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prEN 16726
Gas infrastructure - Quality of gas - Group H
DIN EN 1776
Gas infrastructure - Gas measuring systems - Functional requirements
EN 17928-1
Gas infrastructure - Injection stations - Part 1: General requirements
prEN 1776
Gas infrastructure - Gas measuring systems - Functional requirements
ISO 37176
Smart community infrastructure - Responsiveness assessment and maturity model
DIN EN 15594
Railway applications - Infrastructure - Restoration of rails by electric arc welding
prEN 15594 rev
Railway applications - Infrastructure - Restoration of rails by electric arc welding
ISO/AWI 23987-1
Railway Infrastructure - Switches and crossings - Part 1: Terms and definitions
DIN EN 12583
Gas infrastructure - Compressor stations - Functional requirements; German version EN 12583:2021
