This short course in welding high and low pressure lines was adapted from military curriculum materials for use in vocational education. The course is designed to teach safety requirements for work with high and low pressure pipelines; pipe welding requirements and specifications; special pipeline repair welding applications; layout of pipe joints; metallic arc welding of carbon steel pipe; and inert gas shielded arc welding of stainless steel and aluminum pipe. The course consists of nine lessons covering 57.5 hours of instruction. The course contains materials for both student and teacher use. Printed materials for the instructor include a plan of instruction for the course and lesson plans for each lesson. These contain an outline of instruction, objectives, activities, materials and tools needed, text assignments, and references. Student materials consist of a study guide containing objectives, information, questions, and references. (This course was designed for students with experience in basic welding.) (KC)