Next, a protective layer of wire called  skid wire is spiralled around each one to protect the paper from damage and allow for  easy sliding along the pipe during installation.

接下来，在每根纸周围盘旋一层称为防滑线的金属丝保护层，以保护纸张免受损坏，并允许在安装过程中沿着管道轻松滑动。