Cement concrete pipe and box culvert is an indispensable cement product in urban and rural construction, which is widely used in urban drainage pipelines and farmland water conservancy projects. Cement concrete pipes not only have the advantages of high stiffness, high strength and good durability, but also excel in wide sources of raw materials, convenient processing and low cost, so this kind of pipes are almost produced and used all over the world.

With China's urban underground infrastructure construction, urbanization construction, sponge city construction and urban utility tunnel construction improved, cement concrete pipe and box culvert enjoys wider application. Besides drainage and sewage discharge, it is developed into the fields of power tunnels, prefabricated assembly duct banks, underground railway passages, underground reservoirs, deep tunnels and prefabricated assembly concrete inspection wells, etc.

At present, China has become a world power in pipe and box culvert production and application.

With the continuous reform, innovation and development of the country for decades, China has become the country with the largest production and use of concrete and reinforced concrete pipe and box culvert in the world, with the latter become one of the largest industries in China's cement products industry. According to incomplete statistics, there are about 5,000 pipe and box culvert manufacturers of various sizes in China; The maximum specification for manufacturing and application of reinforced concrete drainage pipe products has exceeded 4000mm; The maximum section of prefabricated rectangular pipe jacking is 14.8m X 9.426m; Large diameter reinforced concrete pipes over Φ3500mm and rectangular box culverts over 6m-7m are widely used in utility tunnel, power tunnels and subway tunnels across the country.

Now during the period of rapid development of underground base facilities, the process technology, product structure and production equipment of concrete pipe and box culvert are undergoing great changes, with the continuous improvement of product technology, innovation of equipment technology and expansion of product application. The dense network of pipelines is the meridian of modern civilized urban and rural areas. With the expansion of urban regional planning, the continuous improvement of urban functions, the underground drainage and sewage system always plays a pivotal role in those developments, which is related to the living environment quality of each of us. According to “the Development Status and Trend Analysis of Urban Drainage Pipeline Industry in 2019”, the cumulative length of urban drainage pipeline in China has reached 743,982 kilometers in 2019. Despite such a huge volume, the drain pipe is still growing at an annual rate of about 8%. It can be predicted that with the improvement of China's urbanization and the renovation and transformation of cities, the requirements for urban sewage discharge capacity will be further improved and enhanced, and the length of urban drainage pipeline will continue to maintain rapid growth in the future, which means the urban drainage pipeline industry still has a huge market potential.

2021 is the first year of China's "14th Five-Year Plan", and also a year of hard struggles under the situation of normalization of pandemic prevention and control. Under the guidance of the national policy of strengthening underground infrastructure construction and promoting innovation and development, and driven by major construction projects, the concrete pipe and box culvert industry strives to overcome the difficulties brought by the pandemic. The production and operation activities of some regions and enterprises have maintained steady recovery, with a good production and operation situation. According to incomplete statistics, in the first three quarters of 2021, the national output of drainage pipes reached 60,300 kilometers.

In order to better show the great contribution of China's pipe and box culvert industry to national economic construction, a "Pipe and Box Culvert Special Zone" will be set up at the "2021-2022 China Concrete Exhibition" in Nanjing of Jiangsu Province from March 30th to April 1st, 2022. Many enterprises from all over the country will bring new products, new equipment and new technologies to the exhibition, and many core enterprises will conduct technical exchanges, and experts in the industry will answer questions on the spot, conducting targeted case analysis and discussing the development plan of the industry.