Preliminary Welding Procedure Specification (PWPS)
Preliminary Welding Procedure Specification (PWPS)
Preliminary Welding Procedure Specification (PWPS)
Welding Details
Filler Metal Current Voltage Type of Travel Speed Heat Input
Run Process Remarks
Class Size(Dia) Amps.(A) (V) Polarity mm/Min KJ/mm
ROOT
& SMAW E7016-1 2.5 MM 55-85 20-24 DCEP 90-120
HOT
TO BE CALCULATED
DURING PQR
FILLING
& SMAW E7018-1 3.2 MM 80-140 20-26 DCEP 100-140
CAPPING
Range of Qualification
Welding process SMAW [111]
Joint type Single sided or double sided butt welds with backing or back gauging and Fillet
Welds
Group No.1 to Group No.1 and equal or lower specified yield strength of the same
Parent meterial group: group
Backing Material: N/A
Parent Material Thickness: Butt Weld: 3 mm to 24 mm Fillet Weld: 3 mm to 24 mm
Weld Metal Thickness: 3 mm to 24 mm
Throat Thickness: N/A
Outside diameter(mm): OD > 500 mm, For OD> 150 mm PC , PF rotated position or PA rotated Position
Filler metal type/Designation: Specification No (SFA) 5.1
AWS No ( Class ) E7016-1 & E7018-1
Size 2.5 mm & 3.2 mm
F. No(A.No.) 4(1)
Brand Name ESAB
Shielding Gas/Flux: N/A
Type of welding current: DCEP
Tungsten Electrode Size & Type N/A
Welding positons: All Positions except vertical down progression
Heat Input To be calculated during PQR
Preheat: Preheat Temp Min. 200 C
Method: N/A
Interpass Temp Max. 250 0C
Post Weld Heat Treatment: N/A
Other Information: TECHNIQUE
String or Weave Bead Both String and Weave
Weaving (Maximum width of run)9.6 mm
65 ± 5°