Huizhou Reinforced Concrete Pipe Manufacturer, Market Prices, Wholesale Prices, Supply by Dongguan Songshulin Environmental Protection Building Materials Co., Ltd. Used for conveying fluids such as water, oil, and gas. Concrete pipes are categorized into four types: plain concrete pipes, ordinary reinforced concrete pipes, prestressed reinforced concrete pipes, and pre-stressed concrete pipes. Depending on the internal diameter, they can be classified as small diameter pipes (below 400mm), medium diameter pipes (400-1400mm), and large diameter pipes (above 1400mm). According to the water pressure-bearing capacity, they can be divided into low-pressure pipes and pressure pipes, with working pressures typically ranging from 0.4 to 1.2 MPa. Compared to steel pipes, concrete pipes can be further categorized by joint type into flat-end pipes, socket-and-spigot pipes, and tongue-and-groove pipes. Their joint types include cement mortar belting, wire mesh cement mortar belting, cement mortar socket-and-spigot, and rubber ring socket-and-spigot. Concrete pipes are made from batch concrete or reinforced concrete and are used for conveying fluids. They are available in four types: plain concrete pipes, ordinary reinforced concrete pipes, self-compacting reinforced concrete pipes, and prestressed concrete pipes. Their main feature is the use of self-compacting cement (see special cement) to produce pre-stress during the hardening process, simplifying the manufacturing process. Compared to steel pipes, concrete pipes can save a significant amount of steel, extend service life, require less investment for construction, and are easy to install, making them widely used in factories, mines, oil fields, ports, urban construction, and irrigation projects.