drywall screws on cement board

As for the protection operation of galvanized barbed rope column, replace the column which is corroded or misinterpreted and so on, and place the replacement area from the beginning, and reinforce the column with unstable pile foundation in time. There is also about the protection of galvanized barbed rope itself, to repair the damaged local, will be severely replaced by rust.

Zinc pot workers should be determined to do duty and responsibility. Do not leave the post without leave, always observe the change of hot plating wire galvanized layer, and according to the analysis results, master the asbestos block gap friction, how long it takes to press, replace the pressing face; Adjust the working face; Until all four sides of the asbestos block are used up, maintenance workers will continue to use the block after repair when necessary to reduce the consumption of asbestos block.