Company News

• 2024-05-27

  Stainless Steel Pipe Welding Methods (TIG vs MIG vs HFW)

  With the rapid development of global industry, stainless welded steel pipes are widely used in petroleum, chemical industry, food processing, pharmaceuticals, construction and other fields due to their excellent corrosion resistance, high strength and aesthetics. Welding is a key link in the production of stainless steel welded pipes, and its technical level directly affects the quality and application performance of welded pipes. The main welding methods of stainless welded steel pipes include gas tungsten arc welding (GTAW/TIG welding), gas shielded metal arc welding (GMAW/MIG welding), high frequency resistance welding (HFW), laser welding, plasma arc welding (PAW), etc. Method, this article will introduce in detail the main welding methods of stainless welded steel pipes and their technical prospects.

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• 2024-05-27

  How to choose the right steel pile pipes?

  In modern infrastructure construction, steel pile pipes, as a key basic material, are widely used in bridges, ports, roads, high-rise buildings and other projects due to their high strength, durability and adaptability. Choosing the appropriate size and type of steel pile pipe can not only ensure the stability and safety of the project, but also effectively control construction costs and improve construction efficiency. This article will discuss in detail the main sizes, types and selection principles of steel pile pipes to help engineers and decision-makers make more informed choices.

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• 2024-05-24

  How to prevent corrosion of slotted casing?

  In recent years, the application of slotted casing in sand control technology for oil and gas wells has achieved remarkable success and has become the preferred solution for many oil fields. The excellent sand control effect and low cost make slotted casing widely used in sand control operations in oil wells. However, after long-term use, grooved casing will face complex corrosion problems in the underground environment. These problems seriously affect its service life and sand control effect. To this end, the industry continues to explore and improve the anti-corrosion technology of slotted casing to improve its corrosion resistance and ensure long-term stable production of oil and gas wells.

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• 2024-05-24

  Causes of drill collar breakage

  In recent years, drill collar fractures have occurred frequently during oil drilling, which has attracted great attention in the industry. As an important part of the drill string, the drill collar is located at the lower part of the drill string and is connected to the drill pipe and directly connected to the drill bit. The drill collar plays an overall weighting role to prevent backlash. The inner diameter of the drill collar is smaller than the drill pipe, and its weight is larger than the drill pipe. It not only undertakes the important function of transmitting torque, but also enables the drill bit to penetrate into the formation smoothly through the stroke weight on bit. In complex and harsh environments, drill collars are subject to the dual effects of stress corrosion and alternating bending fatigue stress. These factors often lead to their failure and damage. In order to improve the safety and efficiency of oil drilling, the industry has conducted in-depth research and improvements on the manufacturing process and material properties of drill collars.

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• 2024-05-23

  What are the main functions of casing and tubing?

  In the process of oil drilling and production, oil casing and tubing are two key pipe materials. They play an important role in ensuring the safety, stability and efficient production of oil wells. As the petroleum industry continues to develop, tubing and casing technology continues to advance, driving innovation and progress throughout the industry. The international standard for casing and tubing is API 5CT.

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• 2024-05-23

  How do pup joints work?

  Pup joints are a key component in the oil and natural gas extraction industry. Its industry definition and industry chain composition are crucial to a deep understanding of the operating mechanism and future development direction of this market. As a special pipeline connector, Pup joints are mainly used to connect and support oil pipes in the oil and gas extraction process to ensure smooth flow of fluids under high pressure and complex geological environments. Its importance is not only reflected in maintaining fluid continuity but also related to the safety and efficiency of the entire mining process. As various countries attach importance to the energy industry, especially the field of oil extraction, how to ensure the stability and safety of process equipment and pipeline systems during operation has become an urgent problem to be solved. As one of the key components, casing plays an important role in protecting wellhead equipment and maintaining formation stability. The most common and effective form of threaded connection technology-pup joints.

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• 2024-05-22

  How to prevent corrosion of SSAW steel pipes?

  SSAW steel pipe production process is simple, production efficiency is high, cost is low, and development is rapid. The strength of SSAW steel pipes is generally higher than that of LSAW steel pipes. Welded pipes with larger diameters can be produced from narrower billets, and welded pipes with different diameters can also be produced from scrap materials of the same width. However, compared with LSAW steel pipes of the same length, the weld length is increased by 30~100%, and the monthly production speed is lower. In order to extend the service life of most SSAW steel pipes, anti-corrosion treatment is necessary. In daily care work, it is not only necessary to perform surface anti-corrosion treatment on SSAW steel pipes, but it is also very important to learn how to avoid wear and tear during daily installation and use of SSAW steel pipes. This is related to some safety issues in the entire pipeline line, and also avoids the trouble of frequent maintenance in daily work.

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• 2024-05-22

  What is the manufacturing process of drill pipe?

  Drill pipe is a hollow thick-walled steel pipe used for drilling. It can transmit vertical force and torque. It is widely used in various types of oil drilling, such as directional wells, horizontal wells, etc. The lower part of the drill collar is connected to the drill bit, and the upper part is connected to the drill pipe. The drill pipe mainly transmits motion and power, and the drill collar directly drives the drill bit to work.

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• 2024-05-21

  Advantages of Laser Cutting Slotted Casing

  Slotted casing is an important completion equipment in oil drilling operations and is often used for early completion and oil production sand control in oil fields. The main machine and equipment for slotting casing is a cutting machine. Generally, a slotting casing manufacturer has at least ten cutting machines. The material of slotted casing is mainly petroleum casing and tubing, which is basically used as the raw material for making slotted casing. The development of modern science and technology, through process exploration and scientific research, has gradually solved the technical problems of laser processing of grooved casing such as ultra-fine seams, trapezoidal seams, and wide seams (seam width >1mm). The developed laser processing machine tool for grooved casing has achieved mass production of slotted casings.

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• 2024-05-21

  LSAW Steel Pipe Manufacturing Process Explained

  LSAW steel pipe (Longitudinally Submerged ArcWelding) is a professional term for straight seam submerged arc welded steel pipe, also known as straight seam submerged arc welded pipe, which is a kind of steel pipe. It uses a single medium-thick plate as raw material, presses (rolls) the steel plate into a tube in a mold or forming machine, and then uses double-sided buried fox welding and enlarging the diameter for production. Submerged arc welding (including submerged arc surfacing and electroslag surfacing, etc.) is a method in which the arc burns under the flux layer for welding. Its inherent advantages include stable welding quality, high welding productivity, no arc light, and little smoke and dust. It has become the main welding method in the production of many important steel structures.

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• 2024-05-20

  Analysis of the causes of screen casing damage

  With the development of petroleum industry, screen casing play a vital role in the process of oil exploitation and production. However, the frequent occurrence of oil screen casing damage recently has aroused widespread concern. Due to many factors such as wellbore, pipe string, sand control tools, ground environment and personnel's technical quality, screen casing annulus filling often fails in the construction process. In order to better understand the causes of oil screen casing damage, we have carried out in-depth investigation and analysis.

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• 2024-05-20

  Development of ERW steel pipe

  High frequency straight seam resistance welded steel pipe (ERW) is a hot rolled coil formed by the forming machine, using the skin effect and proximity effect of high frequency current, the bad edge of the pipe is heated and melted, and the pressure welding is carried out under the action of the extrusion roll to achieve production. At present, in the production of welded steel pipes in the world, ERW welded pipe production accounts for about 80% of the total output of welded pipes.

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