The manufacturer supplies cement mortar anti-corrosion steel pipes, TPEP anti-corrosion steel pipes, internal and external anti-corrosion spiral steel pipes

Description :

　　After the construction of cement mortar anti-corrosion steel pipes is completed, improper curing usually causes the thicker cement mortar layer to shrink and produce cracks. In order to enhance the bonding force between the mortar layer and the pipe wall, improve the overall stress performance of the lining layer, and prevent falling, a wire mesh was hung on the inner wall of the pipeline during the construction of the large-diameter steel pipe lining. Short steel bars were spot welded to make the mesh firmly adhere to the pipe wall, which indeed strengthened the bonding force between the lining layer and the pipe wall in practice.

　　The price of cement mortar anti-corrosion steel pipes for buried and exposed pipes is to use galvanized wire mesh for internal anti-corrosion, and to spray cement mortar lining with a compressive strength of not less than 30N/mm2. The cement mortar mix ratio is: water: cement: sand=22:200:270; Using domestic water; Portland cement; Hard, clean, and well graded natural sand with a mud content of less than 2% and a large particle size of less than 1.2mm. Rust removal: After the acceptance of steel pipe installation, welding, backfilling and covering, vertical displacement, etc., use a wire wheel brush to thoroughly remove floating rust, oxide scale, welding slag, oil stains, etc. inside the pipeline. Bangzha galvanized wire mesh: laying wire mesh with a diameter of 3mm, grid size of 50mm × 50mm, mesh spacing of 10mm, no wire mesh is laid within the range of 1380mm arc length at the bottom of the steel pipe to facilitate the walking of the spraying trolley; Q235 steel bars with a diameter of 6 and a length of 7mm are placed between the wire mesh and the pipe wall, and spot welded with a spacing of 350mm. The inner wall of the steel pipe is 9mm away from the surface of the wire. Cement mortar anti-corrosion steel pipes are made by mixing ordinary cement with a certain thickness of yellow sand and additives according to the designed mix ratio, and then applied to the inner wall of the pipeline through specialized construction machinery and equipment to form a certain thickness of mortar coating. After solidification, it becomes a lining. 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 on the surface of the mortar. Mechanical spraying of cement mortar: sprayed in two layers, with the first layer sprayed 10-12mm thick and the second layer sprayed 8-10mm, ensuring smooth and even scraping. Maintenance: After spraying a section of steel pipe, immediately seal all ventilation holes to keep the inside of the pipe moist and carry out maintenance. Inspection and acceptance: Measure the anti-corrosion thickness and surface flatness, check for cracks and hollowing, and ensure that the compressive strength of the cement slurry reaches 30N/m 2. Any areas that exceed the standard should be treated to meet the specifications. Spray cement mortar lining with compressive strength not less than 30N/mm2. The cement mortar mix ratio is: water: cement: sand; Using domestic water; Portland cement; Hard, clean, and well graded natural sand with a mud content of less than 2% and a large particle size of less than 1.2mm. Rust removal: After the acceptance of steel pipe installation, welding, backfilling and covering, vertical displacement, etc., use a wire wheel brush to thoroughly remove floating rust, oxide scale, welding slag, oil stains, etc. inside the pipeline.

　　Cement mortar lined anti-corrosion steel pipes have the following obvious advantages: 1. To avoid the formation of corrosion and rust on the inner wall of the pipeline, and to maintain a good water supply condition for a long time with a low friction coefficient. 2. Due to the insulation of the lining coating, the water does not come into contact with the metal pipeline, ensuring water quality. 3. The inner wall of the pipeline is anti-corrosion with cement mortar, which prevents corrosion perforation and extends the service life of the pipeline. The material for cement mortar coating is easy to obtain, the construction period is short, the anti-corrosion effect is good, and the cost of pipeline engineering is reduced. Given the above advantages of cement mortar lined anti-corrosion steel pipes, their anti-corrosion function and economy have been increasingly recognized by engineering and technical departments at home and abroad. In large and medium-sized cities in China, cement mortar is used as the main point of internal anti-corrosion for water supply metal pipelines. The country has also formulated specifications and quality standards for cement mortar lining for this purpose.

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