What should I pay attention to when using a sleeve connection? The cutting head and processing length, and the end of the rebar should be cut flat. These are the main points of the production process. When a sleeve is used, it is a bit laborious to cut the rebar head flat. The center must be aligned first, and the main bar of the interface should be labeled to facilitate the connection of the sleeve, and the main bar can be marked with a number to prevent one end from being less than one head or more. When making it, make it right (the site is required to be large enough). The sleeve connection method for the main bar is greatly shortened in the rebar cage during the lowering process compared to the welding process.