本文件建立了一个程序，用于验证石油、石化和天然气行业专用材料制造商在相关金属材料等级以及必要的设施和设备方面具有足够的能力和经验，根据买方规定的适用标准、材料规范和/或材料数据表，以所需形状和尺寸制造这些材料，并具有可接受的性能。 本文件适用于买方指定的各种材料、产品形式和制造工艺的制造商。制定本文件时，特别考虑但不限于: a） 双相不锈钢； b） 高合金奥氏体不锈钢； c） 镍基合金； d） 钛及其合金。 本文件也适用于感应弯曲和应变硬化产品的工艺。

This document establishes a procedure for verifying that the manufacturer of special materials for the petroleum, petrochemical and natural gas industries has sufficient competence and experience of the relevant material grades of metal, and the necessary facilities and equipment, to manufacture these materials in the required shapes and sizes with acceptable properties according to the applicable standard, material specification and/or material data sheet specified by the purchaser. This document is applicable to manufacturers of various materials, product forms and manufacturing processes when specified by the purchaser. This document has been established considering especially, but not exclusively: a) duplex stainless steel; b) high alloyed austenitic stainless steel; c) nickel-based alloys; d) titanium and its alloys. This document is also applicable to the processes of induction bending and strain-hardened products.