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WELDING PROCEDURE SPECIFICATION - WPS NO: 070
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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WELDING PROCEDURE SPECIFICATION - WPS NO: 102
TM 5-5420-279-23
WPS No. 0073
WILLIAMS FAIREY ENGINEERING LTD.
APPROVAL REPORT:
WELDING PROCEDURE SPECIFICATION - WPS NO: 073
W.P.A.R. No: 01
Approved by:
Sheet No: 1
Issue: 1
Date: 06-01-99
K.L. No: 9526
Primary Specifications:
Material Specification:
Material Dimensions.
BS EN 729
DGFVE 232B
Thickness: 3 to 6mm
Pipe Dia: N/A
Type Of Joint:
Welding Process:
Welding Position:
Butt weld
T.I.G.
PA
Run Sequence & Weld Dimensions:
Joint Preparation:
Preparation Method: Weld areas to be degreased and wire brushed before assembly
Welding Details:
Wire feed
Travel
Heat
Size of
Type of
Run No.
Process
Current A
Voltage
Speed
Speed
Input
filler metal
Current
M/Min
mm/Min
J/mm
1
T.I.G.
2.4mm
110 - 150
14 - 16
A/C
N/A
Additional
T.I.G.
2.4mm
110 - 170
14 - 17
A/C
N/A
runs
Filler Metal Classification & BS 2901 PT 4 TYPE 5556A
Gas Type Shielding: Argon
Gas flow Shielding:
Tungsten Electrode Type:
Backing: Argon
15 cu/ft/hr
Zirconiated
Backing: 15 cu/ft/hr
Size: 2.4 to 3.2mm
Details of Back Cutting / Backing: Use argon back purge on full penetration butt welds
Preheat Temperature:
Interpass temperature:
Transfer Mode: N/A
Min +5C
Max 150C
Other Information:
Appendix K Page 78

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