AWS A2.4:2007. Table of Contents

Transcription

1 Table of Contents Dedication...v Personnel...vii Foreword...ix List of Tables...xiv List of Figures...xiv 1. Scope Normative References Basic Welding Symbols Distinction between Weld Symbol and Welding Symbol Basis of Reference Weld Symbols Supplementary Welding Symbols Welding Symbols Placement of the Welding Symbol Illustrations Joint Types General Provisions for Welding Symbols Location Significance of the Arrow Location of the Weld with Respect to the Joint Orientation of Specific Weld Symbols Break in the Arrow Combination Weld Symbols Multiple Arrow Lines Multiple Reference Lines Field Weld Symbol Extent of Welding Denoted by Symbols Weld-All-Around Symbol Tail of the Welding Symbol Contour Symbols Melt-Through Symbol Melt-Through with Edge Welds Method of Drawing Symbols U.S. Customary and SI Units Weld Dimension Tolerance Changes in Joint Geometry during Welding Groove Welds General Depth of Bevel and Groove Weld Size Groove Dimensions Length of Groove Welds Intermittent Groove Welds Contours and Finishing of Groove Welds...43 xi

2 6.7 Back and Backing Welds Joints with Backing Joints with Spacers Consumable Inserts Groove Welds with Backgouging Seal Welds Skewed Joints Fillet Welds General Size of Fillet Welds Length of Fillet Welds Intermittent Fillet Welds Fillet Welds in Holes and Slots Contours and Finishing of Fillet Welds Skewed Joints Plug Welds General Plug Weld Size Angle of Countersink Depth of Filling Spacing of Plug Welds Number of Plug Welds Contours and Finishing of Plug Welds Joints Involving Three or More Members Slot Welds General Width of Slot Welds Length of Slot Welds Angle of Countersink Depth of Filling Spacing of Slot Welds Number of Slot Welds Location and Orientation of Slot Welds Contours and Finishing of Slot Welds Spot Welds General Size or Strength of Spot Welds Spacing of Spot Welds Number of Spot Welds Extent of Spot Welding Contours and Finishing of Spot Welds Multiple-Member Spot Welds Seam Welds General Size and Strength of Seam Welds Length of Seam Welds Dimensions of Intermittent Seam Welds Number of Seam Welds Orientation of Seam Welds Contours and Finishing of Seam Welds...75 xii

3 11.8 Multiple-Member Seam Welds Edge Welds General Edge Weld Size Single- and Double-Edge Welds Edge Welds Requiring Complete Joint Penetration Edge Welds on Joints with More Than Two Members Length of Edge Welds Intermittent Edge Welds Stud Welds Side Significance Stud Size Spacing of Stud Welds Number of Stud Welds Dimension Location Location of First and Last Stud Welds Surfacing Welds Use of the Surfacing Weld Symbol Size (Thickness) of Surfacing Welds Extent, Location, and Orientation of Surfacing Welds Surfacing a Previous Weld Surfacing to Adjust Dimensions Brazing Symbols General Braze Fillet Special Preparation Not Specified Application of Symbols Nondestructive Examination Symbols Elements Examination Method Letter Designations Supplementary Symbols Standard Location of the Elements General Provisions for Nondestructive Examination Symbols Welding and Nondestructive Examination Symbols U.S. Customary and SI Units Supplementary Nondestructive Examination Symbols Specifications, Codes, and References Extent, Location, and Orientation of Nondestructive Examination Symbols Number of Examinations Examination of Areas...93 Annex Α (Normative) Tables...95 Annex B (Informative) Design of Standard Symbols (U.S. Customary Units) Annex C (Informative) Design of Standard Symbols (SI Units) Annex D (Informative) Commentary on AWS A2.4, Standard Symbols for Welding, Brazing, Annex D (Informative) and Nondestructive Examination Annex E (Informative) Welding Symbol Chart Annex F (Informative) Guidelines for the Preparation of Technical Inquiries Annex G (Informative) Informative References List of AWS Documents on Definitions and Symbols xiii

4 List of Tables Table A.1 Joint Type Designators...95 A.2 Letter Designations of Welding, Brazing, and Allied Processes and Their Variations...96 A.3 Alphabetical Cross Reference to Table A.2 by Process...97 A.4 Alphabetical Cross Reference to Table A.2 by Letter Designation...98 A.5 Suffixes for Optional Use in Applying Welding, Brazing, and Allied Processes...99 A.6 Examination Method Letter Designations Figure List of Figures 1 Weld Symbols Supplementary Symbols Standard Location of the Elements of a Welding Symbol Joint Types Application of Weld Symbols to Indicate the Arrow Side, the Other Side, and Both Sides Applications of the Break in the Arrow of the Welding Symbol Combination Weld Symbols Specification of the Location and the Extent of Fillet Welds Application of the Symbol for the Specification of the Extent of Welding Application of the TYPICAL Welding Symbol Application of the Melt-Through Symbol Specification of Groove Weld Size, Depth of Bevel Not Specified Application of Dimensions to the Groove Weld Symbol Groove Weld Size, (E), Related to Depth of Bevel, S Specification of the Groove Weld the Depth of Bevel Application of Symbols for the Specification of Groove Weld Size Only Application of Symbols for Combined Groove and Fillet Welds Specification of the Root Opening of Groove Welds Specification of the Groove Angle of Groove Welds Application of Symbols for Complete Joint Penetration with Joint Geometry Optional Partial Joint Penetration with the Joint Geometry Optional Application of Flare-Bevel and Flare-V-Groove Weld Symbols Specification of the Length of Welding for Groove Welds Specification of the Extent of Welding for Groove Welds Application of Intermittent Welds Application of the Flush and Convex Contour Symbols Application of Back or Backing Weld Symbol Joints with Backing or Spacers Application of Consumable Insert Symbol Application of the Symbol for Groove Welds with Backgouging Skewed Joint...51 xiv

5 Figure 32 Application of the Symbols for the Size and Length of Fillet Welds Application of the Intermittent Fillet Weld Symbol Application of the Fillet Weld Symbol Application of the Plug Weld Symbol Application of Information to Plug Weld Symbols Application of the Slot Weld Symbol Application of Information to Slot Weld Symbols Application of the Spot Weld Symbol Application of Information to the Spot Weld Symbol Application of the Projection Weld Symbol Multiple-Member Spot Weld Application of the Seam Weld Symbol Application of Information to the Seam Weld Symbol Multiple-Member Seam Weld Application of the Edge Weld Symbol Application of the Stud Weld Symbol Application of the Surfacing Weld Symbol Application of Brazing Symbols Supplementary Nondestructive Examination Symbols Standard Location of the Elements in the Nondestructive Examination Symbol...91 D.1 Examples of the Welding of Tubing D.2 Examples of Complete Joint Penetration Sequence D.3 Example of a Flare Groove xv