Dalian Yiduo Pipeline Co., Ltd. is located in the Changxing Island Economic Zone of Dalian, covering an area of ​​200,000 square meters. It is a high-tech enterprise integrating R&D, design, manufacturing of expansion joints, compensators, insulation pipes and other products and providing related technical services.

The company has the current domestic advanced product production line, which can manufacture 12-meter diameter corrugated pipe expansion joints, DN1800 six types of sleeve compensator, DN1800 spherical compensator, DN1800 rotary compensator, DN1200 five types of steam insulation pipes, DN1800 nine types Products such as polyurethane insulation pipes, various types of pipeline leakage monitoring systems, etc. It has an advanced position in pressure pipeline design, river crossing pipeline solution design, pipeline leakage monitoring system design and installation, etc., and can provide users with multi-dimensional system services such as design, manufacturing, installation, and maintenance.

The company has a R&D team composed of national experts and has established a complete R&D system. At present, the company has obtained more than 100 product inventions and utility model patents, added more than 10 breakthrough innovation results every year, and has participated in the compilation of more than 20 national and industry standards, contributing to the development and progress of the industry. The company can produce expansion joints, compensators, insulation pipes and other products according to international standards such as Europe and the United States. In 2005, it obtained the "Certificate of Compliance for Products Using International Standards" issued by the Technical Supervision Department.

Yiduo high temperature, high pressure, large diameter, special material corrugated pipe expansion joints have been widely used in nuclear power, petrochemical and other industries. The composite sealed sleeve compensator, corrugated protective sleeve compensator, and spherical compensator have changed the awareness that the compensator is a consumable piece, redefined the life of the compensator, and achieved a new goal of not lower than the life of the pipeline. The well wall seal completely solves the problem of water in the well chamber. The invention of crossing river pipelines makes underwater pipelines as safe as land pipelines. UV-proof pipes and fire-proof pipes allow overhead and pipelines to be prefabricated, and no longer worry about life and safety. The application of leakage monitoring system has achieved energy-saving, safe and intelligent pipelines, and can be known with one mobile phone. Yiduo mobile insulation pipe production line is moved to the user's doorstep in 20 days, produced on-site and served in close range.