METHOD OF FORMING COVERING PROTECTING LAYER ON JOINT BETWEEN COVERED STEEL PIPES

摘要

METHOD OF FORMING COVERING PROTECTING LAYER ON JOINT BETWEEN COVERED STEEL PIPES A covering protecting layer is formed on a joint between covered steel pipes each having a protecting concrete layer formed on the periphery thereof by a method wherein a heat -shrinkable sheet or the low temperature shrinking type is wrapped around the periphery of the joint; a fused mastic is applied onto the periphery of the heat-shrinkable sheet; and then, the applied mastic is cooling whereby the mastic is solidified to form a covering protecting layer.