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How to remove the PVC gas pipeline?
Jan 21, 2016

How to remove the PVC gas pipeline? 1, pipeline maintenance personnel need to tear open line, must submit a written application, the mine, chief engineer, ventilation, drainage, ventilation, vice President captain signed consent, shall be within the prescribed period of time. 2, remove the pipe work must be ventilated cadres to stare at the scene, a unified command, the scene without ventilation cadres, construction is forbidden. 3, remove the line workers carry wrench tool, must be for copper, prevent the duration and other iron touch