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GB/T 40740-2021Welding procedures qualification for overlay welding (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40740-2021 (Welding procedures qualification for overlay welding) is available as an English-translated PDF.

GB/T 40740-2021 is the Chinese standard "Welding procedures qualification for overlay welding". Its scope clause reads: This document specifies the test method for surfacing welding procedure qualification.

This document is applicable to processes such as arc welding, gas welding, and electroslag welding. Note. The transition layer surfacing between dissimilar materials is also considered to comply with GB/T 19869.1 welding procedure qualification requirements. Its clauses include terms and definitions.

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Document preview — GB/T 40740-2021

National Standard of the People's Republic of China

Classification: J 33

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Pre-welding process specification (pWPS)
4.1 Corrosion resistant surfacing
4.2 Wear-resistant surfacing
5 Welding procedure qualification test
6 Specimen
6.1 Shape and size of test piece
6.2 Welding of test pieces
7 Test and inspection
7.1 Test content
7.2 Non-destructive testing
7.3 Location and sampling of samples
7.4 Destructive test
7.5 Acceptance criteria
7.6 Retest
8 Scope of accreditation
8.1 Overview
8.2 Conditions related to the manufacturer
8.3 Conditions related to materials
8.4 Surfacing filler material
8.5 About welding process
8.6 Special requirements for welding methods
9 Welding Procedure Qualification Report (WPQR)
Appendix A (informative) Technical differences between this document and ISO 15614-7.2016 and their reasons
Appendix B (Informative) Guide to Classification of Steel
Appendix C (Informative) Welding Procedure Qualification Report (WPQR) Format

1 Scope

This document specifies the test method for surfacing welding procedure qualification.

This document is applicable to processes such as arc welding, gas welding, and electroslag welding.

Note. The transition layer surfacing between dissimilar materials is also considered to comply with GB/T 19869.1 welding procedure qualification requirements.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

GB/T 2653 Bend test method for welded joints (GB/T 2653-2008, ISO 5173..2000, IDT)

GB/T 2654 Welded joint hardness test method (GB/T 2654-2008, ISO 9015-1.2001, IDT)

GB/T 18851.1 Non-destructive testing Penetrant testing Part 1.General rules (GB/T 18851.1-2012, ISO 3452-1.2008,

IDT)

GB/T 19866 Welding procedure specification and general principles of qualification (GB/T 19866-2005, ISO 15607.2003, IDT)

GB/T 19867.1 Arc welding procedure specification (GB/T 19867.1-2005, ISO 15609-1.2004, IDT)

GB/T 19867.2 Gas welding procedure specification (GB/T 19867.2-2008, ISO 15609-2.2001, IDT)

GB/T 19867.3 Electron beam welding procedure specification (GB/T 19867.3-2008, ISO 15609-3.2004, IDT)

GB/T 19867.4 Laser welding procedure specification (GB/T 19867.4-2008, ISO 15609-4.2004, IDT)

GB/T 26951 Non-destructive testing of welds and magnetic particle testing (GB/T 26951-2011, ISO 17638.2003, MOD)

GB/T 26952 Weld non-destructive testing Weld magnetic particle inspection acceptance level (GB/T 26952-2011, ISO 23278.2006,

MOD)

GB/T 26953 Weld non-destructive testing Weld penetration testing acceptance level (GB/T 26953-2011, ISO 23277.2006,

MOD)

GB/T 26955 Destructive test of welds of metallic materials. Macro and micro inspection of welds (GB/T 26955-2011, ISO 17639.

2003, MOD)

GB/T 32259 Non-destructive testing of welds Visual inspection of welded joints (GB/T 32259-2015, ISO 17637..2003, MOD)

GB/T 36037 Flux for submerged arc welding and electroslag welding (GB/T 36037-2018, ISO 14174.2012, MOD)

GB/T 39255 Shielding gas for welding and cutting (GB/T 39255-2020, ISO 14175.2008, MOD)

ISO 17405 Non-destructive testing, ultrasonic testing, welding, rolling and explosive composite interface testing technology (Non-destructive testing-

Ultrasonic testing-Techniqueoftestingcladdingsproducedbywelding,rolingandexplosion)

ISO /T R18491 Welding and related process welding energy measurement guide (Weldingandaliedprocesses-

Guidelinesformeasurementofweldingenergies)

ISO /T R25901 (all parts) Welding and related processes-Vocabulary

3 Terms and definitions

The following terms and definitions defined in GB/T 19866 and ISO /T R25901 (all parts) apply to this document.

GB/T 41112 | GB/T 41110 | GB/T 40801 | GB/T 40733 | GB/T 40732 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 42 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 5173 · ISO 9015 · ISO 3452 · ISO 15607.2003 · ISO 15609 · ISO 17638.2003 · ISO 23278.2006 · ISO 23277.2006 · ISO 17639 · ISO 17637 · ISO 14174.2012 · ISO 14175.2008 · ISO 17405

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