DB21/T 4173-2025 Active Liaoning ProvinceLocal standards

DB21/T 4173-2025 Urban Underground Comprehensive Pipe Tunneling Engineering Technical Specification

DB21/T 4173-2025 Urban Underground Comprehensive Pipe Tunneling Engineering Technical Specification

Publish Date: 2025-08-30 Implement Date: 2025-09-30 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 4173-2025
Standard Type: Local standards
Standard Status: Active
is_force_gb: no
CCS Name: Engineering structure
ICS Name: Earthwork, excavation, foundation construction, and underground engineering
Publish Date: 2025-08-30
Implement Date: 2025-09-30

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