PT.

STAINLESS STEEL PRIMAVALVE MAJUBERSAMA

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PRELIMINARY WELDING PROCEDURE SPECIFICATION ( PWPS )

ASME Section IX - 2021
Company Name : PT STAINLESS STEEL PRIMAVALVE MAJUBERSAMA
Welding Procedure Specification No. : Project Name : Date : July 07, 2023
Supporting PQR No.(S) : Revision No. : 0
Welding Process(es) : GTAW Type(s) : Manual
(Automatic, Manual, Machine, or Semi-Automatic)
*JOINTS (QW-402) Details JOINT DETAILS
Joint Design : V-GROOVE (BUTT JOINT)
Root Spacing : 1-2 mm
Backing : N/A
Backing Material (Type) : N/A
(Refer to both backing and retairners)

θ (Groove Angels : 60 ̊
r (Root Gap) : 1-2 mm
f (Root Face) : 1-2 mm
T : 10-25 mm

*BASE METALS (QW-403)

P No : 6 Group No : 4 To P No. : 6 Group No : 4
Or
Specification and type/grade or UNS number : ASTM A743 Gr.CA6NM
To Specification and type/grade or UNS number : ASTM A743 Gr.CA6NM
Or
Chemical Analysis and Mechanical Properties : -
to Chemical Analysis and Mechanical Properties : -
Thickness Ranger
Base Metal : Groove 10 mm up to 25 mm Fillet Metal ALL
Maximum Pass Thickness ≤ 1/2 in. (13 mm) : YES
*FILLER METALS (QW-404)
Welding Process GTAW -
Specification SFA No. SFA-5.9 -
AWS No. (Class) ER 410Nimo -
F No. 6 -
A No. 8 -
Size of Filler Metals Dia 2.4 mm -
Filler Metal Product Form Solid -
Supplemental Filler Metal N/A -
Weld Metal -
Deposited Thickness Range -
Groove Max 25 mm -
Fillet ALL -
Electrode-flux (Class) N/A -
Flux Type N/A -
Flux Trade Name N/A -
Consumable Insert N/A -
Other -
*Each base metal-filler metal combination should be recorded individually
POSITION (QW-405) POST WELD HEAT TREATMENT (QW-407)
Position(s) of Groove 1G (Flat) Temperature Range : 575 ̊C
Welding Progression N/A Down N/A Time Range (Holding) : -
Position(s) of Fillet ALL

PREHEAT (QW-406) GAS (QW-408)

Preheat Temparature, Minimum 200 ̊C Percent Composition
Interpass Temparatur, Maximum 180 ̊C Gas(es) (Mixture) Flow Rate
Preheat Maintenance N/A Shielding ARGON 99.99% 10-20 lt/min
Other Trailing N/A N/A N/A
Backing Gas N/A N/A N/A