Blue Book of Fitter's Welder's Pattern & Layout Manual

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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.

  • Weight
    0.32 lbs
  • SKU

Table of Contents:

Lateral Pattern Illustration-For All Pipe Size Diameters
Lateral-Pattern Illustration-Showing Procedures
Lateral-Pattern Layout-For Pipe Of Equal Or Unequal Diameters
Quarter Circles-Method Of Dividing Into Equal Parts
Lateral-Pattern Layout-For Equal Size Pipe, 45° and 60° (Dog) Turn
Tee-Hole and Branch Pattern Layout, Equal Size Pipe 90° Branch.
Tee-90 Degree Branch. Patterns Equal Or Unequal Size Pipe.
Saddle-Off-Center (Tee) Header and Branch Patterns
Lateral-L-Off-Center (Branch) Layout, Unequal Size Pipe
Tube Turn-Branch Pattern Equal Or Unequal Size Pipe
Tube Turn-Reduced Branch Pattern,
Tee-Patterns For Branch and Header Equal Size Pipe
Orange Peel-Pattern Layout
Eccentric Reducer-Pattern Or Layout On The Pipe
Concentric Reducer-Measurements In Inches, A B and C.
Tube Turn-Layout Directly On The Pipe. Three Piece 90°
Pattern-45° Angle Out. Half Pattern
Tube Turn-Layout Directly On The Pipe. Three Piece 90°
Pattern-22 1/2° Angle Cut. Half Pattern
Tube Turn-Layout Directly On The Pipe. Four Piece 90°
Pattern-15° Angle Out. Half Pattern
Trigonometry Table.
Right Triangle Finding Proper Trig. Function
Piping Offsets-Known Angles
Piping Offsets-Unknown Angles
Division Of Decimals To Solve For Angles
The Six Trigonometric Functions.
Reading Decimals.
Flange-Method Or Laying Out Flange Bolt Holes
Offsets>Equal Spread Piping
Lateral-Layout Directly On Equal Size Pipe (No Pattern)
True (Y) Layout Directly On Equal ~ Pipe (No Pattern)
Angles-Solving For Bracket Angles
Rolling Offsets
Formula 32 Line Layout-Miter Cut Any Angle
Formula 16 Line Layout-Miter Cut Any Angle
Useful Information
Drill Sizes-For Pipe and Bolt
Tap Sizes-For Pipe and Bolt
Circumference, and Division Of Pipe Table
Weight Of Pipe Per Foot>Pounds
Decimal Equivalents Of Fraction Of An Inch
Minutes Converted To Decimal Of Degrees
Melting Point Of Various Metal-Degree Fahrenheit
Boiling Point Of Water Gage Pressure
Expansion Of Pipe-Steel
Symbols For Pipe Fittings
Instructions For Trig. Table
Trigonometric Table In Degree Steps Of 5' (Minutes)
Schedules (Steel Pipe) For Pipe Wall Thickness
Schedules (Stainless Steel Pipe) For Pipe Wall Thickness
Caps-Steel Weld Caps. Also Expansion Of Steel Pipe
Elbows-Long Radius, Short Radius, and 45 Degree
Tees-Full Size Weld Tees (Steel)
Tees-Reducing Branch Outlet Weld Tees. (Steel)
Reducers-Concentric and Eccentric (Welded) Take Off Dimensions.
Flanges>Weld Neck and Slip On (Steel)
Flanges-Bolt and Stud Dimension
Tees-Ordinate Length Figures For 90° Branches 16 Line Layout
Tees-Ordinate Length Figures For 90° Branches ~52 Line Layout
Laterals-Branches Ordinate Length 45° In Inches
Lateral-Branch Ordinate Lengths 30° In Inches.
Pipe Bending
Layout and Solution Or Pipe Bending Problems
Elbows-Solving For Odd-Angle Elbows
Lateral-Branch Pattern For Tapered End Header
Wye-Patterns For True (Y) Branch. and Header.
Pipe Hangers and Riser Clamps

  • Manufacturer
    H G Thorsness Trust
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