Anti-corrosion spiral steel pipe is to carry out anti-corrosion treatment on spiral steel pipe. The main anti-corrosion method is polyurethane anti-corrosion spiral pipe. After preliminary treatment such as de-rusting the steel pipe, it is then put on a polyethylene jacket. The thickness is determined according to the customer's needs. Foam is filled between the pipe body and the polyethylene skin, and the thickness of the foam is also processed according to customer needs.

The installation of anti-corrosion spiral steel pipes can be either overhead or buried. Anti-corrosion spiral steel pipe toughness: The so-called toughness refers to the ability of metal materials to not be damaged under the action of impact force (dynamic load). Resistance includes impact toughness and impact absorption energy index. Impact toughness of anti-corrosion spiral steel pipe: Impact toughness is a mechanical performance index used to evaluate the impact resistance of metal materials under dynamic loads.

Generally, the high-energy primary impact value (αKU or αKV) is used as the standard. It uses standard specimens of size and shape to conduct experiments on a pendulum-type primary impact testing machine. Experimental results, impact absorption energy of anti-corrosion spiral steel pipe: due to the size of αK value. It not only depends on the material itself but also changes with changes in sample size, shape, and experimental temperature, so the αK value is only a relative indicator.

The world directly chooses impact absorption work AK as the target of impact toughness. The main straight pipe of the anti-corrosion spiral steel pipe is prefabricated with an anti-corrosion layer in the factory, and a patching section is reserved, and then welded on site, and then patched with a heat shrink sleeve or heat shrink tape. As for the bent pipe part, the most commonly used process now is Using heat-shrinkable wrapping tape to make anti-corrosion spiral steel pipes of the same grade. However, the disadvantage of this anti-corrosion process is that it cannot be constructed in a mechanized assembly line and can only be wrapped manually, which is time-consuming and has high material costs.

Thick-walled spiral steel pipe refers to a spiral steel pipe whose wall thickness is slightly thicker than that of ordinary spiral steel pipes. The advantages of spiral steel pipes with ordinary wall thickness are high compressive strength, high impact strength, high performance, and long service life. The implementation standards include 5037, 9711, and the thick-walled spiral steel pipe forming process. Before the spiral steel pipe is formed, the spiral steel pipe adopts the manufacturing process of double-sided submerged arc welding.

Welding can be completed in the best position, and defects such as wrong edges, welding deviations, and incomplete welding are not prone to occur, and the welding quality and position can be easily controlled. The spiral steel pipe adopts a special welding process, which can be welded in the best welding position without any errors and defects, ensuring the qualification of the spiral steel pipe and ensuring quality. During the forming process of spiral steel pipe, the steel plate must be deformed evenly.

The residual stress is small and the surface should not be scratched. Therefore, the steel plate for manufacturing spiral steel pipes should be carefully selected and the surface should be uniform without scratches. The processed spiral steel pipe has greater flexibility in the standard range of diameter and wall thickness. Especially in the production of high-grade thick-walled pipes, especially small and medium-diameter thick-walled pipes, it has advantages that other processes cannot match and can be satisfied. Users have many requirements in terms of spiral steel pipe standards.

The diameter and standard range of spiral steel pipes must be flexibly controlled. The outstanding advantages of using them and the broad needs of users are the development direction of spiral steel pipes that can popularize and promote thick-walled spiral steel pipes. With the development of industry, engineering proposals for the use of spiral pipes To meet the higher requirements, reason why thick-walled spiral pipes appear is because the pressure generated by some media that need to be transported is unacceptable to ordinary spiral steel pipes.

If we switch to straight seam steel pipes or seamless steel pipes, it will greatly increase the cost of the project. If it is a hazardous medium, we will inevitably increase the cost. Therefore, when choosing a pipeline, it is based on the medium transported by the project and the medium will be transported. The pressure that occurs determines.

Water can carry or overturn a boat, and the same financial instrument is also a double-edged sword. It can not only bring considerable economic benefits to enterprises but also cause huge losses to enterprises when they operate and develop investments without planning. The Year of the Horse is in the early stages of a new round of reform and development. The relatively stable factor predicted is that the operating costs of spiral steel pipes will continue to rise. It is still difficult for enterprises to operate.

Funds are relatively serious, and the effect of shopping mall regulation on spiral steel pipes is not obvious. The fluctuations in supply and demand are limited and the frequency of market fluctuations is accelerating. When connecting large-diameter spiral steel pipes, the interfaces must be aligned. If the resistance is too large and the connection cannot be forced, the rubber ring may be distorted.

If the project is interrupted during the laying of large-diameter spiral steel pipe installations, the pipe end should be sealed to prevent debris from flowing into the pipe. Before pressure testing, the center of each pipe should be covered with soil. Use small wooden blocks to stabilize the laid pipe body to avoid displacement when connecting the curved section of the pipe. I hope the above introduction will be helpful to everyone, please feel free to consult us at any time.

The company has successively introduced the excellent Lincoln large-diameter straight seam steel pipe automatic welding equipment from the United States to produce 4 large-diameter straight seam steel pipe production lines, as well as excellent German steel pipe production equipment, which has the characteristics of high technological content and excellent process technology. Two sets of thermal expansion production lines, one set of high-frequency welding production lines, and one set of diameter reduction production lines have excellent automated welding equipment and testing equipment, which can provide customers across the country with special specifications of non-standard round pipes (seamless, straight seam), straight seam steel pipes, clamp-type acoustic detection pipes, dredging steel pipes, gas steel pipes, pump pipes, and other products. It has the characteristics of high product precision, fast delivery, and customized processing of products with special specifications.

The specifications of various non-model wall thickness steel pipes can reach more than 1,000 types, with a daily output of more than 800 tons; the production cycle is short and the delivery is fast. It is widely used in dredging, gas drainage, oil, natural gas, steel structures, thermal power generation, ship manufacturing, foundation piling, and other major projects.