Updated version of the highly respected Audel brand guidebook that has provided practical references for skilled tradespersons and students for more than 100 years. A study guide for apprenticeship training for plumbers, welders, pipefitters, and steamfitters, as well as the definitive on-the-job resource. Convenient pocket-size guide is specifically designed for use at work, with math charts and metric conversions, photographs, and diagrams to help get the job done quickly and correctly. Topics covered include math and metrics, calculating offsets, pipe welding, automatic fire protection systems, steam heating, hot water and air conditioning systems, refrigeration process, piping, using plastics, using an instrument level, Tungsten inert gas welding, troubleshooting for arc welding, pipe welders’ definitions, and a glossary of terms related to plastic piping. Appendices cover metric conversions, abbreviations, BTU fuel values, drill sizes, measuring and laying out angles, and more.