Pipe-inspection device propelled by an Archimedes screw
RAILWAY SYSTEM FOR REMOTE WORK, REMOTE RAILWAY SETTING METHOD, AND REMOTE RAILWAY SETTING APPARATUS
APPARATUS FOR PREVENTING DAMAGE TO A PIPE PENETRATION PART OF VESSEL AND VESSEL INCLUDING THE SAME
COLMATAGE DE FISSURE DANS UNE PISCINE D'INSTALLATION NUCLEAIRE, UTILISANT UN ROBOT
DISPOSITIF D'INSPECTION DE CANALISATIONS À PROPULSION PAR VIS D'ARCHIMÈDE
Crack pepair method for inhibiting crack growth in wall portion by using ultrasonic wave
Liquid tank inspection including device for launching submersible