T/GDID 1033-2021 New ventilation system uses hard polyvinyl chloride (PVC-U) pipe
T/GDID 1033-2021 New ventilation system uses hard polyvinyl chloride (PVC-U) pipe
Basic Information
Scope
Scope: This document specifies the terms and definitions, materials, classification, connection methods, technical requirements, test methods, inspection rules, marking, transportation, and storage of hard polyvinyl chloride (PVC-U) pipes used in fresh air systems. This document is applicable to hard polyvinyl chloride (PVC-U) pipes (hereinafter referred to as "pipes") made from polyvinyl chloride resin as the main raw material, with the addition of necessary additives, and extruded for use in micro-pressure fresh air systems, low-pressure fresh air systems, and medium-pressure fresh air systems in civil building fresh air systems projects; Main technical content: The main technical content includes terms and definitions, materials, classification, connection methods, technical requirements, test methods, inspection rules, marking, transportation, and storage.