标准编号：ISO 28721-1:2019
中文名称：搪玻璃釉 加工厂用搪玻璃仪器 第1部分：仪器、组件、器具和附件的质量要求
英文名称：Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 1: Quality requirements for apparatus, components, appliances and accessories
发布日期：2019-09
标准范围
This document specifies the quality requirements for apparatus, components, appliances and
accessories of glass-lined steel (including semi-crystallized enamel coatings) and glass-lined steel
castings used for process plants. It specifies the quality requirements and the tests to be carried out by
the manufacturer as well as the actions to be taken to repair defects.
It is also applicable to glass-lined pumps, pump components and fittings.
It does not apply to glass-lined flanged steel pipes or glass-lined flanged steel fittings.
NOTE 1 Provisions for glass-lined flanged steel pipes and glass-lined flanged steel fittings are given in
ISO 28721-4.
The test methods specified cover checking the enamel, the dimensional accuracy and the performance
of apparatus and components.
This document is applicable to new apparatus and components as well as used items that have been re-
enamelled.
It does not contain requirements regarding the chemical or physical properties of vitreous and
porcelain enamels.
NOTE 2 Examples of test reports are given in Annex A.
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