本标准旨在提供冷水表置换式塑料主外壳的最低要求，包括材料和设计。本标准可在《冷水表采购和接收规范》中引用，该规范为置换式塑料主外壳。本标准可作为制造此类仪表的指南。本标准的规定适用于引用本文件时，且仅适用于冷水表位移式塑料主壳体。

The purpose of this standard is to provide the minimum requirements for cold-water meters—displacement type, plastic main case, including materials and design. This standard can be referenced in specifications for purchasing and receiving cold-water meters—displacement type, plastic main case. This standard can be used as a guide for manufacturing this type of meter. The stipulations of this standard apply when this document has been referenced and only to cold-water meters—displacement type, plastic main case.