Manufacturer of large-diameter cement mortar anti-corrosion steel pipes

Description :

　　Large caliber cement mortar anti-corrosion steel pipes are manufactured with cement mortar lining. Ordinary cement is mixed with a certain thickness of yellow sand and additives according to the designed mix ratio to make mortar. Through specialized construction machinery and equipment, it is applied to the inner wall of the pipeline to form a certain thickness of mortar coating. After solidification, it becomes the lining. The mortar layer is combined with the pipeline to form a passive area with a pH value of up to 12 on the pipe wall surface. After water is supplied, the water seeps into the cement mortar, which is rich in alkaline components, making the water no longer corrosive when it reaches the pipe wall. The local occurrence of large-area hollowing in cement mortar lining can be summarized into three main reasons: firstly, the local occurrence of sanding on the pipe wall due to rust removal affects the bonding force between the mortar base and the pipe wall. This can be avoided by strengthening supervision during rust removal; *We need to strengthen the wet curing strength of the mortar lining layer. Compared with traditional epoxy resin mortar, acrylic emulsion mortar demonstrates its superiority, with low cost and convenient construction. The construction of acrylic mortar is similar to ordinary mortar, which can be manually applied or mechanically sprayed, and is suitable for bonding on damp surfaces. It is non-toxic, adaptable to the temperature of foundation concrete, resistant to atmospheric aging, and has a service life similar to ordinary cement mortar. It overcomes the disadvantage of epoxy mortar often cracking and falling off due to its larger expansion coefficient than the foundation concrete.

　　In recent years, pumping bricks has become quite common, and on-site pouring is not difficult. China has created and widely used the construction method of high-level throwing and non vibrating concrete, which simplifies the process of on-site pouring concrete and can put the concrete in a lateral compression state. Its compressive strength can be doubled. At the same time, due to the presence of concrete, the stiffness of the steel pipe is increased, and the two work together to greatly improve the bearing capacity. As an emerging composite structure, steel reinforced concrete mainly consists of compression members with small axial compression and eccentric force, which simplifies construction. There is also a method of opening temporary pouring holes at the bottom of the pipe column and pouring concrete from bottom to top using a concrete pump, which is both fast and ensures the quality of pouring. Moreover, after pouring, the steel pipe is under relatively stable humidity conditions, making it difficult for moisture to evaporate, eliminating the need for watering and curing processes, and simplifying the concrete curing process.

　　Cement mortar anti-corrosion steel pipes can be used in municipal engineering: suitable for high-rise building water supply, heating network, water engineering, gas transmission, buried water transmission and other pipelines. The cement mortar lining, relying on its own bonding force and the support of the pipeline wall, has a uniform, dense, hard and firm structure. If epoxy resin is applied to the surface of the mortar, its roughness coefficient after water flow can be further reduced. Cement mortar lining is not only a simple physical barrier, but also protects pipelines through the chemical properties of cement mortar lining. Petroleum: Process pipelines for transporting corrosive media in industries such as petroleum transportation pipelines, chemical manufacturing, and printing and dyeing. Sewage treatment: Sewage treatment discharge pipes, sewage pipes, and biological pool anti-corrosion engineering. Agriculture: agricultural irrigation pipes, deep well pipes, drainage pipes, and other networks have better corrosion resistance than steel structures, which is beneficial for the fire resistance and prevention of steel pipes.

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