Manufacturer of anti-corrosion steel pipes with cement mortar for engineering use

Description :

　　The anti-corrosion coating for the inner wall of steel pipes with cement mortar lining is cement mortar. The raw material is a mixture of cement, sand, and water. Usually, the ratio of water, cement, and sand is used for production. Then, the mixed cement mortar is applied to the cleaned inner wall of the pipeline in one or more times according to the design thickness requirements. After a certain period of curing, a high-strength circular shell lining layer is formed, which is closely combined with the inner wall of the pipeline. Today's quality creates tomorrow's brilliant market. Cangzhou Longdu strictly controls the quality of the door to supply customers with high-quality products, ensuring quality assurance and complete specifications. With a good reputation, products, strong strength, and low prices, it is well-known in many provinces, municipalities, autonomous regions, and municipalities directly under the central government in China. The products are highly trusted and welcomed by users. New and old customers come to the factory to inquire!

　　The anti-corrosion performance of the cement mortar lined anti-corrosion steel pipe is reliable. The inner wall of the cement mortar lined anti-corrosion steel pipe is isolated from water or air, forming a dense protective layer, thus inhibiting the oxidation and corrosion scaling of the inner wall of the steel pipe. Compared with other anti-corrosion coatings, the cement mortar has a large adhesive force to the inner wall of the steel pipe, because the gel formed by the hydration of cement particles has a binding force on the inner wall of the steel pipe. When the cement mortar hardens, its volume shrinks and clings to the inner wall of the steel pipe, producing friction. The inner wall of the steel pipe is uneven, and the squeezing force is formed by the mechanical engagement between the cement mortar and the cement mortar. The existence of the above bonding stress, and the thermal expansion coefficient of the cement mortar and the steel pipe are basically the same, so that the cement mortar closely combines with the inner wall of the steel pipe. It is not easy to peel off, here is the introduction! The production of anti-corrosion steel pipes with cement mortar by centrifugal method includes two methods: ground centrifugal method. Mainly suitable for the construction of pipeline lining below DN400 caliber. But it is the underground spraying method, strict cement mortar anti-corrosion steel pipe production standards, to ensure smooth sewage treatment. The hydrostatic burst test for spiral welded pipes is a destructive test. After the pipe plate undergoes full surface ultrasonic inspection and passes the X-ray inspection, hydrostatic pressure test, ultrasonic inspection, wall thickness and tensile performance inspection, the qualified steel pipe is used as the burst test pipe. For spiral welded pipes used in important oil and gas transmission pipelines, the technical standard specifications require the pipe manufacturer to conduct hydrostatic pressure tests and provide a blasting test report. Due to the concrete filling inside the steel pipe, it can absorb a large amount of heat energy. Therefore, the distribution of temperature field in the cross-section of the pipe column during a fire is very uneven, which increases the fire resistance time of the column, slows down the heating rate of the steel column, and once the steel column yields, the concrete can bear most of the axial load, preventing structural collapse. The fire resistance of composite beams will also be improved, as the temperature of the steel beams will be reduced by transferring heat from the top flange to the concrete. Experimental statistical data shows that meeting the requirement of a first level fire resistance of 3 hours can save 1/3 to 2/3 or even more fireproof coatings compared to steel columns. As the diameter of the steel pipe increases, more coatings can be saved. It is not easy to win a customer, but it is easy to lose one. Improving the quality of after-sales service and enhancing customer satisfaction can better retain every customer. What customers think of is to achieve steel pipes.

AfterSalesService :

• Cement mortar anti-corrosion steel pipe