Valid

DL/T 679-2025Code of practice for welder technical qualification (English PDF)

焊工技术考核规程

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Issued by

National Energy Administration

Level / Type

National · Recommended

Issue date

September 28, 2025

Implementation date

March 28, 2026

Scope

DL/T 679-2025 is the English-translated version of 焊工技术考核规程.

DL/T 679-2025 is the Chinese industry standard "Code of practice for welder technical qualification". It was issued on September 28, 2025 by the National Energy Administration, and took effect on March 28, 2026. It is in force and replaces DL/T 679-2012.

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Document preview — DL/T 679-2025

National Standard of the People's Republic of China

Issued by: National Energy Administration

Document data

1 Document data

Sector: Electricity & Power (industry standard).

Issuing body: National Energy Administration.

Date of issue: 2025-09-28.

Date of implementation: 2026-03-28.

Status: valid, replaces DL/T 679-2012.

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

Referenced standards

Cited by

Editions of DL/T 679

Edition	Title	Revision	Status
DL/T 679-2025	Code of practice for welder technical qualification	—	Valid
DL/T 679-2012	Code for welder technical qualification	—	Obsolete
DL/T 679-1999	Code for welder technical qualification	—	Obsolete

This page sells the current edition, DL/T 679-2025. Earlier editions are listed for reference only.

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