Company News

• 2025-09-26

  Pipe Elbow Meaning

  Elbow fittings are among the most commonly used fittings in today's construction. They are versatile and come in a variety of sizes and shapes. Steel pipe elbows are key components in piping systems that change the direction of fluid flow. They are used to connect two pipes of equal or different nominal diameters and to turn the pipe 45 or 90 degrees in a certain direction.

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• 2025-09-25

  Inspection Methods for Special-Shaped SMLS Pipes

  Special-shaped seamless steel pipes are a general term for cross-sectional shapes other than circular pipes and play a vital role in urban construction. Their quality directly impacts the sturdiness and quality of residential buildings. Production standards include ASTM A53, ASTM A106, ASTM A179, and ASTM A192. To select high-quality square pipes from the market, which can vary in quality, the first step is to learn how to distinguish inferior square pipes.

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• 2025-09-25

  How are stainless steel pipe elbows produced?

  Stainless steel pipe elbows are common fittings in piping systems, primarily serving to change flow direction and reduce stress concentration. They are widely used in industries such as petroleum, chemical, food, and pharmaceuticals, requiring high corrosion resistance, strength, and precision. Elbows can be produced in a variety of ways, including hot forming, stamping, extrusion, and welding.

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• 2025-09-24

  ASTM A252 Grade 2 Steel & Pipe Specification

  Based on the tensile strength and the yield strength the ASTM A252 is classified into three categories/grades: ASTM A252 Grade1/ ASTM A252 Grade2/ ASTM A252 Grade3, each standard has its own application scenarios, the most commonly used of which is the Grade2 standard.ASTM A252 is the standard specification for seamless and welded steel pipe used for steel pipe piles. Grade 2 is the intermediate grade of A252 with mechanical properties of 415 MPa tensile strength and 240 MPa yield strength, suitable for medium load construction conditions, commonly used for lighter loads and better soil conditions, such as small buildings, temporary structures, and landscaping projects.

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• 2025-09-23

  Common Stainless Steel Welded Pipe Standards

  Stainless steel welded pipe is a critical pipe material used in the petroleum, chemical, construction, machinery manufacturing, and energy industries. Its quality and performance are directly related to the safety and reliability of projects. To ensure product consistency and interchangeability, international and domestic organizations have developed a series of stainless steel welded pipe standards. These standards cover not only chemical composition, mechanical properties, and dimensional deviations, but also surface quality, welding processes, and inspection methods. The following describes common stainless steel welded pipe standards and their key features.

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• 2025-09-22

  How to Choose the Right Schedule 40 Carbon Steel Pipe Manufacturer

  Choosing the right Schedule 40 carbon steel pipe manufacturer is a critical decision. The quality of the pipe impacts safety, efficiency, and cost. With many suppliers in the market, it is important to know the key factors that define reliability.

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• 2025-09-19

  JCOE LSAW Steel Pipe Forming Process

  The JCOE straight seam steel pipe manufacturing process is a new welded steel pipe forming technology that emerged in the 1990s. The main forming process involves milling (or planing) the pre-welded steel plate joints, then pre-bending the steel plate widthwise. The forming process then proceeds in a sequential order of J, C, and O. The forming process involves multiple presses, each using a three-point bending die. Because the raw steel plate used for straight seam steel pipes is formed using multiple progressive die presses, the following basic issues must be addressed:

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• 2025-09-18

  EN 10219 Welding Requirements and Test Standards

  EN 10219 is the most authoritative European standard for cold-formed welded structural hollow sections. Its stringent regulations for cold-formed welded structural hollow sections are crucial for ensuring the quality and safe use of steel pipes. A thorough understanding of these requirements is crucial for steel pipe manufacturers, purchasers, and related engineering professionals.

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• 2025-09-17

  SSAW Steel Pipe Production Process

  Spiral welded pipe is the leader among welded pipes. The spiral welded pipe manufacturing process is not only one of the most efficient methods for producing steel pipe, but also offers a high degree of flexibility within the production range of diameters and wall thicknesses. This is why spiral welded pipe production began in areas where other welded pipe production processes were limited—whether producing transmission pipe, water pipe (AWWA), or oil and gas pipe (API).

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• 2025-09-17

  Grades and Standards of Seamless High-Pressure Boiler Tubes

  Against the backdrop of my country's rapid economic growth, the electric power industry, as a foundational industry, has experienced rapid development. Electricity is not only a source of power for industrial production but also a vital guarantee for people's daily lives. With increasing energy demand and the widespread construction of thermal power plants, the demand for high-pressure boiler tubes has steadily increased. As a key component of power plant boilers, seamless high-pressure boiler tubes play an irreplaceable role in energy equipment manufacturing.

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• 2025-09-16

  Surface rust removal treatment of SSAW steel pipe

  With the continued economic growth of my country, the country is vigorously developing the energy industry. Long-distance oil and gas pipelines are a crucial means of energy security. During the corrosion protection construction of oil and gas pipelines, the surface treatment of spiral steel pipe is a key factor in determining the service life of the pipeline's corrosion protection. It is a prerequisite for the strong bond between the anti-corrosion coating and the steel pipe. Research institutions have verified that in addition to factors such as the coating type, coating quality, and construction environment, the surface treatment of the steel pipe accounts for approximately 50% of the life of the anti-corrosion coating. Therefore, the surface treatment methods for spiral steel pipes should be strictly adhered to the requirements of the anti-corrosion coating specification for steel pipe surfaces, and continuous research, analysis, and improvement should be made.

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• 2025-09-15

  Process Characteristics of Thermal Expansion for SMLS pipe

  Thermal expansion treatments for seamless steel pipes are categorized into overall thermal expansion, surface thermal expansion, and chemical heat treatment. Thermal expansion treatment for seamless steel pipes generally utilizes overall thermal expansion. These treatments typically involve heating, holding, and cooling, all of which can potentially result in defects.

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