Welding procedure specification for GTAW

Update ASME IX 2019
Deteled: QW-405.2

PQR Qualification for P-No.1 & Gr-No. 1

Material: API 5L X52N PSL2 SMLS
Pipe size: NPS 2” Sch 80 (5.54 mm)
Joint design: Groove, included angle 60 deg, 6G position.
Welding process: GTAW deposit 5.54 mm, manual.
Note: No need to run PQR on the thicker member due to GTAW most use for root bead and low productivity.

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Descriptions

Descriptions of WPS, here.

QW-402 Joint details GTAW
QW-402.1 Groove design Groove and fillet weld
QW-402.5 Backing None
QW-402.10 Root Spacing 3.2 – 6.0 mm
QW-402.11 Retainers None
QW-403 Base metal
QW-403.5 Group Number 1
QW-403.6 T limits 2.77 to 11.08 mm
QW-403.8 T Qualified 1.5 to 11.08 mm
QW-403.11 P Qualified 1
QW-404 Filler metal
QW-404.3 Size 2.4 mm
QW-404.4 F Number 6
QW-404.5 A Number 1
QW-404.12 Spec. or Class. A/SFA. A 5.18 ER70S-6
QW-404.14 Filler Yes
QW-404.22 Consumable Insert None
QW-404.23 Filler metal product form Solid
QW-404.30 Max. Deposit thickness (t) 11.08 mm
QW-404.33 Classification -
QW-404.50 Flux None
QW-405 Positions
QW-405.1 + Position All
QW-405.3 change vertical welding Upward
QW-406 Preheat
QW-406.1 Decrease > 55 deg. C Min. 10 deg. C
QW-406.2 Preheat maintenance None
QW-406.3 Increase > 55 deg. C Mã. 250 deg. C
QW-407 PWHT
QW-407.1 change PWHT None
QW-407.2 change PWHT (T & T range) None
QW-408 Gas
QW-408.1 Trailing or composition SG-A
QW-408.2 Single, mixture % 100%
QW-408.3 Flow rate 10-15 lpm
QW-408.5 Backing flow None
QW-408.9 Backing or composition None
QW-408.10 Shielding or trailing None
QW-409 Electrical characteristics
QW-409.1 Heat input Max. 2.5 KJ
QW-409.3 Pulsing current None
QW-409.4 Current and Polarity DC EN
QW-409.8 I & E range A: 80 – 150, V: 10-14
QW-409.12: Tungsten electrode 2.4mm, 2%thoriated
QW-410 Technique
QW-410.1 String/weave Both
QW-410.3 Orifice, nozzle or gas cup size 4 – 7
QW-410.5 Method cleaning grinding, wire brushing
QW-410.6 Method back gouge None
QW-410.7 Oscillation None
QW-410.9 Multi to single pass/ side Multiple
QW-410.10 Single to multi electrodes Single
QW-410.11 Closed to out chamber None
QW-410.15 Electrode spacing None
QW-410.25 Manual or automatic Manual
QW-410.26 Peening None
QW-410.64 Use of thermal processes None

PQR Qualification for P-No. 8 and Gr-No. 1

Material: ASME SA312 TP316/316L ASME B36.19M SMLS
Pipe size: NPS 2” Sch 80S (5.54 mm)
Joint design: Groove, included angle 60 deg, 6G position.
Welding process: GTAW deposit 5.54 mm, manual.

Descriptions

Descriptions of WPS, here.

QW-402 Joint details GTAW
QW-402.1 Groove design Groove and fillet weld
QW-402.5 Backing None
QW-402.10 Root Spacing 3.2 – 6.0 mm
QW-402.11 Retainers None
QW-403 Base metal
QW-403.5 Group Number 1
QW-403.6 T limits 2.77 to 11.08 mm
QW-403.8 T Qualified 1.5 to 11.08 mm
QW-403.11 P Qualified 8
QW-404 Filler metal
QW-404.3 Size 2.4 mm
QW-404.4 F Number 6
QW-404.5 A Number 8
QW-404.12 Spec. or Class. A/SFA. A 5.9 ER316L
QW-404.14 Filler Yes
QW-404.22 Consumable Insert None
QW-404.23 Filler metal product form Solid
QW-404.30 Max. Deposit thickness (t) 11.08 mm
QW-404.33 Classification -
QW-404.50 Flux None
QW-405 Positions
QW-405.1 + Position All
QW-405.3 change vertical welding Upward
QW-406 Preheat
QW-406.1 Decrease > 55 deg. C Min. 10 deg. C
QW-406.2 Preheat maintenance None
QW-406.3 Increase > 55 deg. C Max. 150 deg. C
QW-407 PWHT
QW-407.1 change PWHT None
QW-407.2 change PWHT (T & T range) None
QW-408 Gas
QW-408.1 Trailing or composition SG-A
QW-408.2 Single, mixture % 100% Argon
QW-408.3 Flow rate 10-15 lpm
QW-408.5 Backing flow SG-A, 10 – 15 lpm
QW-408.9 Backing or composition None
QW-408.10 Shielding or trailing None
QW-409 Electrical characteristics
QW-409.1 Heat input Max. 2.5 KJ
QW-409.3 Pulsing current None
QW-409.4 Current and Polarity DC EN
QW-409.8 I & E range A: 50 – 120, V: 10-14, TS: 60 – 100 mm/min.
QW-409.12: Tungsten electrode 2.4mm, 2%thoriated
QW-410 Technique
QW-410.1 String/weave Both
QW-410.3 Orifice, nozzle or gas cup size 4 – 7
QW-410.5 Method cleaning grinding, wire brushing
QW-410.6 Method back gouge None
QW-410.7 Oscillation None
QW-410.9 Multi to single pass/ side Multiple
QW-410.10 Single to multi electrodes Single
QW-410.11 Closed to out chamber None
QW-410.15 Electrode spacing None
QW-410.25 Manual or automatic Manual
QW-410.26 Peening None
QW-410.64 Use of thermal processes None

PQR Qualification for Super Duplex Stainless steel

Material: ASME SA790 S32750 ASME B36.19M SMLS
Pipe size: NPS 2” Sch 80S (5.54 mm)
Joint design: Groove, included angle 60 deg, 6G position.
Welding process: GTAW deposit 5.54 mm, manual.

Descriptions

Descriptions of WPS, here.

QW-402 Joint details GTAW
QW-402.1 Groove design Groove and fillet weld
QW-402.5 Backing None
QW-402.10 Root Spacing 3.0 – 4.0 mm
QW-402.11 Retainers None
QW-403 Base metal
QW-403.5 Group Number 1
QW-403.6 T limits 2.77 to 11.08 mm
QW-403.8 T Qualified 1.5 to 11.08 mm
QW-403.11 P Qualified 10H
QW-404 Filler metal
QW-404.3 Size 2.4 mm
QW-404.4 F Number 6
QW-404.5 A Number 8
QW-404.12 Spec. or Class. A/SFA. A 5.9 ER2594
QW-404.14 Filler Yes
QW-404.22 Consumable Insert None
QW-404.23 Filler metal product form Solid
QW-404.30 Max. Deposit thickness (t) 11.08 mm
QW-404.33 Classification -
QW-404.50 Flux None
QW-405 Positions
QW-405.1 + Position All
QW-405.3 change vertical welding Upward
QW-406 Preheat
QW-406.1 Decrease > 55 deg. C Min. 10 deg. C
QW-406.2 Preheat maintenance None
QW-406.3 Increase > 55 deg. C Max. 150 deg. C
QW-407 PWHT
QW-407.1 change PWHT None
QW-407.2 change PWHT (T & T range) None
QW-408 Gas
QW-408.1 Trailing or composition SG-AN-2
QW-408.2 Single, mixture % 98% Ar + 2% N2
QW-408.3 Flow rate 10-18 lpm
QW-408.5 Backing flow SG-AN-2, 15 – 18 lpm
QW-408.9 Backing or composition None
QW-408.10 Shielding or trailing None
QW-409 Electrical characteristics
QW-409.1 Heat input Max. 2.5 KJ
QW-409.3 Pulsing current None
QW-409.4 Current and Polarity DC EN
QW-409.8 I & E range A: 60 – 80, V: 10-12, TS: 60 – 100 mm/min.
QW-409.12: Tungsten electrode 2.4mm, 2%thoriated
QW-410 Technique
QW-410.1 String/weave Both
QW-410.3 Orifice, nozzle or gas cup size 4 – 7
QW-410.5 Method cleaning grinding, wire brushing
QW-410.6 Method back gouge None
QW-410.7 Oscillation None
QW-410.9 Multi to single pass/ side Multiple
QW-410.10 Single to multi electrodes Single
QW-410.11 Closed to out chamber None
QW-410.15 Electrode spacing None
QW-410.25 Manual or automatic Manual
QW-410.26 Peening None
QW-410.64 Use of thermal processes None

PQR Qualification for Duplex Stainless Steel

Material: ASME SA790 S31803 ASME B36.19M SMLS
Pipe size: NPS 2” Sch 80S (5.54 mm)
Joint design: Groove, included angle 60 deg, 6G position.
Welding process: GTAW deposit 5.54 mm, manual.

Descriptions

Descriptions of WPS, here.

QW-402 Joint details GTAW
QW-402.1 Groove design Groove and fillet weld
QW-402.5 Backing None
QW-402.10 Root Spacing 3.0 – 4.0 mm
QW-402.11 Retainers None
QW-403 Base metal
QW-403.5 Group Number 1
QW-403.6 T limits 2.77 to 11.08 mm
QW-403.8 T Qualified 1.5 to 11.08 mm
QW-403.11 P Qualified 10H
QW-404 Filler metal
QW-404.3 Size 2.4 mm
QW-404.4 F Number 6
QW-404.5 A Number 8
QW-404.12 Spec. or Class. A/SFA. A 5.9 ER2209
QW-404.14 Filler Yes
QW-404.22 Consumable Insert None
QW-404.23 Filler metal product form Solid
QW-404.30 Max. Deposit thickness (t) 11.08 mm
QW-404.33 Classification -
QW-404.50 Flux None
QW-405 Positions
QW-405.1 + Position All
QW-405.3 change vertical welding Upward
QW-406 Preheat
QW-406.1 Decrease > 55 deg. C Min. 10 deg. C
QW-406.2 Preheat maintenance None
QW-406.3 Increase > 55 deg. C Max. 150 deg. C
QW-407 PWHT
QW-407.1 change PWHT None
QW-407.2 change PWHT (T & T range) None
QW-408 Gas
QW-408.1 Trailing or composition SG-A
QW-408.2 Single, mixture % 100%
QW-408.3 Flow rate 10-18 lpm
QW-408.5 Backing flow SG-A, 15 – 18 lpm
QW-408.9 Backing or composition None
QW-408.10 Shielding or trailing None
QW-409 Electrical characteristics
QW-409.1 Heat input Max. 2.5 KJ
QW-409.3 Pulsing current None
QW-409.4 Current and Polarity DC EN
QW-409.8 I & E range A: 60 – 80, V: 10-12, TS: 60 – 100 mm/min.
QW-409.12: Tungsten electrode 2.4mm, 2%thoriated
QW-410 Technique
QW-410.1 String/weave Both
QW-410.3 Orifice, nozzle or gas cup size 4 – 7
QW-410.5 Method cleaning grinding, wire brushing
QW-410.6 Method back gouge None
QW-410.7 Oscillation None
QW-410.9 Multi to single pass/ side Multiple
QW-410.10 Single to multi electrodes Single
QW-410.11 Closed to out chamber None
QW-410.15 Electrode spacing None
QW-410.25 Manual or automatic Manual
QW-410.26 Peening None
QW-410.64 Use of thermal processes None

Updating another material!

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Please help a WPS for SS316 to suplex.

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Yab, we will update P-No. 8 to 10H.

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