【Ten Years of Rapid Development in Chemical Processing Equipment】International standards for corrosion-resistant alloy composite elbows and fittings issued from 2018 to 2023

Thread Content

This post was last edited by Desert Fish on 2023-3-19 at 17:04. At the beginning of March, the international standard ISO 24139-2 \"Corrosion-resistant alloy lined composite elbows and fittings for pipeline transportation systems in the oil and gas industry – Part 2: Composite fittings\", developed under the leadership of the Engineering Materials Research Institute of China National Petroleum Corporation, was officially released. This represents a new breakthrough achieved by CNPC in terms of technological innovation and international standardization efforts in the field of pipeline transportation of key products. 　　The lining process for corrosion-resistant alloys is an environmentally friendly, economical, and effective advanced manufacturing technique that can effectively address the severe corrosion issues in onshore and offshore oil and gas transmission systems containing hydrogen sulfide, carbon dioxide, and other substances, while also significantly reducing the amount of corrosion-resistant alloy tubing required. Due to the lack of relevant international standards in the past, the manufacturing and application of compound elbows and pipe fittings have faced numerous challenges in areas such as product design, material selection, manufacturing, and inspection. 　　With the support of China National Petroleum Corporation’s research projects, the Institute of Engineering Materials has conducted in-depth research and continuous efforts over more than 10 years on topics such as the material selection, structural design, manufacturing processes, performance evaluation, and technical standards for corrosion-resistant alloy composite pipes, elbows, and fittings. As a result, a comprehensive technical system with independent intellectual property rights has been developed. On this basis, in May 2019, an international standard proposal titled \"Corrosion-resistant alloy lined composite elbows and fittings for pipeline transportation systems in the oil and gas industry\", led by the Research Institute of Engineering Materials, was initiated, marking a breakthrough as China took the lead in formulating international standards for oil pipelines. Over the past 3 years, an international working group composed of technical experts from China, Italy, Germany, and other countries has conducted repeated discussions and consultations on more than 400 technical proposals, and completed the compilation work after multiple rounds of international voting. Among them, Part 1 of the ISO 24139 international standard: Elbows was released in November 2022. 　　Corrosion-resistant alloy composite elbows and fittings are important products for the green and low-carbon transformation of the oil and gas industry. The formulation and issuance of this international standard have expanded the scope for international cooperation and exchange in China’s petroleum pipeline technology, enhanced China’s influence in the petroleum industry as well as its ability to shape industry standards. It lays a foundation for strengthening global collaboration in the research and development of high-end green petroleum pipelines, and for enabling Chinese products and technologies to compete on the international stage.