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What is welding certification?

What is welding certification?

Know more about What is welding certification?, Welding certification depends upon the welding position the kind of shape or structure. A coding is used to represents the positions and type of joint. Here is a table depicting the codes.

Welding position Type of Weld Structural Coding
1 refers to Flat position  

G refers to Groove weld

 

F refers to Fillet weld

1F,1G
2 refers to Horizontal position 2F,2G
3 refers to Vertical position 3F,3G
4 refers to Overhead position 4F,4G
   

If a welder done a certification in Groove weld , he/she qualifies to weld for fillet joint but the reverse is not true , fillet welder is not certified to weld in groove welds. 3G and 4G structural coding certification qualifies a welder for all position both in structural welding and pipe (diameter ≥ 24 inches).

Pipe welding certification is difficult to pass as compared to structural welding because of  complications. Table below shows the codes for pipe certification.

Welding Position Type of joint code
1 refers that pipe is in horizontal position and  other pipe is rolled along the surface by the welder to weld.  

 

 

G refers to Groove weld

 

F refers to Fillet weld

 

R refers to restricted

 

1F, 2F, 5F,1G,2G ,5G,6G, 6F can easily be understandable but how to code R.

Let us take an example one position, 6GR this indicate that a welder has to weld a pipe fixed at 45 deg angle  with  a groove weld is restricted.

2 defines that the pipe is in the vertical fix position and is welded in horizontal position
5 stand that pipe is in horizontal fixed position and welding is done overhead, vertical and in flat positions
6 means that pipe is fixed at 45 deg  an a welder welds in horizontal, vertical, overhead and flat position

A combination certification is also considered, 2G+5G= 6G but these are not very common these days. 6 G position is used to weld a pipe joint inclined at an angle of 45 degree. If one clear 6G test, he will automatically qualifies for all the welding position.

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What is welding certification?
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Know more about What is welding certification?, Welding certification depends upon the welding position the kind of shape or structure.
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Jobs4welding
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