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PROCESO DE PRODUCCIÓN DE ACERO SOLDADO CON JUNTA RECTA P

The straight seam electric welded steel pipe is a steel pipe whose weld seam is longitudinally parallel to the steel pipe. During the production process, it carries out cold rolling or hot rolling steel plate or strip coil welding, and then carries out straight seam welding on the welding equipment to form a straight seam welded pipe. The welding process of straight seam steel pipe is as follows: 1、Plate detection: ultrasonic inspection shall be carried out first after entering the production line to manufacture steel plates for large-diameter submerged arc welded straight seam steel pipes. 2、Milling: use the edge

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COPA DEL MUNDO DE QATAR DIFERENTE

The 2022 Qatar World Cup is in full swing. Many netizens ridiculed that apart from the Chinese football team not going to the World Cup, Chinese elements can be seen in every corner. Many people may not know that the Lusail Stadium, where the opening ceremony was held on November 20, was also designed and built by our country. The steel structure of Lusail Stadium uses about 30,000 tons. The steel structure is divided into 48 V-column trusses, 24 pressure ring trusses, and 48 curtain wall trusses. The steel structure weighing more than 20,000 tons is only supported by

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LA IMPORTANCIA DE DESARROLLAR SUMERGENCIA LONGITUDINAL

At present, pipelines are mainly used for long-distance oil and gas transportation. Pipeline steel pipes used in long-distance pipelines mainly include spiral submerged arc welded steel pipes and straight seam double-sided submerged arc welded steel pipes. Because the spiral submerged arc welded pipe is made of strip steel and its wall thickness is limited, the improvement of steel grade is limited by the heat treatment of the material. In addition, there are some insurmountable shortcomings of spiral submerged arc welded pipe, such as long weld, large residual stress and poor reliability of weld. With the increasing requirements for oil

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ANALYSIS ON THE DEVELOPMENT OF PIPELINE TRANSPORTA

Pipeline transportation is a long-distance transportation mode of liquid and gas substances using pipeline as a means of transportation. It is a special mode of transportation that transports petroleum, coal and chemical products from the place of origin to the market, and it is a special component of trunk transportation in the unified transportation network. Sometimes, pneumatic pipes can do similar work, and compressed gas is used to transport solid tanks filled with goods. Pipeline transportation of petroleum products is more expensive than water transportation, but it is still cheaper than railway transportation. Most pipelines are used by their

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HY NEWS INFORMATION 2023-1

Affected by various factors, it is expected that in 2023, China’s steel market demand will be strong internally and externally weak, the release pressure of steel production is still relatively large, and the price will continue to fluctuate in a wide range. There is no overwhelming unilateral tendency. It is estimated that there is a difference of about 1,000 RMB/Ton between the trough and the peak of the steel products price in the whole year, but the price center position may move up. According to data calculations, the national statistical output of crude steel in 2022 will drop by

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CURRENT SITUATION OF FLUID PIPELINE TRANSPORTATION

130 years ago, the emergence of pipeline transportation had a profound impact on the development of the world economy. In the history of world pipeline construction, China’s long-distance pipeline construction has experienced a long process of development. En 1958, the construction of the first long-distance pipeline Kedu Line entered a new development period. Up to now, China has built 395 long oil and gas pipelines, with a total length of 17000 kilometers. Pipeline transportation has played an important role in promoting the development of the national economy. In the 1990s, new breakthroughs were made in the construction of long-distance

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HOW TO PREVENT PORT DEFORMATION OF LARGE DIAMETER

With the development and progress of society, large-diameter straight seam steel pipe is widely used in many fields, such as oil and gas transportation. The end of large diameter straight seam steel pipe should be standard circular, but its shape will be affected by some factors, resulting in deformation. The deformed large-diameter straight seam steel pipe can not be used and installed normally, so how to avoid this situation? Próximo, manufacturers of large-diameter straight seam steel pipes will talk about: 1:First of all, it is necessary for manufacturers of large-diameter straight seam steel pipes to pay attention. When producing

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WHICH ELEMENTS IN STEEL PIPE PRODUCTION WILL AFFEC

According to the quality and performance of steel pipes, we have summarized the properties of different metal elements contained. Carbon: The higher the carbon content, the higher the hardness of the steel pipe, but the worse the plasticity and toughness. Sulfur: It is a harmful impurity in steel pipes. If the steel contains high sulfur content, it is easy to become brittle at high temperatures, which is usually called hot brittleness. Phosphorus: it can significantly reduce the plasticity and toughness of steel, especially at low temperatures. This phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus should

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HOW MUCH DO YOU KNOW ABOUT THE SIZE TERMS OF STEEL

Today, I want to discuss the technical terms of steel pipes with you. After reading this article, I believe that those who need steel pipes should know how to purchase them. The first is the steel pipe specification, which is the outer diameter multiplied by the wall thickness. For example, 325 times 10 represents that the outer diameter of the steel pipe is 325 mm and the wall thickness is 10 milímetro. Calculation formula of theoretical weight per meter: (outer diameter wall thickness) x wall thickness x 0.02466. The second is the wall thickness tolerance. In the production process,…

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