ANSI/NACE MR0175/ISO 15156的本部分描述了一般原则，并给出了要求和建议 用于所用设备的金属材料的选择和鉴定建议 在石油和天然气生产以及含H2S环境中的天然气脱硫厂中 此类设备的故障可能会对公众和人员的健康和安全，或 环境。它可以用来帮助避免设备本身遭受昂贵的腐蚀损坏。信息技术 补充但不取代适当设计规范中给出的材料要求， 标准或法规。

This part of ANSI/NACE MR0175/ISO 15156 describes general principles and gives requirements and recommendations for the selection and qualification of metallic materials for service in equipment used in oil and gas production and in natural-gas sweetening plants in H2S-containing environments, where the failure of such equipment can pose a risk to the health and safety of the public and personnel or to the environment. It can be applied to help to avoid costly corrosion damage to the equipment itself. It supplements, but does not replace, the materials requirements given in the appropriate design codes, standards, or regulations.