GB 23971-2025 Organic heat transfer fluids
GB 23971-2025 Organic heat transfer fluids
Basic Information
Scope
This document specifies the classification and marking, requirements, and test methods for unused mineral oil-based and synthetic organic heat transfer fluids, as well as inspection rules, labeling, packaging, transportation, storage, and safety.
This document applies to organic heat transfer fluids used in various types of indirect heat transfer systems.
This document does not apply to organic heat transfer fluids directly used for heating or cooling chemicals with oxidizing properties.
This document does not apply to organic heat transfer fluids produced from recycled processing oils.
Note: Products classified as L-QA according to GB/T 7631.12 are not suitable for use in organic heat transfer boilers. This document does not apply to products classified as L-QA according to GB/T 7631.12.