How do I stir the welding

Welding positions

The position of the weld seam during the welding process is generally referred to as the welding position. This results from the position of the workpiece to be welded and the accessibility of the torch or the electrode to the weld seam. Depending on the choice of electrode and other parameters such as the current strength, each position requires a different welding technique. In order to learn and consolidate these welding techniques, appropriate training and examinations are necessary.

The so-called Tub position (PA). In this case, the melt flows through gravity to the lowest point of the component. All other positions are listed as Predicaments as this is not an ideal position for the welder to the workpiece. Movable components are therefore ideally positioned in the tub position with a clamping device or a handling robot. The exception, however, are pipes, as the ideal position for these is slightly rising, i.e. in an 11 o'clock position (PH). In many cases, such as the orbital welding of a pipeline, however, this is not possible, so that welding must be carried out in difficult positions.

Welding positions according to EN ISO and ASME code

EN ISO

According to the DIN EN ISO 6947 standard, there are the following suitable welding positions:

  • PA = Horizontal welding of butt and fillet welds (tub position or tub position)

  • Pc = Transverse position or transverse seam (horizontal welding on a vertical wall)

  • PD = Horizontal overhead position

  • PE = Overhead welding or overhead position

In addition, there are more special welding positions:

  • PH = Vertical position or vertical seam, butt welds pipe to pipe and fillet welds pipe to plate (vertical welding from bottom to top)

  • PJ = Vertical position or vertical seam, butt welds pipe to pipe and fillet welds pipe to plate (vertical welding from top to bottom)

  • H-L045 = 45 ° inclined position (pipe fixed), rising welding

  • J-L045 = 45 ° inclined position (pipe fixed), downward welding

  • PK = Pipe position for orbital welding

ASME Code Section IX

In the ASME Code Section IX (QW-120), a comprehensive, closed set of rules for the design, manufacture and testing of pressure vessels, the test items are designated as follows:

Butt sutures

  • 1G = Tub position (+ pipe), flat position, comparable to the welding position according to EN, position PA
  • 2G = Transverse position (+ pipe), transverse position, comparable to the welding position according to EN, position Pc
  • 3Gu = Climbing position, vertical-up position, comparable to the welding position according to EN, position PF
  • 3Gd = Falling position, vertical-down position, comparable to the welding position according to EN, position PG
  • 4G = Overhead position, comparable to the welding position according to EN, position PE
  • 5Gu = Up position pipe, vertical-up position, comparable to the welding position according to EN, position PH
  • 5Gd = Pipe dropping position, vertical-down position, comparable to the welding position according to EN, position PJ
  • 6Gu = 45 ° inclined position (pipe fixed), climbing position, vertical-up, comparable to the welding position according to EN, position H-L045
  • 6Gd = 45 ° inclined position (fixed pipe), drop position, vertical-down, comparable to the welding position according to EN, position J-L045

Fillet welds

  • 1F = Bath position, flat position, comparable to the welding position according to EN, position PA
  • 1FR = Trough position on the inclined pipe (e.g. 45 °), flat position, comparable to the welding position according to EN, position PA
  • 2F = Horizontal on the pipe, comparable to the welding position according to EN, position PB
  • 2FR = Horizontal on the pipe, comparable to the welding position according to EN, position PB
  • 4F = Horizontal overhead, overhead, comparable to the welding position according to EN, position PD
  • 5Fd = Falling position on the pipe, vertical-down, comparable to the welding position according to EN, position PJ
  • 5Fu = Rising position on the pipe, vertical-up, comparable to the welding position according to EN, position PH

With this basis you can start your next welding project. The welding heroes wish you a lot of fun!


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