本文件规定了再生式热交换器中的型钢热交换器面板在装入篮子之前和之后，通过任何工艺（如湿浸、湿流涂层、湿喷涂、湿静电喷涂、湿电沉积或干粉静电喷涂）涂覆的搪瓷涂层的最低要求和功能特性。 对于非常恶劣的使用条件，或为了延长使用寿命，客户和供应商可以商定更严格的限制。

This document specifies the minimum requirements and the functional characteristics of enamel coatings applied by any process, such as wet dipping, wet flow-coating, wet spraying, wet electrostatic spraying, wet electrodeposition or dry-powder electrostatic spraying, to profiled steel heat exchanger panels in regenerative heat exchangers, before and after packing in baskets. For very severe service conditions, or to obtain extended operational life, more stringent limits can be agreed between customer and supplier.