Welding Procedure Specification Pipe- 6G

Doc No. : Revision :

WELDING PROCEDURE SPECIFICATION(WPS) SPECIFICATION(WPS) PIPE 6G WELDING PROCESS: SMAW Client : Client  :

Page 1 of 3

TYPES: Manual DATE: 09.08.13

WPS NO. Supporting PQR No.

ASME Section1X, ANSI B 31.3, AP1 1104

 Applicable Code/Spec:

(See Attached Sketch) Groove Angle: Groove  Angle: Standard Single “V”Bevel (YES)_ (NO) X Root Face: 2.0±1.0mm

JOINT DETAILS(QW‐402) Type: Backing: Root opening: Root  opening: BASE METAL (QW‐403) Material Quality Test Piece Test  Piece Dimension Diameter Range

60º‐70º 2.0 ± 0.79mm

API 5L X 52 to API 5L X 52 4” Sch 80 ∅2 14”to ∅12 34”

5.0mm to 14.22mm

Wall Thickness Range Fillet 

Unlimited

FILLER METAL DETAILS (QW‐ 404) Parameters Root P Root  Pass

SFA specification AWS Classification F‐ No A ‐ No Size

A 5.1 E 6010 3 1 2.5mm

Hot P  ass

Filling and Capping

A 5.1 E 7010 3 1 3.2mm

A 5.1 E 700 3 1 3.2mm

WELDING POSITION (QW‐405) Welding Position: Groove: 6G Welding Progression: Root Root Run ‐ Vertic Vertical al Up‐hil Up‐hilll Fillet:

ALL

 

Second Pass – Vertical Up‐hill Other Other Passes Passes – Vertical Vertical Up‐hill Up‐hill

Number of Welders of  Welders

Root Run – 1 Second Pass – 1 Other Passes Passes ‐ 1

PREHEAT (QW‐406)

Preheat temperature:

35º C

Interpass temperature: Maximum 250ºC

POST WELD HEAT TREATMENT (QW‐407)

PWHT: Tem Tempera peratu ture re:: Heating and cooling rate: N/A

NO N/A N/A

GAS (QW‐408)

Shielding Trailing Backing

WPS IN ACCORDANCE WITH ASME IX/ANSI B31.3.

Method: Hold Holdin ingg Tim Time: Loading and unloading temp.: GASES N/A N/A N/A

MIXTURE N/A N/A N/A

N/A N/A N/A FLOW RATE N/A N/A N/A

WPS PIPE 6G

Doc No. : Revision :

WELDING PROCEDURE SPECIFICATION(WPS) SPECIFICATION(WPS) PIPE 6G WELDING PROCESS: SMAW

Page 2 of 3

TYPES: Manual

ELECTRICAL CHARACTERISTICS (QW‐ 409) Process Weld Pass  Amps (Range) SMAW Root pass 50 – 60 SMAW Hot Pass 100 – 150 SMAW Filling and Capping 100 ‐ 150

Volts (Ran (Range ge))

Curr Curren ent  t 

20 – 30 20 – 36 20 ‐ 37

Direct Direct Direct

Polarity

El E lectrode Positive Electrode Positive Electrode Positive

TECHNIQUE (Q W – 410)

Removal of line –Up Clamp: Bead Characteristics: Bead width Restriction: Orifice or Gas Cup size: Speed of Travel: Method of Inter pass cleaning:

After at least 65% of the Root Pass. Root by String bead others by Weave bead Max 3 times the electrode diameter N/A. 2.0 – 4.0”/min Grinding/ Mechanical Power Brush.

Time Lapse Between Completion of Root Pass and start of Hot Pass: Time Lapse Between Completion of Hot Pass and start of Other Passes: Minimum Number of passes Before Joint is Allowed to Cool:

5 Minutes Max 5 Minutes Max 3 Passes

Maximum Time Between Commencement and Completion of Weld: 45 minutes Type of Heater To be Used Propane Gas Torch With Rosebud Nozzle Peening NO To maintain the low hydrogen content, electrode shall be baked in accordance with manufacturer’s recommendation recommendation and transferred to heat quivers with minimum temperature of 70C We certify that the statements in this WPS are correct and were prepared, in accordance with the requirements of section IX of the ASME Code. o

30



50

T

2.0mm

WPS IN ACCORDANCE WITH ASME IX/ANSI B31.3.

2.0  0.79.mm

WPS PIPE 6G

Doc No. :

WELDING PROCEDURE SPECIFICATION(WPS) SPECIFICATION(WPS) PIPE 6G WELDING PROCESS: SMAW

Revision : Page 3 of 3

TYPES: Manual

STANDARD VEE BEVEL BUTT JOINT 4 3 3

T

2 1

SEQENCE OF BEAD

WPS IN ACCORDANCE WITH ASME IX/ANSI B31.3.

WPS PIPE 6G