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Welding Drawing

Topics:

1. Parts Preparation

2. Welding Standard

3. Welding Face Preparations

4. Welding Drawing

5. Basic Welding Symbol

6.

Welding Symbols Location

7. Mix Symbols

8. Welding Surface Symbols

Arc-Welding

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TIG-Welding

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MIG-Welding (Metal-Inert-Gas Welding)

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1. Part Preparations

There are 4 standard of welding parts preparation:

a. Single-V b.Single-Bevel c. Single-U d. Single-J

Standard sizes of welding face for

parts that have a cross section area

more than 4 inches:

2. Welding Standard

ASTM A285: Welding wire #B 6010 for low carbon steel

Before After

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ASTM A516 or A537: Welding wire #E 8018-G for low carbon steel

Before After

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3. Welding Face Preparations

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4. Welding Drawing

Drawing of actual welding part is difficult and dont need. Symbol could be used to

represent the welding part. The pictures show the example of fillet weld:

Fillet weld using symbol

5. Basic Welding Symbol

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Use of symbol:

Part Views Symbol

6. Welding Symbols Location

There are 4 standards related to the location of welding symbols:

1.

ISO (International Organization for Standardization)

2. DIN (Deutcheindustrie Norman)

3. AWS (American Welding Society)

4. JIS (Japanese Industrial Standard)

ISO and DIN are the same. AWS and JIS are the same.

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7. Mix Symbols

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8. Welding Surface Symbols

There are 3 types of welding surface symbols:

Type Symbol

Flat

Convex

Concave

Example:

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9. Extra Symbols

Weld all around

Weld at installation site

10.Wilding dimension (using symbols)

Example:

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