FORM QW-482 SUGGESTED FORMAT FOR WELDING PROCEDURE SPECIFICATIONS (WPS) - Backing Joint Positions Base Metals Filler Metals

Oct 28, 2026

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FORM QW-482 provides a suggested standardized layout for Welding Procedure Specifications (WPS) aligned with ASME Boiler and Pressure Vessel Code references. It captures organizational identifiers, procedure numbers and revision history, required supporting PQR references, welding process and control type, joint design and backing details, base metal and filler metal qualifications, positions and progression, postweld heat treatment, shielding gas composition and flow, preheat and interpass temperature requirements, electrical characteristics for passes, and technique parameters such as bead type and cleaning.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Organization and Revision Information

Welding Process and Type

Joint and Base Metal Requirements

Joint Design and Backing

Base Metals (QW-403)

Filler Metals (QW-404)

Positions and Heat Treatments

Positions (QW-405)

Postweld Heat Treatment (QW-407)

Preheat (QW-406)

Shielding Gas and Electrical Characteristics

Gas (QW-408)

Electrical Characteristics (QW-409)

Welding Technique

FORM QW-482 SUGGESTED FORMAT FOR WELDING PROCEDURE SPECIFICATIONS (WPS) (See QW-200 . 1, Section IX, ASME Boiler and Pressure Vessel Code) Organization Name By Welding Procedure Specification No. Date Supporting PQR No.(s) Revision No. Date Welding Process(es) ~~ ~~ Type(s) (Automatic, Manual, Machine, or Semi-Automatic) | JOINTS (QW-402) Details
Joint Design ~~ ~~Root Spacing Backing: Yes ~~ ~~ No ~~ ~~Backing Material (Type) (Refer to both backing and retainers)
Metal Nonfusing Metal
Nonmetallic Other
Sketches, Production Drawings, Weld Symbols, or Written Description should show the general arrangement of the parts to be welded. Where applicable, the details of weld groove may be specified.
Sketches may be attached to illustrate joint design, weld layers, and bead sequence (e.g., for toughness procedures, for multiple process procedures, etc.) | | --- | | *BASE METALS (QW-403)
[P-No. ](P-No. OR Group No. to)[ OR ](P-No. OR Group No. to)[ Group No. ](P-No. OR Group No. to)~~[ ](P-No. OR Group No. to)~~[ to](P-No. OR Group No. to) P-No. ~~ ~~ Group No. ~~ ~~Specification and type, grade, or UNS Number to Specification and type, grade, or UNS Number
OR
Chem. Analysis and Mech. Prop. to Chem. Analysis and Mech. Prop. Thickness Range:
Base Metal: Groove Fillet
Maximum Pass Thickness 1/2 in. (13 mm) (Yes) ~~ ~~ (No) ~~ ~~
Other | | *FILLER METALS (QW-404) 1 2
Spec. No. (SFA)
AWS No. (Class) F-No.
A-No.
Size of Filler Metals Filler Metal Product Form Supplemental Filler Metal Weld Metal
Deposited Thickness: Groove
Electrode-Flux (Class) Flux Type
Flux Trade Name Consumable Insert Other
Fillet | *Each base metal-filler metal combination should be specified individually. FORM QW-482 (Back) WPS No. Rev. | POSITIONS (QW-405)
Position(s) of Groove Welding Progression: Up Down Position(s) of Fillet Other | | | | | | POSTWELD HEAT TREATMENT (QW-407)
Temperature Range ~~ ~~
Time Range ~~ ~~Other | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | GAS (QW-408)
Percent Composition
Gas(es) (Mixture) Flow Rate
Shielding
Trailing
Backing
Other | | | | | | PREHEAT (QW-406)
Preheat Temperature, Minimum Interpass Temperature, Maximim Preheat Maintenance Other (Continuous or special heating, where applicable, should be specified) | | | | | | | | | | | | ELECTRICAL CHARACTERISTICS (QW-409) | | | | | | | | | | | | Weld
Pass(es) | Process | Filler Metal | | Current
Type and
Polarity | Amps
(Range) | Wire Feed
Speed
(Range) | Energy or
Power
(Range) | Volts
(Range) | Travel
Speed
(Range) | Other
(e.g., Remarks, Comments, Hot Wire Addition, Technique, Torch Angle, etc.) | | | | Classifi
cation | Diameter | | | | | | | | | | | | | | | | | | | | | Amps and volts, or power or energy range, should be specified for each electrode size, position, and thickness, etc.
Pulsing Current Heat Input (max.) Tungsten Electrode Size and Type (Pure Tungsten, 2% Thoriated, etc. ) Mode of Metal Transfer for GMAW (FCAW) (Spray Arc, Short-Circuiting Arc, etc. ) Other | | | | | | | | | | | | TECHNIQUE (QW-410)
String or Weave Bead Orifice, Nozzle, or Gas Cup Size Initial and Interpass Cleaning (Brushing, Grinding, etc.)

Method of Back Gouging Oscillation Contact Tube to Work Distance Multiple or Single Pass (Per Side) Multiple or Single Electrodes Electrode Spacing Peening Other | | | | | | | | | | |

FAQs

What information must be included for a WPS under FORM QW-482?

FORM QW-482 requires organization name, welding procedure number, date, supporting PQR reference(s), revision number and date, welding process details, joint design and backing, base metals and filler metals information, and additional sections for positions, heat treatment, gas, electrical characteristics, and technique.

How does FORM QW-482 specify joint design and backing requirements?

It includes joint design details such as root spacing and backing selection (with backing and without backing), plus backing material type and guidance to use sketches, production drawings, weld symbols, or written descriptions to show general arrangement and weld groove details where applicable.

What electrical and technique parameters are covered in the WPS format?

FORM QW-482 includes electrical characteristics per weld pass (process, filler metal, current type and polarity, amperage range, wire feed speed range, energy/power range, volts range, travel speed range, and remarks). It also provides technique items such as bead type (string or weave), nozzle/orifice or gas cup size, cleaning method, back gouging method, oscillation, contact tube to work distance, pass count, electrode arrangement/spacing, peening, and other technique notes.

Oct 28, 2026

Upload by Kurz