This curriculum guide contains 18 units for a course to assist apprentices in learning the pipefitting trade. Introductory materials include lists of suggested audiovisual materials, competencies, and textbooks and approximate times for each unit. Each instructional unit includes some or all of the following components: competencies, instructional objectives, learning activities, application exercises, evaluation/checkout, list of equipment, list of learning materials, audiovisual materials, and resources. Answers to exercises and evaluations are appended to each unit. Units cover introduction to the trade; brazing and soldering; chemical handling; hot water heating systems; hydraulics; insulation; mathematics; physics; pipe hangers and supports; pipe welding and welding--basic skills; pneumatics; process pipe drafting; process piping fabrication; process steam systems; refrigeration and air conditioning; rigging; templet development; and valves, packings, and gaskets. Copies are provided of the apprentice guides for each of the units. These list the competency; instructional objectives; learning activities; and evaluation/checkout. An attached handbook for supervisors includes a series of application exercises for the apprentice. They correspond with competencies and learning objectives learned in the classroom. (YLB)