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H G Thorsness Trust


Blue Book of Fitter's Welder's Pattern & Layout Manual
SKU: A111

Publication Date: 1989 / Revised 1997
Book Size: 4 x 5.25
Pages: 137
Edition: 10th
Cover: Soft Bound
Author: Thorsness

Click here for a list of charts and pipe sizes covered in this book.


The contents of this handbook pertains mostly to pipe fabrication, "PATTERNS". It is felt there is a great need for pattern knowledge in the form of an easily carried hand-book, Where accuracy in fabrication is required. especially in stainless steel piping, the development of patterns is recommended. Special effort has been put forth to simplify the method used in making these patterns. Therefore with a small amount of study and a few needed tools such as a divider and a "T" Square, efficiency may soon be achieved. In learning to develop these patterns, it is suggested the beginner start with Figures 1-A, to "5" inclusive. Use material large enough to accommodate the drawing as shown in Figure #1. Thio sketch io a completion of figures 1-A to five (5). Figures 6-7-8 and 9 may be an aid in pattern development, as it is a necessity to divide quarter circles into equal parts. First learn to do this, then complete patterns of figure #1 several times. Each effort will become easier. Learn to draw these first two patterns and no trouble will be had with the others in this Book.

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