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

Supporting WPQR(s)

References documents

PQR-01

ISO 15609-1:2019 (E)

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

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.

WELDING PROCESS
Welding process

Type

TIG / 141

Manual

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

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

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

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

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

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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