【Ten Years of Rapid Development in Chemical Processing Equipment】From 2023 to 2024, Shuangrui’s domestically produced low-temperature expansion joints were used for the first time on large LNG carriers

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Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】A continuously updated summary post – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** In November 2014, the LNG (liquefied natural gas) cryogenic expansion joints developed by Shuangrui Special Equipment of the 725th Research Institute were successfully delivered and passed inspection. They will be used in the 174,000-cubic-meter large-scale LNG carriers manufactured by Hudong-Zhonghua Shipbuilding (Group) Co., Ltd., marking the first time that domestically produced LNG cryogenic expansion joints are utilized in such large-scale LNG carriers. As internationally recognized \"three-high\" products characterized by high technology, high complexity, and high added value, large LNG carriers, along with aircraft carriers and large cruise ships, are regarded as the \"three gems on the crown\" of the shipbuilding industry, representing the highest standards in this field. The low-temperature expansion joint products provided by Shuangrui Special Equipment are key flexible compensation components in the low-temperature piping systems of large LNG carriers, serving functions such as displacement compensation, vibration reduction, noise suppression, and sealing. Due to harsh operating conditions such as extreme temperature differences, severe marine corrosion, and intense vibration, related products had previously relied on imports for a long time. To meet the need for autonomy and control over key core technologies and equipment, Shuangrui Special Equipment has made full use of its decades of technical expertise in the field of expansion joints, as well as its successful experience in developing products such as LNG low-temperature expansion joints. It has overcome the technical challenges associated with low temperatures and impacts faced by low-temperature expansion joints used in LNG carriers, developing key technologies such as impact resistance, fatigue resistance, and corrosion resistance. These products have successfully passed classification society certifications, thereby meeting the requirements for reliable operation of low-temperature pipelines on LNG ships. The Shuangrui intelligent assembly workshop for LNG cryogenic expansion joints, the first of its kind in the industry to be put into use in the second half of this year, provides a solid foundation for ensuring the mass delivery of products. Through intelligent and information-based upgrades, this workshop has significantly improved product quality by adopting smart three-dimensional storage, automated logistics distribution, and automatic welding technologies. Production efficiency has increased by more than twice compared to before, further enhancing the company’s product technology capabilities and manufacturing delivery skills.