2018-09-262018-09-262018http://hdl.handle.net/20.500.12091/349Tubing can develop holes when it is punctured. Holes allow air or liquid to leak. Holes cause machines to run inefficiently. A big hole can prevent a machine from working. Small holes waste energy. Holes are easy to find. Holes can be patched. If holes are not repaired the tubing may deteriorate.en-USPlumbingBTA SkillsArticle