Welding Positions

THE WELDIN WELDING G INSTIT INSTITUTE UTE

Welding Positions: (As extracted from BS 499: Part 1: 1991 Figure 38) Grap Gr aph hical ical Rep eprrese esentatio ation n for for Butt We Weld ldss

1G Flat Position Position (Rotated)

2G

Flat Flat Posi Positi tion on

Horizontal Vertical Position

UK (USA) SA)

ISO/ ISO/B BS EN

1G

PA

2G

PC

1G

2G

PF

PF Vertical Vertical up 3G PG

3G

PG Vertical down

Vertical Position

3G

4G 4G

PE

Overhead Position

(Pipe axis fixed horizontal) PF Vertical Vertical up

PF 5G PG 5G

PG Vertical down

Vertical Position

6G

H-LO45

45°

6G

Inclined Position (Fixed)

Welding Inspection of Steels WIS 5 Section 02 Terms & Definitions Rev 09-09-07 Copyright  2007 TWI Middle East

2.16

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THE WELDIN WELDING G INSTIT INSTITUTE UTE

Grap Gr aphi hica call Rep epre rese sent ntat atio ion n for for Fill Fillet et We Weld ldss

UK (USA (USA))

ISO/ ISO/BS BS EN

1F

L-45/PA

1FR 

L-45/PA

2F

PB

2FR

PB

45°

45° (Weld throat vertical) vertical)

1F Flat lat Posi osition tion

2F

Flat Flat Posit ositio ion n (Rotated ) 1FR 

Horizontal Vertical Position

2F

Pipe Rotated

2FR 

(Pipe axis horizontal) (Weld axis vertical) vertical)

2FR  PF Vertical Vertical up

PF 3F

PG Vertical down

4F

PD

PG 3F

Vertical Position

3F

(Weld axis horizontal)

4F

Overhead Position (Pipe axis horizontal) horizontal) PF

4F PF

PF Vertical Vertical up 5F

PG

PG

PG