Prequalified : Yes / No

Qualified by Testing : Yes / No

Company Name : Identification :

Welding Process (es) : Root SMAW / Cover SAW Revision : 6 Date : 4-Jun-10

Supporting PQR NO : Prepared : Pradip Patil Authorized : Vikas Dighe

JOINT DESIGN USED Refer Figure 3.3 Type : Manual / Semi-automatic

Type : Machine / Automatic

Single / Double

Backing : Yes / No

Backing Material : ELECTRICAL CHARACTORISTICS Refer table 4.5

Root Opening : 0 mm to 3 mm Transfer Mode : SAW

Root Face Dim. : 3.2 mm to 4 mm Globular / Short Circuiting

Groove Angle : 600C to 65

0C / Spray Yes

Back Gouging : Yes / No

Method : Current AC / DCEP Yes

DCEN / Pulsed

Other

BASE METAL Refer Table 4.9

Material Spec. : Tungastan Electrode (GTAW) : Not Applicable

Type of grade : Size / Type

Thickness : Groove 28 mm / Fillet all

Diameter (Pipe) : to N/A

Thickness Range Qualified : Refer table 4.2 TECHNIQUE

16 mm to unlimited note d : Stringer bead / Weave bead

: Multi Pass / Single Pass

:

No of

Electrodes

FILLER METALS Refer Annexure V Electrode Spacing : Longitudinal Lateral

AWS Specification : Root / Cover Angle : Leading Arc Trailing Arc

Type of grade : Root / Cover Contact tube to

work distance : Minimum Maximum

Peening :

SHIELDING Inter pass cleaning :

Flux :

Gas : Compos Flow Rate

Cup Size POST WELD HEAT TREATMENT Not Applicable

Welding Procedure Specification (WPS)

Not Applicable

European Norm EN 10025

S355J2G3

PQR- SMAW+SAW-GWPL/16

PQR- SMAW+SAW-GWPL/16

Butt Joint (double vee)

Global Wind Power Limited

Not Applicable

Grinding

Cup Size POST WELD HEAT TREATMENT Not Applicable

Electrode-Flux class : Loading temp : Minimum

Heating rate : Minimum / Maximum

Holding temp. : Minimum / Maximum

PREHEAT Holding time : Minimum / Maximum

Preheat Temp : Min. Cooling rate : Minimum / Maximum

Interpass Temp. : Max. Un-Loading temp Maximum

WELDING PROCEDURE (PARAMETERS) Refer table 4.5

Pass or weld

layers (s)

Process >10%

variation

Volts >7%

variatio

n

Travel Speed >15%

variatio

n

Interpass Temp.

Max

Heat Input

Class Dia (mm) Type &

Polarity

Amps mm/ min 0C table 4.6

Root Run : Inside Outside

1 SMAW SFA 5.1 3.15 mm

: Inside Outside

1 SAW SFA 5.17 3.15 mm DCEP 487 to 594 27 to 31 438 to 592 2.5 max

2 SAW SFA 5.17 3.15 mm DCEP 487 to 594 27 to 31 438 to 592 2.5 max

3 SAW SFA 5.17 3.15 mm DCEP 487 to 594 27 to 31 438 to 592 2.5 max

: Inside Outside

1 SAW SFA 5.17 3.15 mm DCEP 489 to 596 26 to 30 346 to 492 2.5 max

2 SAW SFA 5.17 3.15 mm DCEP 489 to 596 26 to 30 346 to 492 2.5 max

3 SAW SFA 5.17 3.15 mm DCEP 489 to 596 26 to 30 346 to 492 2.5 max

4 SAW SFA 5.17 3.15 mm DCEP 489 to 596 26 to 30 346 to 492 2.5 max

5 SAW SFA 5.17 3.15 mm DCEP 489 to 596 26 to 30 346 to 492 2.5 max

Notes 1 :

2 :

3 :

4 :

Filler Metal Current Joint Details (Sketch)

Cover passes (face side)

Cover passes (root side)