iv Reviewers The author and publisher wish to thank the following industry and teaching professionals for their valuable input into the development of Welding Print Reading. Bonnie Adams St. Helens High School St. Helens, OR Michael R. Allen Pennsylvania College of Technology Williamsport, PA Chuck Carr Rice Lake School District Rice Lake, WI Alan Corder Houston Community College Houston, TX Bob Couillard Burlington Technical Center Burlington, VT What’s New? This edition of Welding Print Reading contains numerous enhancements to help students succeed: ❍ Unit 1, Prints—The Language of Industry, has been updated to reflect the latest printmaking and storage practices. ❍ The Metal Specifications section in Unit 12 has been updated and includes additional information on methods of classifying metals. ❍ Unit 14, Welding Symbols, contains a new section on International Welding Symbols. ❍ New Print Reading Activities have been added to Units 2, 5, 6, 7, 14, 15, and 16. ❍ Updated charts in Units 7, 9, and 14 show the latest weld symbols and descriptions. ❍ Updated photos have been added to Units 10, 12, 18, 23, and 24. Clyde Ellertson Fremont High School Plain City, UT Billy M. Elliott, Jr. Southern Crescent Technical College Griffi n, GA Phil Evans Southwest Mississippi Community College Summit, MS Nathan B. Fisher Isothermal Community College Spindale, NC Elliott Hedgepeth Webber High School Pleasant View, UT The Weld-Ed Mission: Enriched Curricula, Enhanced Educators Weld-Ed, in collaboration with business and industry, improves the quality, quantity, and availability of welding technicians through the advancement of educational curriculum and professional development for instructors. To accomplish the mission, the Center’s staff and partners work collaboratively on the development of new and improved curricula in all areas of the materials joining industry. As a result of these efforts, faculty and instructors are provided continuing education opportunities throughout the academic year and summer months. These new programs are specifically designed to train the next generation of workers for the materials joining industry while enhancing the skills of incumbent workers. For more information about Weld-Ed, visit www.Weld-Ed.org Michael D. Lederman Greater Southern Tier BOCES Elmira, NY Joshua Seitzer North Montco Technical Career Center Lansdale, PA Mark Thomas Southeastern Illinois College Harrisburg, IL Robert Tosch Alpena Community College Alpena, MI Robert A. Udy Salt Lake Community College Salt Lake City, UT