本标准规定了在特别低至冻结点或以下的温度下用于管内和外之间的热交换用途的钢管。例如,换热器钢管和冷凝器钢管(以下简称管子)。
This Standard specifies the steel tubes used for the purpose of exchanging the heat between the inside and the outside of tubes at exceptionally low temperatures of freezing point or under, such as heat exchanger tubes and condenser tubes (hereafter referred to as tubes).