1. Although the lining plastic is relatively soft when punching, it is more troublesome to forcibly use a rigid drill bit to solve it, and it is easy to damage the steel-lined plastic pipe in the original pipeline, and the corners are not easy to be neat, so it is recommended to combine a utility knife to open the hole.
2. During the opening process, the plastic residue lined with plastic is easy to fall into the original pipeline, so more attention should be paid during the operation, otherwise it will cause the end of the water point to be blocked.
3. Electric (gas) welding tools can not be used to punch or install branch pipes, because that will destroy the plastic lining of steel-lined PTFE pipes, and the connection of branch pipes should be connected by groove special pipe fittings.
