This document specifies the terms and definitions, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of air conditioning and refrigeration valve core pipes (hereinafter referred to as "valve core pipes"). This document applies to air conditioning and refrigeration valve core tubes made of SUS304 material.
T/QGCML 1138-2023 history
2023T/QGCML 1138-2023 Air conditioning refrigeration valve core pipe