同时将热收缩带与管体涂层搭接处清洁并加热、用钢丝刷将其打毛，完毕后，应

At the same time, clean and heat the overlap between the heat shrinkable tape and the tube body coating, and use a wire brush to roughen it. After finishing, remove the scum. Since the construction of the anti-corrosion coating is PE, the roughening depth and density of the coating is about 1mm, and the roughening is vertical and diagonal, as shown in Figure 1.

At the same time, the heat shrink belt and the tube coating tie to clean and heat, with a wire brush to make it hair, after the completion, should remove the slag. Since the construction anti-corrosion coating is PE, so the coating hair depth and density is about 1mm, along the vertical and diagonal hairing, as shown in Figure 1.

At the same time, clean and heat the lap joint of the heat shrinkable belt and the pipe body coating, roughen it with a wire brush, and then remove the scum. As the anti-corrosion coating is PE, the roughening depth and density of the coating is about 1 mm, which is roughened along the vertical and oblique direction, as shown in Fig. 1<br>