PCCP patent

　　Beijing Hanjian Heshan Pipe Industry Co., Ltd. established a technology research and development center in 2005. Under the leadership of the technology research and development center, the "General Technical Conditions for PCCP External Surface Anti-corrosion Coatings", "Solvent-Free Epoxy Tar Heavy Anti-Corrosion Coating Construction Technology Standards", "PCCP External Surface Anti-corrosion Quality Technical Inspection" were formulated in cooperation with relevant units. Standard” and other relevant standards urgently needed for the South-to-North Water Diversion Project, which promoted the smooth progress of the project; together with Tsinghua University, China Academy of Water Resources and Electric Power, Beijing Water Resources Planning and Design Institute and other units, they jointly undertook the “Eleventh Five-Year” National Science and Technology Support Project “Large Diameter PCCP Pipeline” "Structural Safety and Quality Control Research" project (Project No.: 2006BAB04A04-04), this project won the 2011 China Water Conservancy Industry's Highest Award - Dayu Award; 2008 The company's "Super Large Diameter PCCP Complete Set of Production Technology and Application Development of Key Equipment" Won the second prize of the National Building Materials Industry Science and Technology Progress Award; participated in the revision of the CECS140 standard of "Design Regulations for Buried Prestressed Concrete Pipes and Prestressed Concrete Pipes in Water Supply and Drainage Engineering"; published "Research on High Performance Concrete for PCCP Pipe Cores" , more than 20 high-quality papers such as "Control Measures of PCCP Core Concrete Total Alkali Content and Research on Inhibitory Measures of Aggregate Alkali Activity"; applied for 8 invention patents and utility model patents; in 2010, the company was re-identified as a National high-tech enterprise. At present, the company's Beijing production base is applying for "PCCP Engineering Technology Research and Development Center for Building Materials Industry".

National Building Materials Industry Science and Technology Progress Second Prize

　　With its huge enterprise scale, advanced production technology and first-class product quality, it ranks in the first echelon of the industry. The successful development of DN4000 PCCP provides a detailed practical basis for the formulation of the national standard for super-large diameter PCCP; in view of the outstanding contribution to the South-to-North Water Diversion Project, it won the "Beijing South-to-North Water Diversion Project Outstanding Achievement Award (Scientific Research Category) First Prize", "National Building materials industry science and technology progress second prize" and other honors.

patent

　　Together with Tsinghua University, Chinese Academy of Water Conservancy, Beijing Water Conservancy Survey and Design Institute, Nanjing Water Conservancy Survey and Design Institute and other well-known domestic design and research institutions, we have undertaken the "Eleventh Five-Year" project of the State Science and Technology Commission: "Safety and Quality of Super-large Diameter PCCP Pipeline Structures" Control Research", the prototype mechanical properties test of DN4000 PCCP was carried out for the first time in the world, and important results were obtained.

Steel drum spiral welding machine, trigger release

State Science and Technology Commission "Eleventh Five-Year" project prototype test site