Welding Symbols

CHAPTER 3

Welding Symbols

Kirloskar Pneumatic Co. Ltd

22-Jun-12 Kirloskar Pneumatic Co. Ltd 1

Welding symbols

Following are the types of welds

- Butt joint - Fillet weld

- Slot weld - Plug weld

- Seam weld - Spot weld

4Welding symbols

Following are the types of joints

- Butt joint - Lap joint

- Tee joint - Corner joint - Edge joint

Welding symbols

Following elementary & supplementary weld symbols

Welding symbols

Basic dimension in welded joints

Welding symbols

Welding symbols

Specifying Other side

Welding symbols

Specifying edge penetration details for Butt joint

Welding symbols

Specifying welded joints

Welding symbols

Specifying weld joints

Welding Symbols

Need to specify Welding Symbol-

Placement of the WELD Symbols

oFollowing are the types of welds

- Butt joint - Fillet weld

- Slot weld - Plug weld

- Seam weld - Spot weld

Welding Symbols

Welding Symbols

Symbol as per ISO standard

Symbol as per AWS/ASME/ANSI standard

Tail in the symbol is omitted if no specific information is to be

specified

Complete welding Symbol

Welding SymbolsPossible Directions for application of the Arrow

Specifying Arrow side and other side

Welding Symbols

Symbolic Representation

Welding Symbols

oIf the symbols is drawn below reference line, it has to be mirror image of the symbols above

oIn ISO system keep dashed line below solid line as far as possible.

oFor symmetrical welds dashed line is omitted in ISO system.

oTo simplify the drawing as far as possible, draw edge preparation separately.

Welding Symbols

Specifying Welding Symbol

Welding Symbols

Welding Symbol for various types

Plate thickness- 8-20mm

Angle: 60-70

Plate thickness-Plate thickness-

3-6mm

Root opening: 1.5-3.0mm

Smaller Plate thickness-6-20mm

Angle: 45-55

Plate thickness-20 mm and above

Root opening : 3mm

Welding Symbols


Smaller Plate thickness-

20 mm and above

Root opening : 3mm

Welding Symbols

Specifying size of Root Face Specifying size of Fillet weld

Welding Symbols


Welding Symbols

Specifying Spot and Seam Welds

Welding SymbolsLocation of Butt/ Groove welding symbols

Welding Symbols

Specifying Fillet Weld

Welding Symbols

Supplementary Welding Symbol-

Welding Symbols

Supplementary Welding Symbol-

Specifying weld counters

Welding Symbols

Specifying Convex contour

Welding Symbols

Specify other Supplementary symbols-

Welding Symbols

Specify other Supplementary symbol

Peripheral Welds

Welding Symbols

Specify other Supplementary symbols-

Welding Symbols

Specifying Dimensions in

Butt joint

Welding Symbols

Specifying Dimensions

in Butt joint

Specifying

Fillet Weld

Welding Symbols

Actual and Design throat thickness

Welding Symbols

Specifying Fillet joint

Welding Symbols

Welding Symbols

Specifying staggered Fillet joint

Welding Symbols

Specifying Resistance Spot Welding

Welding Symbols

Welding symbols

oSpecifying welded joints

Welding Symbols

Welding Symbols

Specifying Non Destructive testing symbols

Welding Symbols

Welding Symbols

Exercise

Show welding symbols for following Flange Joint

Welding SymbolsExercise

Show welding symbols for following Flange Joint

Welding Symbols

Solution

Documents

Welding Symbols