DB21/T 4424-2026 Active Liaoning ProvinceLocal standards

Technical Specifications for the Application of Steel-lined Composite Fire-resistant Ducts of DB21/T 4424-2026

DB21/T 4424-2026

Publish Date: 2026-05-07 Implement Date: 2026-06-07 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: DB21/T 4424-2026

Standard Type: Local standards

Standard Status: Active

is_force_gb: no

CCS Name: Industrial and civil construction projects

ICS Name: \nTechnical aspects

Publish Date: 2026-05-07

Implement Date: 2026-06-07

Development Information

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