This little book is big on answers Whether you re an apprentice in the piping trades or a seasoned tradesperson, you ll find this completely revised and updated guide has answers to the questions you ll encounter on the job. This little book is big on answers Whether you're an apprentice in the piping trades or a seasoned tradesperson, you'll find this completely revised and updated guide has answers to the questions you'll encounter on the job. Math and Metrics. Calculating Offsets. Pipe Welding with Oxyacetylene and Arc. Automatic Fire Protection Systems. Steam Heating Systems. Hot-Water Heating Systems. Air Conditioning and Refrigeration. Process Piping Using Plastics. Grooved-End--Plain-End Piping Systems. Learning to Use an Instrument Level. Pneumatic Control Systems. Gas Piping. Tungsten Inert Gas Welding. Trouble-Shooting Tips for Arc Welding. Pipe Welders' Definitions. Definitions of Heating and Air Conditioning Terms. Glossary of Terms Relating to Plastic Piping. Appendix: Miscellaneous Information.