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Pretensioned prestressed high strength concrete pipe pile (PHC pile) is the most commonly used cement product in building infrastructure at present. It has the characteristics of high strength (above 80MPa), high density, low water cement ratio, low permeability (impermeability grade > P12), impact resistance and high structural bearing capacity. It is widely used in industrial and civil buildings, roads and railways, bridges, ports and wharves and other engineering structures.

PHC pipe pile will encounter the erosion of harmful ions in corrosive geology, such as chloride ion, sulfate ion, carbonate ion, freeze-thaw damage and so on. In view of chloride penetration, sulfate erosion and freeze-thaw three kinds of environmental conditions, the company's technical personnel have been working since 2004 According to different corrosion conditions and the contribution of different admixtures to different environment, the durability index of pipe pile concrete is determined, and dphc pipe pile series products are formed. In 2006, dphc pipe pile series products passed the achievement appraisal organized by China Building Materials Federation and formed enterprise standards.

Prefabricated building divides the wall, column, beam, floor and roof into components, which are prefabricated in the factory, and then transported to the construction site for assembly. "Assembly" is just like building a house by building blocks, combining prefabricated components to form a whole building. Industrialized building construction method has been widely used in Europe, America and other developed countries, and the technology has been quite mature