WELDING POSITIONS

EN ISO 6947 and ASME use the same welding positions, but with different labels. A conversion table is provided below. (Note, downloadable versions are below the table for printing.)

Plate Pipe
0 ° or 90 ° inclined
Pipe
45 ° inclined
EN ISO Butt Fillet EN ISO Butt Fillet Butt/Fillet
PA
"flat"

1G

1F
PA
1G rotated

1FR rotated
PB
"horizontal
vertical"

2F
PB
2F

2FR rotated
PC
"horizontal"

2G
PC
2G
PD
"horizontal
overhead"

4F
PD
4F
PE
"overhead"

4G
PE
4G rotated
PF
"vertical
up"

3G uphill

3F uphill
PH
5G uphill

5F uphill

6G uphill
HL-045
PG
"vertical
down"

3G downhill

3F downhill
PJ
5G downhill

5F downhill

6G downhill
JL-045
PK Orbital welding
Note: There is also a 6GR position, which is the 6G position with a restriction simulating ring around the pipe.

Grey version of chart (PDF)

White version of chart (to save on ink) (PDF)