
About strength
About pressure joining method
About Connections
About Concrete work
About 鉄筋継手
About 機械式継手