| WELDING PROCEDURE SPECIFICATION | ||||||||||||
| WPS number
Date |
WIC-WPS-05 Rev. 00 (E)
26-May-2021 |
Qualified to
Company Name |
BS EN ISO 15614-1:2017 (E), Level 2
WIC Engineering Co., Ltd |
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| Supporting WPQR(s)
References documents |
PQR-01
ISO 15609-1:2019 (E) |
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| MATERIAL / JOINTS QUALIFIED | ||||||||||||
| Joint type
Parent metal(s) Notes |
Butt plate ss mb bs gg; Butt-pipe ss mb bs gg; Fillet-plate; Fillet-pipe
Any group 8.1~8.1 Detailed joint sketch sees in the next page |
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| TEST PIECE MATERIAL SPECIFICATION | MATERIAL SIZE QUALIFIED | Min. | Max. | |||||||||
| Type
Welded to Backing Surface preparation |
Plate ASTM A240 TP304 Gr-no. 8.1
Plate ASTM A240 TP304 Gr-no. 8.1 With or without Mechanical, back gouging or grinding |
Material thickness fillet (mm)
Material thickness butt (mm) Outside diameter (mm) Throat thickness (mm) |
3
3 150 No Min. |
8
8 No Min. No Max. |
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| WELDING PROCESS | ||||||||||||
| Welding process
Type |
TIG / 141
Manual |
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| FILLER METALS | ||||||||||||
| Manufacturer / trade name
Classification Size Deposited thickness |
KUANGTAI KTS-308L or equivalent
BS EN ISO 14343 W 19 9 L or AWS A5.9 ER308L, equivalent 1.6~2.4 mm 3.0~8.0 mm |
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| POSITION | ||||||||||||
| Position | PA, PB, PC, PD, PE, PF, H-L045; Pipe OD >150 mm in PC, in PF, PA rotated | |||||||||||
| PREHEAT | ||||||||||||
| Min. preheat temperature
Preheat maintenance temperature Max. inter-pass temperature |
10º C
- 150º C |
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| PWHT | ||||||||||||
| Temperature range | None | |||||||||||
| GAS | ||||||||||||
| Shielding gas / type
Flow rate Composition Backing Flow rate Composition |
ISO 14175-I1
10~16 l/minute 100% Argon ISO 14175-I1 14~22 l/minute 100% Argon |
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| ELECTRICAL | (root) | (hot) | (fill) | (cap) | ||||||||
| Filler size (mm)
Amperages Voltages Travel speed (mm/minute) Heat input (kJ/mm) Current & polarity Tungsten electrode DC pulsing current |
2.4
80~110 9~12 40~60 0.43~1.19 DCEN WT20, 2.4 mm None |
2.4
80~110 9~12 40~60 0.43~1.19 DCEN WT20, 2.4 mm None |
2.4
80~110 9~12 40~60 0.43~1.19 DCEN WT20, 2.4 mm None |
2.4
80~110 9~12 40~60 0.43~1.19 DCEN WT20, 2.4 mm None |
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| TECHNIQUE | ||||||||||||
| String or weave
Orifice/gas cup size (mm) Multi or Single pass per side Method of preparation and clean. |
Weave
6~12 mm Multi-pass Degreased, grinding, chipping, or brushing |
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Legends: fb = flux backing, gg = gouging or griding, bs = welding from both sides, ss = single side welding, gb = gas backing, mb = metal/non-metal backing, nb = welding with no material backing, sl = single layer, ml = multi-layers,
| JOINT SKETCH | |
α=55º~70º f=0~3.0 mm R=0~5.0 mm t=thickness of base metal |
α=55º~70º R=0~3.0 mm f=0~3.0 mm t=thickness of base metal |
 
R=0~3.0 mm t=thickness of base metal |
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