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WELDING PROCEDURE SPECIFICATION - WPS NO: 013
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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WELDING PROCEDURE SPECIFICATION - WPS NO: 020
TM 5-5420-279-23
WPS No. 0018
WILLIAMS FAIREY ENGINEERING LTD.
APPROVAL REPORT:
WELDING PROCEDURE SPECIFICATION - WPS NO: 018
W.P.A.R. No: 03
Approved by:
Sheet No: 1
Issue: 1
Date: 26-06-97
K.L. No: 9702
Primary Specifications:
Material Specification:
Material Dimensions.
BS EN 729
DGFVE 232B
Thickness: 5.5 to 19mm
Pipe Dia: N/A
Type Of Joint:
Welding Process:
Welding Position:
Butt weld
Manual M.I.G.
PA
Joint Preparation:
Run Sequence & Weld Dimensions:
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
M.I.G.
1.6mm
250 - 280
23 - 26
DC + VE
7.5 - 9.0
1
M.I.G.
1.6mm
230 - 260
23.5 - 25
DC + VE
7.0 - 8.4
Additional
runs
Filler Metal Classification & Trade Name: BS 2901 PT 4 TYPE 5556A
Gas Type Shielding: Argon
Gas flow Shielding:
Tungsten Electrode Type:
Backing: N/A
45 - 55 cu/ft/hr
N/A
Backing: N/A
Size: mm
Details of Back Cutting / Backing: Removable backing bar to be used, or a jig with a backing
bar built in
Preheat Temperature:
Interpass temperature:
Transfer Mode: Spray
Min +5C
Max 50C
Other Information: Use run on run off plates where possible or use crater filling settings on
PAC 8.
Dress or remove all unsound tack welds.
Appendix K Page 70

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